Measurement of the Parity-Violating Longitudinal Single-Spin Asymmetry for W[superscript ±] Boson Production in Polarized Proton-Proton Collisions at [sqrt]s=500  GeV

Aggarwal, M.; Ahammed, Z.; Alakhverdyants, A.; Alekseev, I.; Alford, J.; Anderson, B.; Anson, C.; Arkhipkin, D.; Averichev, G.; Balewski, J.; Beavis, D.; Bellwied, R.; Betancourt, M.; Betts, R.; Bhasin, A.; Bhati, A.; Bichsel, H.; Bielcik, J.; Bielcikova, J.; Biritz, B.; Bland, L.; Borowski, W.; Bouchet, J.; Braidot, E.; Brandin, A.; Bridgeman, A.; Brovko, S.; Bruna, E.; Bueltmann, S.; Bunzarov, I.; Burton, T.; Cai, X.; Caines, H.; Calderón de la Barca Sánchez, M.; Cebra, D.; Cendejas, R.; Cervantes, M.; Chajecki, Z.; Chaloupka, P.; Chattopadhyay, S.; Chen, H.; Chen, J.; Chen, J.; Cheng, J.; Cherney, M.; Chikanian, A.; Choi, K.; Christie, W.; Chung, P.; Codrington, M.; Corliss, R.; Cramer, J.; Crawford, H.; Dash, S.; Davila Leyva, A.; De Silva, L.; Debbe, R.; Dedovich, T.; Derevschikov, A.; Derradi de Souza, R.; Didenko, L.; Djawotho, P.; Dogra, S.; Dong, X.; Drachenberg, J.; Draper, J.; Dunlop, J.; Dutta Mazumdar, M.; Efimov, L.; Elnimr, M.; Engelage, J.; Eppley, G.; Erazmus, B.; Estienne, M.; Eun, L.; Evdokimov, O.; Fatemi, R.; Fedorisin, J.; Fersch, R.; Finch, E.; Fine, V.; Fisyak, Y.; Gagliardi, C.; Gangadharan, D.; Ganti, M.; Geromitsos, A.; Geurts, F.; Ghosh, P.; Gorbunov, Y.; Gordon, A.; Grebenyuk, O.; Grosnick, D.; Guertin, S.; Gupta, A.; Guryn, W.; Haag, B.; Hamed, A.; Han, L-X.; Harris, J.; Hays-Wehle, J.; Heinz, M.; Heppelmann, S.; Hirsch, A.; Hjort, E.; Hoffmann, G.; Hofman, D.; Huang, B.; Huang, H.; Humanic, T.; Huo, L.; Igo, G.; Jacobs, P.; Jacobs, W.; Jena, C.; Jin, F.; Joseph, J.; Judd, E.; Kabana, S.; Kang, K.; Kapitan, J.; Kauder, K.; Keane, D.; Kechechyan, A.; Kettler, D.; Kikola, D.; Kiryluk, J.; Kisiel, A.; Kizka, V.; Klein, S.; Knospe, A.; Kocoloski, A.; Koetke, D.; Kollegger, T.; Konzer, J.; Koralt, I.; Koroleva, L.; Korsch, W.; Kotchenda, L.; Kouchpil, V.; Kravtsov, P.; Krueger, K.; Krus, M.; Kumar, L.; Kurnadi, P.; Lamont, M.; Landgraf, J.; LaPointe, S.; Lauret, J.; Lebedev, A.; Lednicky, R.; Lee, C-H.; Lee, J.; Leight, W.; LeVine, M.; Li, C.; Li, L.; Li, N.; Li, W.; Li, X.; Li, X.; Li, Y.; Li, Z.; Lisa, M.; Liu, F.; Liu, H.; Liu, J.; Ljubicic, T.; Llope, W.; Longacre, R.; Love, W.; Lu, Y.; Lukashov, E.; Luo, X.; Ma, G.; Ma, Y.; Mahapatra, D.; Majka, R.; Mall, O.; Mangotra, L.; Manweiler, R.; Margetis, S.; Markert, C.; Masui, H.; Matis, H.; Matulenko, Yu.; McDonald, D.; McShane, T.; Meschanin, A.; Milner, R.; Minaev, N.; Mioduszewski, S.; Mischke, A.; Mitrovski, M.; Mohanty, B.; Mondal, M.; Morozov, B.; Morozov, D.; Munhoz, M.; Naglis, M.; Nandi, B.; Nayak, T.; Netrakanti, P.; Ng, M.; Nogach, L.; Nurushev, S.; Odyniec, G.; Ogawa, A.; Ohlson, A.; Okorokov, V.; Oldag, E.; Olson, D.; Pachr, M.; Page, B.; Pal, S.; Pandit, Y.; Panebratsev, Y.; Pawlak, T.; Peitzmann, T.; Perkins, C.; Peryt, W.; Phatak, S.; Pile, P.; Planinic, M.; Ploskon, M.; Pluta, J.; Plyku, D.; Poljak, N.; Poskanzer, A.; Potukuchi, B.; Powell, C.; Prindle, D.; Pruneau, C.; Pruthi, N.; Pujahari, P.; Putschke, J.; Qiu, H.; Raniwala, R.; Raniwala, S.; Ray, R.; Redwine, R.; Reed, R.; Ritter, H.; Roberts, J.; Rogachevskiy, O.; Romero, J.; Rose, A.; Ruan, L.; Sakai, S.; Sakrejda, I.; Sakuma, T.; Salur, S.; Sandweiss, J.; Sangaline, E.; Schambach, J.; Scharenberg, R.; Schmah, A.; Schmitz, N.; Schuster, T.; Seele, J.; Seger, J.; Selyuzhenkov, I.; Seyboth, P.; Shahaliev, E.; Shao, M.; Sharma, M.; Shi, S.; Sichtermann, E.; Simon, F.; Singaraju, R.; Skoby, M.; Smirnov, N.; Sorensen, P.; Spinka, H.; Srivastava, B.; Stanislaus, T.; Staszak, D.; Stevens, J.; Stock, R.; Strikhanov, M.; Stringfellow, B.; Suaide, A.; Suarez, M.; Subba, N.; Sumbera, M.; Sun, X.; Sun, Y.; Sun, Z.; Surrow, B.; Svirida, D.; Symons, T.; Szanto de Toledo, A.; Takahashi, J.; Tang, A.; Tang, Z.; Tarini, L.; Tarnowsky, T.; Thein, D.; Thomas, J.; Tian, J.; Timmins, A.; Timoshenko, S.; Tlusty, D.; Tokarev, M.; Trainor, T.; Tram, V.; Trentalange, S.; Tribble, R.; Tsai, O.; Ullrich, T.; Underwood, D.; Van Buren, G.; van Leeuwen, M.; van Nieuwenhuizen, G.; Vanfossen, J.; Varma, R.; Vasconcelos, G.; Vasiliev, A.; Videbæk, F.; Viyogi, Y.; Vokal, S.; Voloshin, S.; Wada, M.; Walker, M.; Wang, F.; Wang, G.; Wang, H.; Wang, J.; Wang, Q.; Wang, X.; Wang, Y.; Webb, G.; Webb, J.; Westfall, G.; Whitten, C.; Wieman, H.; Wissink, S.; Witt, R.; Wu, Y.; Xie, W.; Xu, H.; Xu, N.; Xu, Q.; Xu, W.; Xu, Y.; Xu, Z.; Xue, L.; Yang, Y.; Yepes, P.; Yip, K.; Yoo, I-K.; Yue, Q.; Zawisza, M.; Zbroszczyk, H.; Zhan, W.; Zhang, J.; Zhang, S.; Zhang, W.; Zhang, X.; Zhang, Y.; Zhang, Z.; Zhao, J.; Zhong, C.; Zhou, W.; Zhu, X.; Zhu, Y.; Zoulkarneev, R.; Zoulkarneeva, Y.

