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Exploring Femtoscopy: A Personal Journey Through Particle Correlations

Dive into the history and development of femtoscopy and WPCF through the lens of a personal perspective. This article traces the evolution of particle correlations as a tool to measure space-time sizes in high-energy collisions, spanning from the pre-femtoscopy period to modern-day workshops and seminars. Learn about key milestones such as the settling of correlation femtoscopy basics by Kopylov and Podgoretsky, the dimensions of secondary emission regions measured by Grishin et al., and the influence of final-state interaction on particle correlations. Explore the impact of Hanbury-Brown/Twiss correlations on expanding hadron and quark-gluon matter, and discover the fascinating world of particle correlations workshops. Follow along with author Tamas Csorgo's reflections on the new discoveries made in heavy ion physics. Join the journey through the world of femtoscopy, from its beginnings to modern-day explorations.

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Exploring Femtoscopy: A Personal Journey Through Particle Correlations

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  1. Brief history of femtoscopy and WPCF - a personal view very ~10-1 m ~10-10 m ~10-15 m

  2. Particle correlations as a tool to measure space-time sizes of high energy collisions QS+FSI reaction axis Quantum Statistics (QS) and Final State Interaction (FSI) Space-time sizes (10-15 m, 10-23s (directly unmeasurable)  Momentum difference (can be measured)  Particle correlations at small relative velocities

  3. A pre-femtoscopy period

  4. 1960

  5. 1967

  6. 1969

  7. Thebegin of femtoscopy

  8. 1972 ~ 4 Kopylov and Podgoretsky settled the basics of correlation femtoscopy: • correlation function, • mixing technique, • role of space-time characteristics etc. Podgorecki, Kopylov, Smorodinski Dubna, 1974

  9. 1970

  10. 1973

  11. 1974 Correlation function Space Time

  12. Mixing technique 1974

  13. 1975 ~1990 -Grishin, propane bubble chamber group and others in Dubna - measured two-particle correlations for various reactions and two-particle systems in the energy domain of several GeV/nucleon V.G. Grishin M.I. Podgoretski Weekly meeting of propane bubble chamber group.

  14. G.N. Agakishiev et al. Dimensions of the secondary pion emission region in multi-nucleon collisions of nuclear projectiles D,He,and C with C and Ta nuclei at the incident momentum of 4.2 Gev/c per nucleon, Sov. Journ. Of Nucl. Phys, 39 (1984) 543 The first attempt to „participant dependence”

  15. First correlation function for two neutral pions

  16. 1981 Lednicky and Lyuboshitz solved the problem of final state interaction 1981 R. Lednicky and V.L. Lyuboshitz Influence of Final-stateinteraction on thecorrelatins of twoparticles withnearlyequalmomenta Dubna report: E2-81-453 Sov. Journ. Nucl. Phys. 35 (1982) 770

  17. J. Bartke, Size of the pion emission region in collisions of relativistic nuclei from intensity interferometry, Phys. Lett B (1986) 32 Summary (and the END) of static source period

  18. Q G P

  19. NA35 1988 mid-rapidity

  20. NA35 1988

  21. 1988 - Seminar of Yu.Sinyukov in Dubna

  22. Yu. M Sinyukov, Hanbury-Brown/Twiss correlations for expanding hadron and quark-gluon matter, Nucl.Phys. A498 (1989) 151c u.

  23. Yuri Sinyukov „Length of homogeneity”

  24. CorrelationWorkshops

  25. Meetings dedicated to particle correlations 1990 1993 1990

  26. My way to „femtoscopy”

  27. 1993

  28. Workshops on ParticleCorrelations and Femtoscopy

  29. Second Warsaw Meeting on Particle Correlations and Resonances Warsaw (Poland) 15 – 18 October, 2003

  30. BudapestMeetings

  31. 2003

  32. 3rd BUDAPEST WINTER SCHOOL ON HEAVY ION PHYSICS December 8-11 (Mon.-Thur.), 2003, Budapest (Hungary)http://www.kfki.hu/~csorgo/school03/

  33. Tamas Csorgo – personal view: A new world discovered: But is it India or America? Is it QGP or some other new form of matter? 3rd BUDAPEST WINTER SCHOOL ON HEAVY ION PHYSICS December 8-11 (Mon.-Thur.), 2003, Budapest (Hungary) http://www.kfki.hu/~csorgo/school03/

  34. QM in Budapest, 2005

  35. Who participated in the first WPCF in Kromeriz? Who participated in all WPCFs?? In this Workshop participate 86 persons.? …with my wishes of interesting reports, fascinating discussions and fruitful conclusions !!! Jan Pluta

  36. q

  37. N. Angelov et al. Two-particle correlations of secondary protons in pi-12C interactions at 40 GeV/c

  38. Momentum dependence

  39. E286 experimental set up

  40. Richard Lednicky (1993) : Jan, for a static source, the correction of momentum for particle with the charge ±1 will be: …

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