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Contents Preview The PBC Method - hyperons and K 0 S -mesons production (  + ) spectra

P.Zh.Aslanyan . J OINT INSTITUTE FOR NUCLEAR RESEARCH , YEREVAN STATE OF UNIVERSITY. Exotic strange multibaryon states searches with - hyperon and K 0 s -meson systems in p+A collisions at momentum 10 Gev/c. Contents Preview The PBC Method - hyperons and K 0 S -mesons production

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Contents Preview The PBC Method - hyperons and K 0 S -mesons production (  + ) spectra

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  1. P.Zh.Aslanyan .JOINT INSTITUTE FOR NUCLEAR RESEARCH, YEREVAN STATE OF UNIVERSITY . Exotic strange multibaryon states searches with-hyperon and K0s -meson systems in p+A collisionsat momentum 10 Gev/c Contents • Preview • The PBC Method • - hyperons and K0S-mesons production • (+) spectra • (-) spectra • (p) spectra • (p p) spectra • S=-2 H dibaryon searches • (K0s ,p) spectra • (K0s, )spectra • (K0s ,) spectra • conclusion HS07, Bratislava, 5September, 2007

  2. Preview There are a few actual problems of nuclear and particle physics which are concerning with this report. These are following goals:in-medium modification of hadrons, the origin of hadron masses, the restoration of chiral symmetry, the confinement of quarks in hadrons, the structure of neutron stars .Multi-quark states, glueballs and hybrids have been searched for experimentally for a very long time, but none is established. Exotic strange multibaryon states has been identified by using 700000 stereo photographs or 106 inelastic experimental events from 2-m propane bubble chamber JINR exposed proton beams at 10 GeV/c. Strange multi-baryonic clusters are an exiting possibility to explore the properties of cold dense baryonic matter and non-perturbative QCD. A survey for new experiments with much improved statistics compared to those early data would hopefully resolve whether such "exotic“ multi-quark hadron and baryon resonances exist. There are not sufficient experimental data concerning strange-hyperons production in hadron -nucleus and nucleus-nucleus collisions over 4-50 GeV/c momentaranges.

  3. The PBC method A reliable identification of the above mentioned resonance needs to use 4-detectors and highprecision measurements of the sought objects. The bubble chamber is the most suitable instrument for this purpose . The full experimental information of more than 700000 stereo photographsor 106 events from p+propane inelastic interactions are used to select the events with V0 strange particles . The GEOFIT based on the Grind-CERN program is used to measure the kinematics parameter of tracks momenta(P), tg( - depth angle) and azimuthal angle() in the photographs. The relative error of measuring momentum p and the average track length L of charged particles are found to be P/P=2.1%,< L>=12 cm for stopped particles and P/P>=9.8 %, <L>= 36 cm for nonstopped particles. The mean values of measurement errors for the depth and azimuthal angles are equal to tg = 0.0099 ± 0.0002 and  = 0.0052 ± 0.0001 (rad.). The estimation of ionization, the peculiarities of the end track points of the stopped particles(protons, K ) allowed one to identify them. Protons can be identified over the following momentum range: 0.150 P 0.900 GeV/c. In the momentum range P > 0.900 GeV/c protons couldn't be separated from other particles.

  4. - hyperons and K0S-mesons production Proc.International Conference on LOW ENERGY ANTIPROTON PHYSICS ,May16-22, Bonn - Julich, Germany, 2005; AIP,v. 796, p.195, ISBN 0-7354-0284-1,Melville, NY. hep-ex/0504026,2005..P.Z. Aslanian ,The XIth International Conference on Elastic and Diffractive Scattering, May 16-20, Blois, France, 2005. XVIII Baldin ISHEPP, Dubna,September 25-30, 2006. Spin’06, October 2-7, Kyoto, Japan 2006. Internationale Universitдtswochen fur Theoretische Physik,Schladming, Austria, February 26, 2007. "Particles and Nuclei, Letters“,2007. Figures (a,c) and (b,d) show the effective mass distribution of 8657-events with , 4122-events with Ks0 particles and their 2 from kinematic fits, respectively. The expected functional form for 2 is depicted with the dotted histogram. The measured masses of these events have the following Gaussian distribution parameters MK= 497.7± 3.6, s.d.= 23.9 MeV/c2 and M  =1117.0 ± 0.6, s.d.=10.0 MeV/c2. The masses of the observed , Ks0 are consistent with their PDG values. The experimental inclusve cross sections are equal to 13.3 and 4.6 mb for  and Ks0 production in the p+C collisions at 10 GeV/c.

