Forward Lambda Production and Nuclear Stopping Power in D+Au Collisions at Root S(Nn)=200 Gev
نویسندگان
چکیده
We report the measurement of and ¯ yields and inverse slope parameters in d+Au collisions at √ s NN = 200 GeV at forward and backward rapidities (y = ±2.75), using data from the STAR forward time projection chambers. The contributions of different processes to baryon transport and particle production are probed exploiting the inherent asymmetry of the d+Au system. Comparisons to model calculations show that baryon transport on the deuteron side is consistent with multiple collisions of the deuteron nucleons with gold participants. On the gold side, HIJING-based models without a hadronic rescattering phase do not describe the measured particle yields, while models that include target remnants or hadronic rescattering do. The multichain model can provide a good description of the net baryon density in d+Au collisions at energies currently available at the BNL Relativistic Heavy Ion Collider, and the derived parameters of the model agree with those from nuclear collisions at lower energies.
منابع مشابه
D ec 2 00 4 Λ Production at Forward and Backward Rapidity in d + Au Collisions at √ s NN = 200 GeV
Using the forward time projection chambers of the STAR experiment at the Brookhaven Relativistic Heavy Ion Collider we measure the centrality dependent Λ and ¯ Λ yields and inverse slope parameters in d+Au collisions at forward and backward rapidities y = ±2.75. The contributions of different processes to stopping and baryon transport are probed exploiting the inherent asymmetry of the d+Au sys...
متن کاملForward Λ Production and Nuclear Stopping Power in d+Au Collisions at RHIC
sNN = 200 GeV at forward and backward rapidities. The contributions of different processes to particle production and baryon transport are probed exploiting the inherent asymmetry of the d+Au system. While the d side appears to be dominated by multiple independent nucleon-nucleon collisions, nuclear effects contribute significantly on the Au side. Using the constraint of baryon number conservat...
متن کاملParticle-type dependence of azimuthal anisotropy and nuclear modification of particle production in Au plus Au collisions at root s(NN)=200 GeV
متن کامل
O ct 2 00 5 Heavy flavor production in p + p and d + Au collisions at √ s NN = 200 GeV from single leptons over a wide kinematic range
The PHENIX experiment at the Relativistic Heavy Ion Collider has measured single electrons at midrapidity and single muons at forward and backward rapidities (1.2 < |y| < 2.2) for p+p and d+Au collisions at √ s N N = 200 GeV. The inclusive lepton spectra exhibit excesses over light hadron sources. The excesses are attributed to semileptonic decays of charm and bottom hadrons and compared to the...
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 2013