Dariusz Miskowiec, Particle correlations in ALICE, Physics at the LHC, Hamburg, 10-Jun First results on particle correlations from ALICE Dariusz Miśkowiec, GSI Darmstadt and EMMI for the ALICE Collaboration why two-pion correlations two-pion correlations at 900 GeV first look at 7 TeV data try harder: high-p T correlations summary

Dariusz Miskowiec, Particle correlations in ALICE, Physics at the LHC, Hamburg, 10-Jun transverse expansion  p T spectra look thermal but boosted longitudinal expansion  source size depends on p T Collectivity in nuclear collisions collective transverse velocity apparent source of pions with given (y,p T )

Dariusz Miskowiec, Particle correlations in ALICE, Physics at the LHC, Hamburg, 10-Jun temperature and transverse flow when energy conservation treated properly 3 Mike Lisa, CERN Theory Phenomenology Seminar, 16-Oct-2009 Transverse expansion transverse expansion seems to be there even in very peripheral nuclear collisions

Dariusz Miskowiec, Particle correlations in ALICE, Physics at the LHC, Hamburg, 10-Jun Pion source size from STAR STAR, arXiv: [nucl-ex] STAR, Phys. Rev. C 80 (2009) p T dependence of pion source size similar in nuclear and pp collisions Au + Au Cu + Cu p + p (various ways of fitting)

Dariusz Miskowiec, Particle correlations in ALICE, Physics at the LHC, Hamburg, 10-Jun identical-pion correlation analysis technique (HBT) peak width ~ 1 / source size pion source size accessible experimentally

Dariusz Miskowiec, Particle correlations in ALICE, Physics at the LHC, Hamburg, 10-Jun Two-pion correlation functions in A+A and p+p collisions baseline shape is the challenge in p+p data

Dariusz Miskowiec, Particle correlations in ALICE, Physics at the LHC, Hamburg, 10-Jun pp at sqrt(s) = 900 GeV 250 k minimum bias events 10 days starting on Dec 6, 2009

Dariusz Miskowiec, Particle correlations in ALICE, Physics at the LHC, Hamburg, 10-Jun D. Miskowiec, ALICE femto meeting identical pion correlation functions Bose-Einstein peak clearly visible

Dariusz Miskowiec, Particle correlations in ALICE, Physics at the LHC, Hamburg, 10-Jun D. Miskowiec, ALICE femto meeting Unlike-sign pion correlation function Coulomb and K 0 S peaks visible

Dariusz Miskowiec, Particle correlations in ALICE, Physics at the LHC, Hamburg, 10-Jun Multiplicity and transverse momentum dependence identical pions unlike-sign pions baseline has to be treated properly

Dariusz Miskowiec, Particle correlations in ALICE, Physics at the LHC, Hamburg, 10-Jun Multiplicity dependence visible dependence in pp  HBT radii depend on multiplicity rather than on collision geometry for comp.: nuclear collisions M. Lisa, Ann. Rev. Nucl. Part. Sci. 55, 357

Dariusz Miskowiec, Particle correlations in ALICE, Physics at the LHC, Hamburg, 10-Jun Transverse momentum dependence no significant dependence on transverse momentum for comparison: in nuclear collisions

Dariusz Miskowiec, Particle correlations in ALICE, Physics at the LHC, Hamburg, 10-Jun Dependence on the baseline assumption but: transverse momentum dependence is sensitive to the baseline shape assumption

Dariusz Miskowiec, Particle correlations in ALICE, Physics at the LHC, Hamburg, 10-Jun pp at sqrt(s) = 7 TeV 180 M minimum bias events from March 31 till now 120 M events used for this talk

Dariusz Miskowiec, Particle correlations in ALICE, Physics at the LHC, Hamburg, 10-Jun pp at sqrt(s) = 900 GeV 7 M minbias events on May 2-3, M events used for this talk

Dariusz Miskowiec, Particle correlations in ALICE, Physics at the LHC, Hamburg, 10-Jun TeV and new 900 GeV data high-q baseline flatter at 7 TeV identical pion correlations 120 M events at 7 TeV 2.1 M events at 0.9 TeV

Dariusz Miskowiec, Particle correlations in ALICE, Physics at the LHC, Hamburg, 10-Jun π + π - correlations at 7 TeV K0SK0S ρ f0f0 f2f2 ω Coulomb rich resonance structure low-q baseline steeper at 7 TeV  origin: jets high-q baseline flatter at 7 TeV  origin: momentum cons.

Dariusz Miskowiec, Particle correlations in ALICE, Physics at the LHC, Hamburg, 10-Jun Non-identical particle correlations from pp at 7 TeV C(q out ) asymmetry -- another handle on transverse flow pion - kaon pion - proton K*K* Δ Λ example: Pb+Au at 17.2 GeV CF’s from CERES π+π - π - p π+p

Dariusz Miskowiec, Particle correlations in ALICE, Physics at the LHC, Hamburg, 10-Jun Summary HBT radii at 900 GeV depend on multiplicity no strong dependence on transverse momentum correlation baseline of crucial importance

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Dariusz Miskowiec, Particle correlations in ALICE, Physics at the LHC, Hamburg, 10-Jun transverse momentum dependence of R side

Dariusz Miskowiec, Particle correlations in ALICE, Physics at the LHC, Hamburg, 10-Jun baseline slope significant at 0.9 TeV and above study by Adam Kisiel

Dariusz Miskowiec, Particle correlations in ALICE, Physics at the LHC, Hamburg, 10-Jun TeV, identical pions low mult high mult

Dariusz Miskowiec, Particle correlations in ALICE, Physics at the LHC, Hamburg, 10-Jun High stat 900 GeV from 2010, identical pions low mult high mult

Dariusz Miskowiec, Particle correlations in ALICE, Physics at the LHC, Hamburg, 10-Jun TeV, unlike-sign pions low mult high mult

Dariusz Miskowiec, Particle correlations in ALICE, Physics at the LHC, Hamburg, 10-Jun High stat 900 GeV, from 2010 unlike-sign pions low mult high mult