  5. Figure compares the momentum, cos in the c.m. nucleon-nucleon system, transverse momentum(pt) and longitudinal rapidity distributions of  and K0s for experimental events (solid line) and those simulated by the FRITIOF model (broken line)in p+C interactions. From Fig. one can see that the experiment is satisfactorily described by the FRITIOF model.

  6. / +- ratio The experimental data from heavy ion collisions show in figure that the K+ / +ratio is larger at BNL-AGS energies than at the highest CERN-SPS energies and even at RHIC. This behavior is of particular interest as it could signal the appearance of new dynamics for strangeness production in high energy collisions. If the hadronic rescattering mechanism dominates strangeness enhancement at 10 A GeV, how rapidly does this reduce as the beam energy is increased . Strangeness enhancement has been extensively discussed as a possible signature for the quark-gluon plasma (QGP) [1,2]. Strange particle production has also been analyzed regarding such reactionmechanisms as the multinucleon effect [3], the fireball effect [4], or as the deconfiment signal, within the context of thermal equilibrium of hadron statistical model [5,6,7,8]. The statistical approach has been very successful in describing particle yields from low energies starting with SIS and AGS all the way up to SPS (see figure). In particular, strange particles have been observed extensively on hadron - nucleus and nucleus-nucleus collisions 4-15 Gev regions [9-14]. Experiments on Si+Au and Au+Au collisions at 11.6 and 14.6 A GeV/c(AGS) a K+ /  +ratio in heavy-ion reactions was measured which is four to five times larger than the K+ /  + ratio in p+p reactions at the same energy[13,14].

  7. The number of-s produced in antiproton +Ta reaction at 4 GeV/c was 11.3 times larger than that expected from the geometrical cross section (KEK, Japan) [9]. The strange hyperon yields [6 ,9, 10, 11] are therefore of great interest as an indicator of strange-quark production(see in figure). Figure shows the energy dependence of the  /+, - / + and the - / +. As can be seen from the figure there is a very clearly pronounced maximum especially in the  / + ratio. However, there have not been sufficient experimental data concerning strange-hyperon production over 4-50 GeV/c momentum range in nucleus-nucleus collissions. Themultiplicityof  and + production in C+C reaction at 10 GeV/c have been used the Glauber approach based on the experimental cross section for p+C X from this experiment [14]. / + ratios in p+C interactions are equal to 5.3*10-2and 2.6 * 10-2 at beam momentum 10 GeV/c and 4.2 GeV/c, respecctively . This experiment is shown that there is not a significant enhancement of the cross section for pCK0s X. Therefore the enhancement of  production is obtained from pCK+X reaction that it is means the enhancement of K+ production too. The  /+ ratio from this experiment in pC reaction is approximately two times larger than ratios at the same energies for pp reaction and for same reaction, which was simulated by FRITIOF model. Figure : Prediction of the statistical-thermal model[5,6] for  /+ note the factor 5, solid line ), and-/+(dashed line) and ­/ + ratios a function of s. For compilation of AGS data see [7]. The  /  + ratio in interaction C+C was obtained by using data from this experiment for pC  X. [1]J.Rafaelski et al., PL. 91B,281,1980; PRL 48, 066,1982. [2] P.Koch et. al., PL 123B,151.1983. [3] J.Rundrup and C.M.Ko, Nucl.Phys. A343, 519, 1980. [4] F.Asai, H.Sato and M.Sano, Phys. Lett. 98B, 19, 1981. [5] J. Cleymans and K.Redlich, Phys.Rev. C60(1999). [6] P. Braun-Munzinger et al.,NPA697:902-912,2002; hep-ph/0106066,2001. [7] F. Becattini et al, PR C24,024901,2001. [8] M. Gazdzicki, hep-ph/0305176v2,2003. [9] K. Miyano et al., Phys. Rev. C38 (1988). [10] M. Anikina et al., Phys. Rev. Lett. 50 (1971). [11] S. Albergo,et. al.,Phys. Rev. Lett. 88,v.6, 2002. [12] B. Back et al.,E866, E917 Collab., nucl-ex/9910008 [13]J. C. Dunlop and C. A. Ogilvie, Phys. REV. C, VOLUME 61,031901(R),2000; [14] P.Z. Aslanian et. al., JINR comm., E1-2005-149, 2005. "Particles and Nuclei, Letters".

