Inclusive pi^0, eta, and direct photon production at high transverse momentum in p+p and d+Au collisions at sqrt(s_NN) = 200 GeV

Autor: Abelev, B.I., M. Aggarwal, M., Ahammed, Z., V. Alakhverdyants, A., D. Anderson, B., Arkhipkin, D., S. Averichev, G., Balewski, J., Barannikova, O., S. Barnby, L., Baumgart, S., R. Beavis, D., Bellwied, R., Benedosso, F., J. Betancourt, M., Betts, R.R., Bhasin, A., K. Bhati, A., Bichsel, H., Bielcik, J., Bielcikova, J., Biritz, B., C. Bland, L., E. Bonner, B., Bouchet, J., Braidot, E., V. Brandin, A., Bridgeman, A., Bruna, E., Bueltmann, S., Bunzarov, I., P. Burton, T., Z. Cai, X., Caines, H., Calderon De La Barca Sanchez, M., Catu, O., Cebra, D., Cendejas, R., C. Cervantes, M., Chajecki, Z., Chaloupka, P., Chattopadhyay, S., F. Chen, H., H. Chen, J., Y. Chen, J., Cheng, J., Cherney, M., Chikanian, A., E. Choi, K., Christie, W., Chung, P., F. Clarke, R., J. M. Codrington, M., Corliss, R., G. Cramer, J., J. Crawford, H., Das, D., Dash, S., Davila Leyva, A., C. De Silva, L., Debbe, R.R., G. Dedovich, T., Dephillips, M., A. Derevschikov, A., Derradi De Souza, R., Didenko, L., Djawotho, P., M. Dogra, S., Dong, X., L. Drachenberg, J., E. Draper, J., C. Dunlop, J., R. Dutta Mazumdar, M., G. Emov, L., Elhalhuli, E., Elnimr, M., Engelage, J., Eppley, G., Erazmus, B., Estienne, Magali, Eun, L., Fachini, P., Fatemi, R., Fedorisin, J., G. Fersch, R., Filip, P., Finch, E., Fine, V., Fisyak, Y., Gagliardi, C.A., R. Gangadharan, D., S. Ganti, M., J. Garcia-Solis, E., Geromitsos, A., Geurts, F., Ghazikhanian, V., Ghosh, P., N. Gorbunov, Y., Gordon, A., Grebenyuk, O., Grosnick, D., Grube, B., M. Guertin, S., Gupta, Anupam, Gupta, N., Guryn, W., Haag, B., J. Hallman, T., Hamed, A., Han, L.-X., W. Harris, J., P. Hays-Wehle, J., Heinz, M., Heppelmann, S., Hirsch, A., Hjort, E., M. Homan, A., W. Ho_mann, G., J. Hofman, D., S. Hollis, R., Z. Huang, H., J. Humanic, T., Huo, L., Igo, G., Iordanova, A., Jacobs, P., Jacobs, W.W., Jakl, P., Jena, C., Jin, F., L. Jones, C., G. Jones, P., Joseph, J., G. Judd, E., Kabana, S., Kajimoto, K., Kang, K., Kapitan, J., Kauder, K., Keane, D., Kechechyan, A., Kettler, D., P. Kikola, D., Kiryluk, J., Kisiel, A., R. Klein, S., G. Knospe, A., Kocoloski, A., D. Koetke, D., Kollegger, T., Konzer, J., Kopytine, M., Koralt, I., Korsch, W., Kotchenda, L., Kouchpil, V., Kravtsov, P., Krueger, K., Krus, M., Kumar, L., Kurnadi, P., Lamont, M.A. C., M. Landgraf, J., Lapointe, S., Lauret, J., Lebedev, A., Lednicky, R., Lee, C.-H., H. Lee, J., Leight, W., J. Levine, M., Li, C., Li, L., Li, N., Li, W., Li, Xiaojian, Li, Y., Li, Zhenyu, Lin, G., J. Lindenbaum, S., M. A. Lisa,, Liu, Franklin, Liu, Hong, Liu, J., Ljubicic, T., J. Llope, W., S. Longacre, R., Love, W.A., Lu, Y., L. Ma, G., G. Ma, Y., P. Mahapatra, D., Majka, R., I. Mall, O., K. Mangotra, L., Manweiler, R., Margetis, S., Markert, C., Masui, H., S. Matis, H., A. Matulenko, Yu., Mcdonald, D., S. Mcshane, T., Meschanin, A., Milner, R., G. Minaev, N., Mioduszewski, S., Mischke, A., K. Mitrovski, M., Mohanty, B., M. Mondal, M., Morozov, D.A., G. Munhoz, M., K. Nandi, B., Nattrass, C., K. Nayak, T., M. Nelson, J., K. Netrakanti, P., J. Ng, M., V. Nogach, L., B. Nurushev, S., Odyniec, G., Ogawa, A., Okada, H., Okorokov, V., Olson, D., Pachr, M., S. Page, B., K. Pal, S., Pandit, Y., Panebratsev, Y., Pawlak, T., Peitzmann, T., Perevoztchikov, V., Perkins, C., Peryt, W., C. Phatak, S., Pile, P., Planinic, M., A. Ploskon, M., Pluta, J., Plyku, D., Poljak, N., M. Poskanzer, A., V. K. S. Potukuchi, B., B. Powell, C., Prindle, D., Pruneau, C., K. Pruthi, N., R. Pujahari, P., Putschke, J., Raniwala, R., Raniwala, S., L. Ray, R., Redwine, R., Reed, R., M. Rehberg, J., G. Ritter, H., B. Roberts, J., V. Rogachevskiy, O., L. Romero, J., Rose, A., Roy, C., Ruan, L., J. Russcher, M., Sahoo, R., Sakai, S., Sakrejda, I., Sakuma, T., Salur, S., Sandweiss, J., Sangaline, E., Schambach, J., P. Scharenberg, R., Schmitz, N., R. Schuster, T., Seele, J., Seger, J., Selyuzhenkov, I., Seyboth, P., Shahaliev, E., Shao, M., Sharma, M., Shi, S.S., P. Sichtermann, E., Simon, F., N. Singaraju, R., J. Skoby, M., Smirnov, N., Sorensen, P., Sowinski, J., M. Spinka, H., Srivastava, B., D. S. Stanislaus, T., Staszak, D., R. Stevens, J., Stock, R., Strikhanov, M., Stringfellow, B., A. P. Suaide, A., C. Suarez, M., L. Subba, N., Sumbera, M., M. Sun, X., Sun, Y., Sun, Z., Surrow, B., J. M. Symons, T., Szanto De Toledo, A., Takahashi, J., H. Tang, A., Tang, Z., H. Tarini, L., Tarnowsky, T., Thein, D., H. Thomas, J., Tian, J., R. Timmins, A., Timoshenko, S., Tlusty, D., Tokarev, M., Trainor, T.A., N. Tram, V., Trentalange, S., E. Tribble, R., D. Tsai, O., Ulery, J., Ullrich, T., G. Underwood, D., Van Buren, G., Van Nieuwenhuizen, G., A. Vanfossen, J., Varma, R., M. S. Vasconcelos, G., N. Vasiliev, A., Videbaek, F., P. Viyogi, Y., Vokal, S., Voloshin, S.A., Wada, M., Walker, M., Wang, F., Wang, Gang, Wang, H., S. Wang, J., Wang, Q., Wang, X., L. Wang, X., Wang, Y., Webb, G., C. Webb, J., D. Westfall, G., Whitten Jr., C., Wieman, H., Wing_eld, E., W. Wissink, S., Witt, R., Wu, Y., Xie, W., Xu, N., H. Xu, Q., Xu, Wei-Jiang, Xu, Y., Xu, Z., Xue, L., Yang, Y., Yepes, P., Yip, K., Yoo, I.-K., Yue, Q., Zawisza, M., Zbroszczyk, H., Zhan, W., Zhang, S., M. Zhang, W., P. Zhang, X., Zhang, Y., P. Zhang, Z., Zhao, J., Zhong, C., Zhou, J., Zhou, W., Zhu, X., H. Zhu, Y., Zoulkarneev, R., Zoulkarneeva, Y.
Přispěvatelé: Laboratoire SUBATECH Nantes (SUBATECH), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes), STAR
Jazyk: angličtina
Rok vydání: 2010
Předmět:
Zdroj: Physical Review C
Physical Review C, American Physical Society, 2010, 81, pp.064904. ⟨10.1103/PhysRevC.81.064904⟩
ISSN: 2469-9985
2469-9993
Popis: We report a measurement of high-p_T inclusive pi^0, eta, and direct photon production in p+p and d+Au collisions at sqrt(s_NN) = 200 GeV at midrapidity (0 < eta < 1). Photons from the decay pi^0 -> gamma gamma were detected in the Barrel Electromagnetic Calorimeter of the STAR experiment at the Relativistic Heavy Ion Collider. The eta -> gamma gamma decay was also observed and constituted the first eta measurement by STAR. The first direct photon cross section measurement by STAR is also presented, the signal was extracted statistically by subtracting the pi^0, eta, and omega(782) decay background from the inclusive photon distribution observed in the calorimeter. The analysis is described in detail, and the results are found to be in good agreement with earlier measurements and with next-to-leading order perturbative QCD calculations.
28 pages, 30 figures, 6 tables, the updated version that was accepted by Phys. Rev. C
Databáze: OpenAIRE