Inclusive cross section and double helicity asymmetry for pi(0) production in p plus p collisions at root s=62.4 GeV

Autoria(s): ADARE, A.; AFANASIEV, S.; AIDALA, C.; AJITANAND, N. N.; AKIBA, Y.; AL-BATAINEH, H.; ALEXANDER, J.; AOKI, K.; APHECETCHE, L.; ASAI, J.; ATOMSSA, E. T.; AVERBECK, R.; AWES, T. C.; AZMOUN, B.; BABINTSEV, V.; BAI, M.; BAKSAY, G.; BAKSAY, L.; BALDISSERI, A.; BARISH, K. N.; BARNES, P. D.; BASSALLECK, B.; BASYE, A. T.; BATHE, S.; BATSOULI, S.; BAUBLIS, V.; BAUMANN, C.; BAZILEVSKY, A.; BELIKOV, S.; BENNETT, R.; BERDNIKOV, A.; BERDNIKOV, Y.; BICKLEY, A. A.; BOISSEVAIN, J. G.; BOREL, H.; BOYLE, K.; BROOKS, M. L.; BUESCHING, H.; BUMAZHNOV, V.; BUNCE, G.; BUTSYK, S.; CAMACHO, C. M.; CAMPBELL, S.; CHAND, P.; CHANG, B. S.; CHANG, W. C.; CHARVET, J.-L.; CHERNICHENKO, S.; CHI, C. Y.; CHIU, M.; CHOI, I. J.; CHOUDHURY, R. K.; CHUJO, T.; CHUNG, P.; CHURYN, A.; CIANCIOLO, V.; CITRON, Z.; COLE, B. A.; CONSTANTIN, P.; CSANAD, M.; CSOERGO, T.; DAHMS, T.; DAIRAKU, S.; DAS, K.; DAVID, G.; DENISOV, A.; D'ENTERRIA, D.; DESHPANDE, A.; DESMOND, E. J.; Dietzsch, Olacio; DION, A.; Donadelli, Marisílvia; DRAPIER, O.; DREES, A.; DREES, K. A.; DUBEY, A. K.; DURUM, A.; DUTTA, D.; DZHORDZHADZE, V.; EFREMENKO, Y. V.; EGDEMIR, J.; ELLINGHAUS, F.; ENGELMORE, T.; ENOKIZONO, A.; EN'YO, H.; ESUMI, S.; EYSER, K. O.; FADEM, B.; FIELDS, D. E.; FINGER, M.; FINGER JR., M.; FLEURET, F.; FOKIN, S. L.; FRAENKEL, Z.; FRANTZ, J. E.; FRANZ, A.; FRAWLEY, A. D.; FUJIWARA, K.; FUKAO, Y.; FUSAYASU, T.; GARISHVILI, I.; GLENN, A.; GONG, H.; GONIN, M.; GOSSET, J.; GOTO, Y.; CASSAGNAC, R. Granier de; GRAU, N.; GREENE, S. V.; PERDEKAMP, M. Grosse; GUNJI, T.; GUSTAFSSON, H.-A.; HENNI, A. Hadj; HAGGERTY, J. S.; HAMAGAKI, H.; HAN, R.; HARTOUNI, E. P.; HARUNA, K.; HASLUM, E.; HAYANO, R.; HEFFNER, M.; HEMMICK, T. K.; HESTER, T.; HE, X.; HILL, J. C.; HOHLMANN, M.; HOLZMANN, W.; HOMMA, K.; HONG, B.; HORAGUCHI, T.; HORNBACK, D.; HUANG, S.; ICHIHARA, T.; ICHIMIYA, R.; IKEDA, Y.; IMAI, K.; IMREK, J.; INABA, M.; ISENHOWER, D.; ISHIHARA, M.; ISOBE, T.; ISSAH, M.; ISUPOV, A.; IVANISCHEV, D.; JACAK, B. V.; JIA, J.; JIN, J.; JOHNSON, B. M.; JOO, K. S.; JOUAN, D.; KAJIHARA, F.; KAMETANI, S.; KAMIHARA, N.; KAMIN, J.; KANG, J. H.; KAPUSTINSKY, J.; KAWALL, D.; KAZANTSEV, A. V.; KEMPEL, T.; KHANZADEEV, A.; KIJIMA, K. M.; KIKUCHI, J.; KIM, B. I.; KIM, D. H.; KIM, D. J.; KIM, E.; KIM, S. H.; KINNEY, E.; KIRILUK, K.; KISS, A.; KISTENEV, E.; KLAY, J.; KLEIN-BOESING, C.; KOCHENDA, L.; KOCHETKOV, V.; KOMKOV, B.; KONNO, M.; KOSTER, J.; KOZLOV, A.; KRAL, A.; KRAVITZ, A.; KUNDE, G. J.; KURITA, K.; KUROSAWA, M.; KWEON, M. J.; KWON, Y.; KYLE, G. S.; LACEY, R.; LAI, Y. S.; LAJOIE, J. G.; LAYTON, D.; LEBEDEV, A.; LEE, D. M.; LEE, K. B.; LEE, T.; LEITCH, M. J.; Leite, Marco