  8. (+ )spectra Test method with known resonance. The resonance with similar decay properties*(1382) registered. Decay width is equal to  40 MeV/c2. M/M0.7 % in range of *(1382)invariant mass. Masses and widths consistent with PDG values. The cross section of *(1385) production (540 simulated events) can estimated by FRITIOF model which is equal to 1.0 mb (540 simulated events) at 10 GeV/c for p+C interaction.

  9. Preliminary new results for (- )spectra The - effective mass distribution for all 4940 combinations with scales 18 and 12 MeV/c2. The solid curve(Fig.a) is the sum of the background (by the first method ) and 1 Breit-Wigner resonance. There is significant enhancement In the mass range 1372 MeV/c2 with S.D.= 11.3, =93MeV/c2. The cross section of *-(1385) production (680 events) is equal to 1.3 mb at 10 GeV/c for p+C interaction. Broadening of width for -(1385)2 times larger the than PDG valuehave observed. Figure (b) shows effective mass distribution with scale of 12 MeV/c2, where there are also significant enhancements in mass regions of 1345(3.0 S.D.) and 1480(3.2). There are negligible l enhancements in mass regions of 1410, 1520 and 1600MeV/c2.

  10. Preliminary new results for (- )spectra The cross section of - production (60 events) stopped in nuclear medium is equal to 15 b at 10 GeV/c for p+propane interaction. Expected number events with - is equal 8 events(w=1/e =5.3). We observed that the experimental production of - 7-8 times larger than the number of events with - similarlysimulated by fritiof model. Figures shows that *-(1480) resonance observed too which is agreed with SVD result.

  11. (p) spectra Preview • The first evidence for Quantum Chromodynamics (QCD), the theory of the strong interactions, came from the systematics of baryon and meson spectroscopy. Already back in 1977 Jaffe, using the bag model in which confined colored quarks and gluons interact as in perturbative QCD, suggested the existence of a light nonet composed of four quarks mesons, five quark baryons, six quarks dibaryons et.al.. • A phenomenological model is proposed for the analysis of the properties of theKaonic Nuclear Cluster (KNC) K−pp in its ground state. For the first time the KNC 2KH has been investigated by Akaishi and Yamazaki within the PotentialModel (PM) approach. Veryrecently, possible existence of discrete nuclear bound states of Kp has been predictedbased on the experimental information on the KN scattering lengths, kaonic hydrogen atom and the (1405) resonance. In this model the pp pair inside the KNC2KH is in the 1S0 state and the K−p pairs are inthe S –wave states. Thus, the p pair, produced in the reaction K−(pp)1S0 → p, is inthe 3P0 state.