Author(s)

Balewski, Jan T.; Betancourt, Michael Joseph; Corliss, Ross Cameron; Hays-Wehle, James Prewitt; Kocoloski, Adam Philip; ... Show more

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Alternative title

Measurement of the Parity-Violating Longitudinal Single-Spin Asymmetry for W± Boson Production in Polarized Proton-Proton Collisions at √s=500 GeV

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Abstract

We report the first measurement of the parity-violating single-spin asymmetries for midrapidity decay positrons and electrons from W+ and W- boson production in longitudinally polarized proton-proton collisions at [sqrt]s=500 GeV by the STAR experiment at RHIC. The measured asymmetries, AL[superscript W+]=-0.27±0.10(stat.)±0.02(syst.)±0.03(norm.) and AL[superscript W-]=0.14±0.19(stat.)±0.02(syst.)±0.01(norm.), are consistent with theory predictions, which are large and of opposite sign. These predictions are based on polarized quark and antiquark distribution functions constrained by polarized deep-inelastic scattering measurements.

Date issued

2011-02

URI

http://hdl.handle.net/1721.1/63107

Department

Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science

Journal

Physical Review Letters

Publisher

American Physical Society

Citation

Aggarwal, M.M. et al. (STAR Collaboration) "Measurement of the Parity-Violating Longitudinal Single-Spin Asymmetry for W± Boson Production in Polarized Proton-Proton Collisions at [sqrt]s=500 GeV." Phys. Rev. Lett. 106, 062002 (2011) [6 pages] © 2011 American Physical Society.

Version: Final published version

ISSN

0031-9007

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