1 / 10

Olga Piskounova, P.N.Lebedev Physical Institute,

Leading Effects in the Spectra of L c and anti L c Produced in S - p, pp and p - p Interactions. Olga Piskounova, P.N.Lebedev Physical Institute,. Quark-Gluon String Model. N-Pomeron exchange diagram illustrates the multiparticle production at high energy. O.Piskounova.

noelle
Download Presentation

Olga Piskounova, P.N.Lebedev Physical Institute,

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. LeadingEffects in the Spectra ofLcandantiLcProduced inS- p, pp andp- p Interactions. Olga Piskounova, P.N.Lebedev Physical Institute,

  2. Quark-Gluon String Model N-Pomeron exchange diagram illustrates the multiparticle production at high energy. O.Piskounova

  3. Valence Quark Distributions in QGSM O.Piskounova Inclusive production cross section of hadrons H is written as a sum over n-Pomeron cylinder diagrams: Distribution functions of Lc in p-p collisions are given by:

  4. Fragmentation diagrams

  5. Diquark Fragmentation Function and String Junction Transfer Diquark fragmentation function includes the constant afLc that can be interpreted as “leading” paremeter: where the term z2aR(0)-2aN(0) means the probability for diquark to have z close to 0. Fragmentation function of string junction is of the similar form: where aSJ(0)=0,5. O.Piskounova

  6. D meson asymmetry in pp O.Piskounova c

  7. Lc /antiLc asymmetry in Sp O.Piskounova

  8. Lc /antiLc asymmetry in pp O.Piskounova

  9. H1result

  10. Conclusions The nonzero baryon/antibaryon asymmetry in pion reaction is sensitive to the features of baryon charge transfer by the proton string junction. This effect should be seen in muon- and photon-proton colisions The charmed baryon/antibaryon spectra were discribed with the same leading fragmentation parameter af=0.006 There is no need to involve “intrinsic charm” in the calculation of charmed baryon spectra at the up-to-date level of experimental data O.Piskounova

More Related