  12. ( ,p) spectra from neutron exposure on PBC The problem of experimental examination of multibaryon strange resonances was started at JINR, LHE from 1962 up to now. The effective mass spectra of 17 strange multiquark systems were studied for neutron exposure nC X at average momentum 7.0 GeV/c, and this group succeeded in finding resonance-like peaks [1-3] only in five of them  p, p ,  ,  p,    . These data obtained with very small statistic and has been improved by using data from p+ propane interaction. Results[4] in pC collision at 10 GeV/c show that the obtained peaks in reports [1-3] has been confirmed. B.A. Shahbazian et al., Nucl. Physics, A374(1982),p. 73c-93.c.2) B.A. Shahbazian ,JINR Commun., E1-82-446,1982, International Conference on Hypernuclear and Kaon Physics, Heidelberg, 1982.3) B.A. Shakhbazian et al., (Dubna, JINR). JINR-D1-81-107, 1981. 4. Most significant evidence for  p spectrum with mass of 2223 and 2263 MeV/c2 was included in the Review of Particle Properties( Phys.Lett.170B(1986)).

  13. (,p)spectra in p+propane collision at 10 GeV/c P.Z. Aslanyan et al.,Proc. “I.Y. POMERANCHUK AND PHYSICS AT THE TURN OF CENTURIES Moscow, January 24–28, 2003. Proc.International Conference on LOW ENERGY ANTIPROTON PHYSICS ,May16-22, Bonn - Julich, Germany, 2005; AIP,v. 796, p.195, ISBN 0-7354-0284-1,Melville, NY. hep-ex/0504026,2005..P.Z. Aslanian ,The XIth International Conference on Elastic and Diffractive Scattering, May 16-20, Blois, France, 2005. XVIII Baldin ISHEPP, Dubna, September 25-30, 2006. Spin’06, October 2-7, Kyoto, Japan 2006. Internationale Universitдtswochen fur Theoretische Physik,Schladming, Austria, February 26, 2007 The total experimental background has been obtained by three methods. In the first method, the experimental effective mass distribution was approximated by the polynomial function after cutting out the resonance ranges because this procedure has to provide the fit with 2=1 and polynomial coefficient with errors less than 10 %. The second of the randomly mixing method of the angle between proton and  for experimental events is described in JINR Rapid Comm., N6(74),p209, 1995. Then, these background events were analyzed by using the same experimental condition and the effective mass distribution was fitted by the polynomial function. The analysis done by two methods has shown that while fitting these distributions had the same coefficients( with 30 % errors) and order of polynomial. The third background method has been obtained by using FRITIOF model with experimental canditions (FRITIOF, H. Pi, Comput. Phys.Commun. 71,173, 1992). The values for the mean position of the peak andthe width obtained by using Breit Wigner fits . The statistical significance for the fit on Fig. inside a mass window is calculated as NP /(NB)1/2, where NB is the number of counts in the background fit under the peak and NP is the number of counts in the peak.

  14. . The p effective mass distribution for 2434 combinations for identified protons with a momentum of 0.300 P  0.900 GeV/c and np=1,2 is shown inFigure. The solid curve is the sum of the background by the first method and 4 Breit-Wigner resonances . There are significant enhancements in mass regions of 2100, 2180, 2280 and 2353 MeV/c2 (Table,Fig.). Theirexcess above background by the second method is 6.9, 4.9, 3.8 and 2.9 S.D., respectively. There is small peak in the mass region of 2225 MeV/c2. These peaks are agreed with experimental data from PBC in neutron exposure. The peaks are agreed with experimental data from FOPI,FINUDA and OBELIX collaboration which was recently obtained. M, MeV/c2, MeV/c2S.D. 2100 14. 6.9 2180 5. 4.9 2225 - 3.1 2280 16. 3.8 2363 - 2.9

  15. Preliminary new result for (,p)spectrum with stopped protons

  16. (,p)spectrawith relativistic protons The p effective mass distribution for 2025 combinations withrelativistic protons over a momentum of P >1.65 GeV/c is shown inFigure. The solid curve is the 6-order polynomial function( 2/n.d.f=205/73). Backgrounds for analysis of the experimental data are based on FRITIOF and the polynomial method. There are significant enhancements in mass regions of 2155(2.6 S.D.), 2225(4.7 S.D., with =23 MeV/c2), 2280(4.2 S.D.), 2363(3.6 S.D.) and 2650MeV/c2(3.7 S.D.). These peaks with protons in relativistic momentum range and with identified protons in a momentum of 0.300 P  0.900 GeV/c are agreed

