Maqola

Nucleon-gold collisions at 200A GeV using tagged d + Au interactions in the PHOBOS detector

B. B. BackArgonne National Laboratory , Argonne , Illinois 60439-4843 , USAM. D. BakerBrookhaven National Laboratory , Upton , New York 11973-5000 , USABarton, D. S.Brookhaven National Laboratory , Upton , New York 11973-5000 , USABruce BeckerBrookhaven National Laboratory , Upton , New York 11973-5000 , USABetts, R. R.University of Illinois at Chicago , Chicago , Illinois 60607-7059 , USAAbigail A. BickleyUniversity of Maryland , College Park , Maryland 20742 , USABindel, R.University of Maryland , College Park , Maryland 20742 , USAA. CarrollBrookhaven National Laboratory , Upton , New York 11973-5000 , USAGarcía, E.University of Illinois at Chicago , Chicago , Illinois 60607-7059 , USAT. GburekInstitute of Nuclear Physics , Kraków , PolandN. GeorgeBrookhaven National Laboratory , Upton , New York 11973-5000 , USAGushue, S.Brookhaven National Laboratory , Upton , New York 11973-5000 , USAHalliwell, C.University of Illinois at Chicago , Chicago , Illinois 60607-7059 , USAHamblen, J.University of Rochester , Rochester , New York 14627 , USAHarrington, A. S.University of Rochester , Rochester , New York 14627 , USADavid Jonathan HofmanUniversity of Illinois at Chicago , Chicago , Illinois 60607-7059 , USAHollis, R. S.University of Illinois at Chicago , Chicago , Illinois 60607-7059 , USAHołyński, R.Krakow Cardiovascular Research InstituteB. HolzmanBrookhaven National Laboratory , Upton , New York 11973-5000 , USAIordanova, A.University of Illinois at Chicago , Chicago , Illinois 60607-7059 , USAElizabeth C. JohnsonUniversity of Rochester , Rochester , New York 14627 , USAKane, J. L.Massachusetts Institute of Technology , Cambridge , Massachusetts 02139-4307 , USAKhan, N.University of Rochester , Rochester , New York 14627 , USAKuo, C. M.National Central University , Chung-Li , TaiwanLin, W. T.National Central University , Chung-Li , TaiwanS. ManlyUniversity of Rochester , Rochester , New York 14627 , USAMignerey, A. C.University of Maryland , College Park , Maryland 20742 , USANouicer, R.Brookhaven National Laboratory , Upton , New York 11973-5000 , USAOlszewski, A.Krakow Cardiovascular Research InstitutePak, R.Brookhaven National Laboratory , Upton , New York 11973-5000 , USAPark, I. C.University of Rochester , Rochester , New York 14627 , USAH. PerneggerMassachusetts Institute of Technology , Cambridge , Massachusetts 02139-4307 , USASagerer, J.University of Illinois at Chicago , Chicago , Illinois 60607-7059 , USAI. SedykhBrookhaven National Laboratory , Upton , New York 11973-5000 , USASkulski, W.University of Rochester , Rochester , New York 14627 , USAChristopher SmithUniversity of Illinois at Chicago , Chicago , Illinois 60607-7059 , USAP. SteinbergBrookhaven National Laboratory , Upton , New York 11973-5000 , USASukhanov, A.Brookhaven National Laboratory , Upton , New York 11973-5000 , USATonjes, M. B.University of Maryland , College Park , Maryland 20742 , USAA. TrzupekInstitute of Nuclear Physics , Kraków , Polandvan Nieuwenhuizen, G. J.Massachusetts Institute of Technology , Cambridge , Massachusetts 02139-4307 , USAF. L. H. WolfsUniversity of Rochester , Rochester , New York 14627 , USAWosiek, B.Krakow Cardiovascular Research InstituteK. W. WoźniakInstitute of Nuclear Physics , Kraków , PolandM. BallintijnMassachusetts Institute of Technology , Cambridge , Massachusetts 02139-4307 , USABusza, WitMassachusetts Institute of Technology , Cambridge , Massachusetts 02139-4307 , USAJang Woo LeeMassachusetts Institute of Technology , Cambridge , Massachusetts 02139-4307 , USAStephans, George S. F.Massachusetts Institute of Technology , Cambridge , Massachusetts 02139-4307 , USAVerdier, RobinMassachusetts Institute of Technology , Cambridge , Massachusetts 02139-4307 , USAG. I. VeresMassachusetts Institute of Technology , Cambridge , Massachusetts 02139-4307 , USAWyslouch, BoleslawZhang, JinlongMassachusetts Institute of Technology , Cambridge , Massachusetts 02139-4307 , USADecowski, Michael P.Massachusetts Institute of Technology , Cambridge , Massachusetts 02139-4307 , USAGulbrandsen, K.Massachusetts Institute of Technology , Cambridge , Massachusetts 02139-4307 , USAHenderson, C.Massachusetts Institute of Technology , Cambridge , Massachusetts 02139-4307 , USAKulinich, PiotrMassachusetts Institute of Technology , Cambridge , Massachusetts 02139-4307 , USAReed, C.Massachusetts Institute of Technology , Cambridge , Massachusetts 02139-4307 , USARoland, Christof EMassachusetts Institute of Technology , Cambridge , Massachusetts 02139-4307 , USARoland, Gunther MMassachusetts Institute of Technology , Cambridge , Massachusetts 02139-4307 , USASarin, P.Massachusetts Institute of Technology , Cambridge , Massachusetts 02139-4307 , USAVale, C.Massachusetts Institute of Technology , Cambridge , Massachusetts 02139-4307 , USAvan Nieuwenhuizen, Gerrit JMassachusetts Institute of Technology , Cambridge , Massachusetts 02139-4307 , USA

2015en

ABI

Annotatsiya

Forward calorimetry in the PHOBOS detector has been used to study charged hadron production in d + Au, p + Au, and n + Au collisions at √s[subscript NN] = 200 GeV. The forward proton calorimeter detectors are described and a procedure for determining collision centrality with these detectors is detailed. The deposition of energy by deuteron spectator nucleons in the forward calorimeters is used to identify p + Au and n + Au collisions in the data. A weighted combination of the yield of p + Au and n + Au is constructed to build a reference for Au + Au collisions that better matches the isospin composition of the gold nucleus. The p[subscript T] and centrality dependence of the yield of this improved reference system is found to match that of d + Au. The shape of the charged-particle transverse momentum distribution is observed to extrapolate smoothly from p + [bar over p] to central d + Au as a function of the charged-particle pseudorapidity density. The asymmetry of positively and negatively charged hadron production in p + Au is compared to that of n + Au. No significant asymmetry is observed at midrapidity. These studies augment recent results from experiments at the CERN Large Hadron Collider and BNL Relativistic Heavy Ion Collider facilities to give a more complete description of particle production in p + A and d + A collisions, essential for the understanding the medium produced in high-energy nucleus-nucleus collisions.

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