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

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Presentation transcript:

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

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

A pre-femtoscopy period

1960

1967

1969

The begin of femtoscopy

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

1970

1973

Correlation function Space Time 1974

Mixing technique

M.I. PodgoretskiV.G. Grishin 1975 ~ 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 Weekly meeting of propane bubble chamber group.

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”

First correlation function for two neutral pions

1981 Lednicky and Lyuboshitz solved the problem of final state interaction R. Lednicky and V.L. Lyuboshitz Influence of Final-state interaction on the correlatins of two particles with nearly equal momenta Dubna report: E Sov. Journ. Nucl. Phys. 35 (1982)

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

Q G P

NA mid-rapidity

NA351988

Seminar of Yu.Sinyukov in Dubna

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

Yuri Sinyukov „Length of homogeneity”

Correlation Workshops

Meetings dedicated to particle correlations

My way to „femtoscopy”

1993

Workshops on Particle Correlations and Femtoscopy Workshops on Particle Correlations and Femtoscopy

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

Budapest Meetings

2003

3rd BUDAPEST WINTER SCHOOL ON HEAVY ION PHYSICS December 8-11 (Mon.-Thur.), 2003, Budapest (Hungary)

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)

QM in Budapest, 2005

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

q

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

Momentum dependence

E286 experimental set up

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

...Meeting dedicated to „DEMON” detector… which was dedicated to cerrelation measurements. 1998

Measurements q Number of twoparticle kombinations N=n(n-1)/2 52 DO I =1, N-1 DO J=I+1, N …….