  17. Talkfrom FOPI,by N. Hermann, on BARYON07, Seul.

  18. Invariant mass K-pp --> + p a significant peak(6 S.D.) atM ~ 2220 MeV/c2 BK ~ 120 MeV CF2007, Dubna, June-19-2007 Toshimitsu Yamazaki RIKEN Aslanyan et al. DUBNAPropane bubble chamberp+p, p+12C, n+p, n+12C

  19. (,p,p)spectrum in p+propane collision at 10 GeV/c XVIII Baldin ISHEPP, Dubna,September 25-30, 2006. Spin’06, October 2-7, Kyoto, Japan 2006 proton data neutron data Recentry, E471 experiment have discovered two kinds of strange tribaryons by measuring nucleonenergy spectra from the stopped K−reaction on 4He [1] (KEK PS), which was motivated by theprediction of a deeply bound K−ppn state by Akaishi and Yamazaki [2]. The first kind,S0(3115), was discovered in(K− − 4He)atomic S0(3115) + p (1) reaction [3]. The observed state has isospin T = 1, charge Z = 0 and mass MS0 = 3118MeV/c2. The second kind, S+(3140), was indicated from(K− − 4He)atomic S+(3140) + n (2)reaction [4] originally proposed to search for the K−ppn state, which was predicted to beat M = 3194 MeV/c2 with T = 0 and Z = 1 [2].

  20. Talkfrom FOPIby N. Hermann, on BARYON07, Seul.

  21. The pp effective mass distribution for 3401 combinations for identified protons with a momentum of P <0.9 GeV/c is shown inFigure. The solid curve is the 6-order polynomial function( 2/n.d.f=245/58, Fig.a ). The backgrounds for analysis of the experimental data are based on FRITIOF and the polynomial method. There is significant enhancements in mass regions of 3138(6.1 S.D.). There are small enhancements in mass regions of 3087(2.2 S.D.), 3199(3.3 S.D.), and 3320(4.1 S.D),3440(3.9 S.D) and 3652MeV/c2(2.6 S.D.). These peaks in ranges of 3138 and 3199MeV/c2 were agreed with registered peaks: from reports[3-4] of E471 experiment, PS,KEK, from experiments FOPI and OBELIX. 1. M. Iwasaki et al., Nucl. Instrum. Meth. A 473 (2001) 286.2. Y. Akaishi and T. Yamazaki, Phys. Rev. C 65 (2002) 044005.3. T. Suzuki et al., Phys. Lett. B 597 (2004) 263.4. M. Iwasaki et al., nucl-ex/0310018, submitted to Phys. Lett. B.

  22. Present Status ofExperimental Investigation of Deeply Bound Kaonic States T. Yamazaki and Y. Akaishi ECT*, Trento, June 22, 2006

  23. S=-2 H dibaryon searches The H-dibaryon is a spin and isospin singlet, the spin- flavor symmetric and positive parity state composed of six quarks (uuddss). The H-dibaryon may exist in another environment e.g. in a double hypernucleus or in some special astrophysical objects. There have been reported a few events for H dibaryons and double hypernuclei in BNL,KEK,JINR, CERN, FNAL et al.( the Table from Ts. Sakai et.al.,Osaka U.,nucl-th/9912063, Dec. 1999. ). Many projects for double hypernucleus hunting are going on...

  24. H dibaryon states in p+propane collision at 10 GeV/c P.Z. Aslanyan, JINR Commun.,E-2001-265,2002 . NuclearPhysics B 5B(1999)63-65 The weak decay channels searches for stable S=-2 dibaryon states is being continued to date. A few events, detected on the photographs of the propane bubble chamber exposed to a 10 GeV/c proton beam, were interpreted as light and heavy H dibaryons which are presented in Table.

