Hadron Production at Intermediate pT at RHIC
نویسنده
چکیده
Large proton and antiproton enhancement with respect to pions has been observed at intermediate transverse momentum pT ≈ 2-5 GeV/c in Au+Au collisions at RHIC. To investigate the possible source of this anomaly, the production of φ mesons and two particle angular correlations triggered by mid-pT baryons or mesons are studied. We also present the first measurement of proton and antiproton production at √ sNN = 62.4 GeV in Au+Au collisions, which aims to study the energy dependence of the observed baryon enhancement.
منابع مشابه
High pT Probes of Dense Matter Created in Heavy Ion Collisions at RHIC
An overview of recent high-pT hadron and photon measurements at RHIC is presented with a focus on the evolution of hadron/photon production from intermediate pT (. 5 GeV/c) to high pT (> 10 GeV/c). Addressed topics include single high-pT hadron production, azimuthal anisotropy of π production, di-jet modification at intermediate pT and inclusive photon-hadron correlations. The understanding of ...
متن کاملIdentified hadron spectra from pp, dA and AA collisions
The experimental data for identified hadron spectra from pp, d+A and AA collisions are reviewed. Three regions with different dominant production mechanisms are considered: soft region (pT < 2 GeV/c) – with large degree of collectivity and thermalization, hard particle production which exhibits jet-quenching in Au+Au collisions at RHIC and intermediate region (2< pT <5 GeV/c) with distinct bary...
متن کاملResolutions of Several Puzzles at Intermediate pT and Recent Developments in Correlation
Some of the puzzles on hadron production at intermediate pT found at RHIC are explained as natural consequences of parton recombination. In that framework for hadronization the correlation among hadrons produced in jets can be calculated. Some new results on both near-side and away-side jet structures are presented.
متن کاملHigh-pT and jets
An overview of new experimental results on high-pT particle production and jets in heavy ion collisions from the Quark Matter 2006 conference is presented. In these proceedings, I will summarise new results on high-pT particle production and jet-like correlations from Quark Matter 2006. The large statistic data sample collected at RHIC in p+p, Cu+Cu and Au+Au provides access to increasingly hig...
متن کاملEvidence from Identified Particles for Active Quark and Gluon Degrees of Freedom
Measurements of intermediate pT (1.5 < pT < 5.0 GeV/c) identified particle distributions in heavy ion collisions at SPS and RHIC energies display striking dependencies on the number of constituent quarks in the corresponding hadron. One finds that elliptic flow at intermediate pT follows a constituent quark scaling law as predicted by models of hadron formation through coalescence. In addition,...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2004