Aurelio Lisboa; Lenzi, Bruno Rodrigues; LIEBING, P.; LISKA, T.; LITVINENKO, A.; LIU, H.; LIU, M. X.; LI, X.; LOVE, B.; LYNCH, D.; MAGUIRE, C. F.; MAKDISI, Y. I.; MALAKHOV, A.; MALIK, M. D.; MANKO, V. I.; MANNEL, E.; MAO, Y.; MASEK, L.; MASUI, H.; MATATHIAS, F.; MCCUMBER, M.; MCGAUGHEY, P. L.; MEANS, N.; MEREDITH, B.; MIAKE, Y.; MIKES, P.; MIKI, K.; MILOV, A.; MISHRA, M.; MITCHELL, J. T.; MOHANTY, A. K.; MORINO, Y.; MORREALE, A.; MORRISON, D. P.; MOUKHANOVA, T. V.; MUKHOPADHYAY, D.; MURATA, J.; NAGAMIYA, S.; NAGLE, J. L.; NAGLIS, M.; NAGY, M. I.; NAKAGAWA, I.; NAKAMIYA, Y.; NAKAMURA, T.; NAKANO, K.; NEWBY, J.; NGUYEN, M.; NIITA, T.; NOUICER, R.; NYANIN, A. S.; O'BRIEN, E.; ODA, S. X.; OGILVIE, C. A.; OKADA, H.; OKADA, K.; OKA, M.; ONUKI, Y.; OSKARSSON, A.; OUCHIDA, M.; OZAWA, K.; PAK, R.; PALOUNEK, A. P. T.; PANTUEV, V.; PAPAVASSILIOU, V.; PARK, J.; PARK, W. J.; PATE, S. F.; PEI, H.; PENG, J.-C.; PEREIRA, H.; PERESEDOV, V.; PERESSOUNKO, D. Yu.; PINKENBURG, C.; PURSCHKE, M. L.; PURWAR, A. K.; QU, H.; RAK, J.; RAKOTOZAFINDRABE, A.; RAVINOVICH, I.; READ, K. F.; REMBECZKI, S.; REUTER, M.; REYGERS, K.; RIABOV, V.; RIABOV, Y.; ROACH, D.; ROCHE, G.; ROLNICK, S. D.; ROSATI, M.; ROSENDAHL, S. S. E.; ROSNET, P.; RUKOYATKIN, P.; RUZICKA, P.; RYKOV, V. L.; SAHLMUELLER, B.; SAITO, N.; SAKAGUCHI, T.; SAKAI, S.; SAKASHITA, K.; SAMSONOV, V.; SATO, T.; SAWADA, S.; SEDGWICK, K.; SEELE, J.; SEIDL, R.; SEMENOV, A. Yu.; SEMENOV, V.; SETO, R.; SHARMA, D.; SHEIN, I.; SHIBATA, T.-A.; SHIGAKI, K.; SHIMOMURA, M.; SHOJI, K.; SHUKLA, P.; SICKLES, A.; Silva, Cesar Luiz da; SILVERMYR, D.; SILVESTRE, C.; SIM, K. S.; SINGH, B. K.; SINGH, C. P.; SINGH, V.; SLUNECKA, M.; SOLDATOV, A.; SOLTZ, R. A.; SONDHEIM, W. E.; SORENSEN, S. P.; SOURIKOVA, I. V.; STALEY, F.; STANKUS, P. W.; STENLUND, E.; STEPANOV, M.; STER, A.; STOLL, S. P.; SUGITATE, T.; SUIRE, C.; SUKHANOV, A.; SZIKLAI, J.; Takagui, Emi Marcia; TAKETANI, A.; TANABE, R.; TANAKA, Y.; TANIDA, K.; TANNENBAUM, M. J.; TARANENKO, A.; TARJAN, P.; THEMANN, H.; THOMAS, T. L.; TOGAWA, M.; TOIA, A.; TOMASEK, L.; TOMITA, Y.; TORII, H.; TOWELL, R. S.; TRAM, V.-N.; TSERRUYA, I.; TSUCHIMOTO, Y.; VALE, C.; VALLE, H.; HECKE, H. W. van; VEICHT, A.; VELKOVSKA, J.; VERTESI, R.; VINOGRADOV, A. A.; VIRIUS, M.; VRBA, V.; VZNUZDAEV, E.; WALKER, D.; WANG, X. R.; WATANABE, Y.; WEI, F.; WESSELS, J.; WHITE, S. N.; WILLIAMSON, S.; WINTER, D.; WOODY, C. L.; WYSOCKI, M.; XIE, W.; YAMAGUCHI, Y. L.; YAMAURA, K.; YANG, R.; YANOVICH, A.; YING, J.; YOKKAICHI, S.; YOUNG, G. R.; YOUNUS, I.; YUSHMANOV, I. E.; ZAJC, W. A.; ZAUDTKE, O.; ZHANG, C.; ZHOU, S.; ZOLIN, L.
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO
Data(s)