  25. New observation of heavy S=-2, positive H+ dibaryons from weak decay channel of H+(2482)K-pp on PBC XVIII Baldin ISHEPP, Dubna,September 25-30, 2006. Spin’06, October 2-7, Kyoto, Japan 2006. The positive secondary track is produced from the beam range. The appearance of its first part, 15.8 cm long, with a momentum of pH+ =1.2 0.12GeV/c and average relative ionization more than I/I0>2 . This ionization allows one to select only two H+ or deuteron hypotheses which can imitate this track. The second part is due to two stopped protons. The negative K- momentum is equal to 0.560.03 eV/c(I/I0 1.5 ) . K- H+ p p The kinematic threshold does not permit (s=1.96 GeV/c) imitating the reaction with deuteron including fermi motion. The H+ K-pp hypothesis fits the event with 2(1V-3C)=2.6, C.L.= 28 %, and MH+=248248 MeV/c2. There is also fits by hypothesis with channel H+-+p which have much less probability than above hypothesis..

  26. (Ks0p)- spectra [1] D. Diakonov, V. Petrov, and M. Polyakov, Z. Phys. A 359 (1997) 305. [2] V.Guzey and M.Polyakov, arXiv hep-ph/0501010,2005. Θ(1540)+ was included in the Review of Particle Properties.Citation: W.-M. Yao et al. (Particle Data Group), J. Phys. G 33, 1 (2006) (URL: http://pdg.lbl.gov) • Exotic: S= +1 • Results from a wide range of recent experiments are consistent the +(1540) with a narrow width and a mass near1540 MeV [1]. • Narrow width: < 15 MeV • Results from this experiment • (cited 100): • M + = (15408) MeV/c2, •  + =(9.2 1.8) MeV/c2. • PDG-04: •  + =(9.2 0.3)MeV/c2. Meson（ qq ） Baryon（q q q）

  27. Study of narrow baryon resonance decaying into pK0s in p-A interactions at 70 GeV/c with SVD-2A.Kubarovsky, V.Popov, V.Volkov (SINP MSU) from SVD Collaboration (SINP MSU,IHEP(Protvino),JINR (Dubna) ) • SVD observes in two independent samples a signal in pK0s with M=(15232 3) MeV/c2, <14 MeV/c2, Sign.  8,*BR(K0p)  6 b for Xf>0. • Xf peaks at zero with <|Xf|>  0.1 (agrees qualitatively to Regge-based model). • Agrees to ZEUS, HERMES, ToF results. • No direct contradiction to null results of WA89, HyperCP, HERA-B, SPHINX (mainly due to different acceptances at Xf 0). • (1480) resonance observed in small Xf region • Higher statistics is needed. SVD expects to collect 10 times more in 2007. ICHEP’06, Moscow, 29.07.2006

  28. Ks0p - spectrum, PBC data at 10 GeV/c P.Aslanyan et al., JINR, E1-2004-137,2004; Nuclear Physics A 755, 375, (2005). The Ks0p invariant mass distribution with a momentum Pp1.7 GeV/c (3500 combinations) is shown in Figure. The histogram is approximated by a polynomial background curve and by 5 resonance curves taken in the Breit-Wigner form. The dashed curve is the background taken in the form of a superposition of Legendre polynomials up to the 6 -th degree, inclusive. The Ks0p effective mass distribution for identified protons with a momentum of 0.350 P  0.900 GeV/c is shown in Figure. The solid curve is the sum of the background and 4 Breit-Wigner resonance curves The cross section is equal to 90 b for p+propane reaction.

  29. (K0s ) -spectra P.Z. Aslanyan et al., Proc.International Conference on LOW ENERGY ANTIPROTON PHYSICS ,May16-22, Bonn - Julich, Germany, 2005; AIP,v. 796,ISBN 0-7354-0284-1. JINR comm., E1-2005-149, 2005. "Particles and Nuclei, Letters“,2006.

  30. Ks0 - spectra analysis, at 10 GeV/c on PBC The Ks0 effective mass distribution for 1012 combinations is shown inFigure. The solid curve is the sum of the background by the first method and Breit-Wigner resonances . Similar results have obtained when using a Breit Wigner distribution and diferent binsizes. There are significant enhancements in mass regions of 1750 and 1795 MeV/c2 (Fig.). There are small peaks in the mass regions of (1650- 1700),(1830-1860) and (1925 -1950) MeV/c2 . The cross section is equal to 30 b for p+propane reaction.

