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Phys Rev Lett. 2010 Nov 12;105(20):202301. doi: 10.1103/PhysRevLett.105.202301. Epub 2010 Nov 12.

Measurement of the bottom quark contribution to nonphotonic electron production in p + p collisions at √s=200  GeV.

Physical review letters

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

Affiliations

  1. Panjab University, Chandigarh 160014, India.

PMID: 21231222 DOI: 10.1103/PhysRevLett.105.202301

Abstract

The contribution of B meson decays to nonphotonic electrons, which are mainly produced by the semileptonic decays of heavy-flavor mesons, in p + p collisions at √s=200  GeV has been measured using azimuthal correlations between nonphotonic electrons and hadrons. The extracted B decay contribution is approximately 50% at a transverse momentum of pT≥5  GeV/c. These measurements constrain the nuclear modification factor for electrons from B and D meson decays. The result indicates that B meson production in heavy ion collisions is also suppressed at high pT.

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