18/04/2012

18/04/2012

2009
Resumo

The PHENIX experiment presents results from the RHIC 2006 run with polarized p + p collisions at root s = 62.4 GeV, for inclusive pi(0) production at midrapidity. Unpolarized cross section results are measured for transverse momenta p(T) = 0.5 to 7 GeV/c. Next-to-leading order perturbative quantum chromodynamics calculations are compared with the data, and while the calculations are consistent with the measurements, next-to-leading logarithmic corrections improve the agreement. Double helicity asymmetries A(LL) are presented for p(T) = 1 to 4 GeV/c and probe the higher range of Bjorken x of the gluon (x(g)) with better statistical precision than our previous measurements at root s = 200 GeV. These measurements are sensitive to the gluon polarization in the proton for 0.06 < x(g) < 0.4.

Department of Energy (DOE)

National Science Foundation (NSF)

Renaissance Technologies LLC

Abilene Christian University Research Council

Research Foundation of SUNY

Dean of the College of Arts and Sciences

Vanderbilt University (U.S.A)

Ministry of Education, Culture, Sports, Science, and Technology (MEXT), Japan

JSPS - Japan Society for the Promotion of Science (Japan)

Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)

Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) (Brazil)

NSFC Natural Science Foundation of China (People's Republic of China)

MSMT Ministry of Education, Youth and Sports (Czech Republic)

Centre National de la Recherche Scientifique - CNRS

CEA Commissariat al'Energie Atomique

(CNRS/IN2P3) Institut National de Physique Nucleaire et de Physique des Particules (France)

BMBF - Bundesministerium fur Bildung und Forschung, Germany

Forschung, Deutscher Akademischer Austausch Dienst

Alexander von Humboldt Stiftung (Germany)

OTKA Hungarian National Science Fund

OTKA (Hungary)

(DAE) Department of Atomic Energy, India

ISF - Israel Science Foundation (Israel)

Korea Research Foundation (KRF)

Korea Science and Engineering Foundation (KOSEF)

Ministry of Education and Science

RAS Russian Academy of Sciences

FAAE Federal Agency of Atomic Energy (Russia)

Wallenberg Foundation (Sweden)

CRDF U. S. Civilian Research and Development Foundation

Independent States of the Former Soviet Union

U.S.-Hungarian Fulbright Foundation for Educational Exchange

(BSF) U.S.-Israel Binational Science Foundation
Identificador

PHYSICAL REVIEW D, v.79, n.1, 2009

1550-7998

http://producao.usp.br/handle/BDPI/16103

10.1103/PhysRevD.79.012003

http://dx.doi.org/10.1103/PhysRevD.79.012003
Idioma(s)

eng
Publicador

AMER PHYSICAL SOC
Relação

Physical Review D
Direitos

restrictedAccess

Copyright AMER PHYSICAL SOC
Palavras-Chave #HIGH TRANSVERSE-MOMENTUM #PROTON-PROTON COLLISIONS #CERN-ISR #POLARIZED PROTONS #SPIN ASYMMETRY #O PRODUCTION #PI0 MESONS #SCATTERING #SPECTRA #PREDICTIONS #Astronomy & Astrophysics #Physics, Particles & Fields
Tipo

article

original article

publishedVersion
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