  31. These peaks are possible candidates for two pentaquark states: the N0 with quark content udsds decaying into K0 and the 0 quark content udssd decaying into ( K0 ), which are agreed: with the calculated rotational spectra N0 and0 spectra from the theoretical report of D. Akers, arXiv.org:hep-ex/0310014, 2004 (below figure) and with + spectra from the experimental report of P. Aslanyan JINR, E1-2004-137,2004 .

  32. (K0s ,) spectra Talks: XVIII Baldin ISHEPP, Dubna, September 25-30, 2006. Spin’06, October 2-7, Kyoto, Japan2006. The scalar mesons have vacuum quantum numbers and are crucial for a full understanding of the symmetry breaking mechanisms in QCD, and presumably also for confinement. Suggestions that the  (600) and (800) could be glueballs have been made. There are theoretical arguments for why a light and broad (800)(qq or 4-quark state) pole can exist near the K threshold and many phenomenological papers support its existence . The (600) and (800) indeed belong to the same family as the f0(980) and a0(980) mesons (say if the  (600) were composed of 2 or 4 u and d type quarks) then no such mechanism would suppress the decay 0(600)+- or (800) K. The PDG numerous determinations of the pole mass in the neighborhood of 600 MeV. There is believe that experimental groups should look for pole positions in their data analysis, which also include the aforementioned nonlinear effects from S-wave thresholds. The E791 Collaboration reported a light  with mass 797 MeV and width 410 MeV, but uses a Breit–Wigner amplitude . This claim was, however, not confirmed by the CLEO Collaboration. A lighter and very broad  pole is nonetheless possible and should be looked for in future data analyzes. “

  33. Bockmann et al.,Nuclear Physics ,V. B166(1980), No.2. The present data come from exposure of the CERN 2 m hydrogen bubble chamber to + and p beams. The investigation is based on totals of apporximately 330000 + p events at 16 GeV/c and 280000(400000) for pp events at 12(24) GeV/c. Effective mass distribution for K0s+ and K0s- inpp interactions at 12 , 24 GeV/c and -p interactions at 16 GeV/c. The curves represent the fits with the background dashed below K*(892) signals.There are negligible peaks in mass ranges of 720 and 800 Mev/c2. Particles andNuclei, Letters”[114],2002 .The effective mass distribution of +- -combinations from the total statistics of the reactionnp +- at Pn = 5.20 GeV c .The dotted curve is the background taken in the form of a superposition of Legendre polynomials up tothe 10-th degree, inclusive. The effective mass distribution of +- –combinations from total statistics of the reaction np +- at Pn=5.2 GeV/c(JINR HPC). The distribution is approximated by a polynomial background curve and by 3 resonance curves taken in the Breit-Wigner form Fig.. At least 3 states with quantum numbers of 0 –meson 0+(0{++}) have been found at masses of 418, 511 and 757 MeV/c2. The fact low -mass 0-mesons are glueballs is one of the possible interpretations.

  34. The effective mass distribution of K0s+ -combinations from the total statistics of the reactionpA.The solid curve is the background taken in the form of a polynomials up tothe 8-th degree. The dashed histogram is the background by FRTIOF. The invariant mass has significant enhancement in range of 890 Mev/c2(from PDG). There are peaks in mass ranges of 720(4.6), 800(4.2) and 1060(7.3) Mev/c2.

  35. The solid curveis the sum of 2BW and background (black) taken in the form of a superposition of polynomial up tothe 6-th degree. The dashed curve(red) is the background by polynomial without mass range of 0.75< MK <0.98 MeV/c2 when a 1BW function was used.

  36. K0s- - spectra The effective mass distribution of K0s- -combinations from the total statistics of the reactionpA at Pp= 10GeV/ c .The solid curve is the background taken in the form of a superposition of polynomials up tothe 6-th degree, inclusive. The dashed histogram is the background by FRTIOF.The invariant mass has significant enhancement in range of 890 Mev/c2(K*(892) PDG). There are peaks in mass ranges of 730 and 780 Mev/c2. in Figure(a) the effective mass distribution presented with large scale (33 MeV/c2). In this case there are significant enhancements in mass ranges of 730 and 890 MeV/c2.

  37. The solid curveis the sum of 2BW and background (black) taken in the form of a superposition polynomial up tothe 6-th degree. The dashed curve (red) is the background by polynomial without mass range of 0.75< M K <0.96 MeV/c2 when was used1BW function.

  38. Conclusion • The experimental / + ratio in the pC reaction is approximately two times larger than this ratio from pp reactions or from simulated pC reactions by FRITIOF model at momentum 10 GeV/c. • The invariant mass of + and K0s  spectra has observed well known resonances *+(1385) and K*+( 890) ( from PDG). Test method. • The width of exited *-(1385) is two time larger In mediumthan PDG data (preliminary result). • Experimental production of stopped -have obseved which have 7-8 times larger cross sectionthan expected for p+propane interaction (preliminary result). • *-(1480) resonance observed which is agreed with SVD result. • A few events were registeredby hypothesis of light H0 and heavy H 0,+ dibaryons by weak decay channels to (-,p), ( ,p, 0), (+p-), (K-,p, p). • A number of important peculiarities were observed in pA (K0S ) X reactions in the effective mass spectra for exotic states with decay modes: • 1) ( ,),( ,p), ( ,p, p); 2) (K0s,p), (K0S, ), (K0S,  ). • Peaks for ( ,p) spectrumareagreed with experimental data from the recently reports of FOPI, OBELIX, FINUDA collaborations. New obtained statistical significance for mass M(2220)p is equal to 6 S.D.. Bratislava, September 5, 2007

  39. Peaks for ( pp)in mass ranges of 3138(6.1 S.D.) and 3199(3.3 S.D.) MeV/c2spectrum were agreed with registered peaks from reports of KEK,FOPI and OBELIX. • The experimental result from Dubna for (p) correlation have got the very high estimation from authors T. Yamazaki, K.Imai ,Y. Akaishi and N.Herman(FOPI) • Structures seen in Λpp und Λp final states in different reactions conflicting peak positions or widths? • The experimental results for +(1540)(cited 102 times) spectrum with exited states have got the very high estimation in reports fromauthors P. Palazzi, A Arkhipov, D. Akers and A.Airapetian(HERA) . • The peaks (1750±18) and (1795±20) MeV/c2 are possible candidates for two pentaquark states: the N0 with quark content udsds decaying into K0and the *0 with quark content udssd decaying into K0(bar). • Significant enhancements for K0sspectraare observed with mass of 720 S.D. (4.1-15.2 S.D) , 780 MeV/c2 (2.5 - 4.2 S.D.) and width (35-125) MeV/c2 , 12 MeV/c2 respectively.K*+(1060) exited state with 7.2 S.D. observed only by channel of K0s+. Bratislava, September 5, 2007

  40. The intriguing results of the observation on propane bubble chamber has induced the interest to continue these searches • for exotic strange multiquark states with  and K0s sysems at FAIR (GSI), JPARC(KEK),NICA(JINR), Frascati,CLOE and JLAB, which can get a valuable information about their nature, properties and it will be a test for observed data on PBC. Higher statistics and interaction with different nucleas is needed. • Much of the quark (u, d, s) spectroscopy data are from the 1960’s and 1970’s, and the patterns of the observed resonances have been well studied. However, with the expected significant improvement in the knowledge of the hadron spectra, additional symmetries may become evident. These could point to new effective degrees of freedom. For example, is the quark-diquark or three quark picture for baryons more appropriate? What degrees of freedom are suggested by the spectra of hybrids, glueballs, and/or exotic states? Bratislava, September 5, 2007 Thank you very much!

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