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Cross Section and Parity-Violating Spin Asymmetries of W-+/- Boson Production in Polarized p plus p Collisions at root s=500 Gev

Authors
Adare, A.Afanasiev, S.Aidala, C.Ajitanand, N. N.Akiba, Y.Akimoto, R.Alexander, J.Al-Ta'ani, H.Andrews, K. R.Angerami, A.Aoki, K.Apadula, N.Appelt, E.Aramaki, Y.Armendariz, R.Aschenauer, E. C.Awes, T. C.Azmoun, B.Babintsev, V.Bai, M.Bannier, B.Barish, K. N.Bassalleck, B.Basye, A. T.Bathe, S.Baublis, V.Baumann, C.Bazilevsky, A.Belmont, R.Ben-Benjamin, J.Bennett, R.Berdnikov, A.Berdnikov, Y.Blau, D. S.Bok, J. S.Boyle, K.Brooks, M. L.Broxmeyer, D.Buesching, H.Bumazhnov, V.Bunce, G.Butsyk, S.Campbell, S.Caringi, A.Castera, P.Chen, C. -H.Chi, C. Y.Chiu, M.Choi, I. J.Choi, J. B.Choudhury, R. K.Christiansen, P.Chujo, T.Chvala, O.Cianciolo, V.Citron, Z.Cole, B. A.del Valle, Z. ConesaConnors, M.Csanad, M.Csoergo, T.Dairaku, S.Datta, A.David, G.Dayananda, M. K.Denisov, A.Deshpande, A.Desmond, E. J.Dharmawardane, K. V.Dietzsch, O.Dion, A.Donadelli, M.D'Orazio, L.Drapier, O.Drees, A.Drees, K. A.Durham, J. M.Durum, A.Efremenko, Y. V.Engelmore, T.Enokizono, A.En'yo, H.Esumi, S.Fadem, B.Fields, D. E.Finger, M., Jr.Finger, M.Fleuret, F.Fokin, S. L.Frantz, J. E.Franz, A.Frawley, A. D.Fukao, Y.Fusayasu, T.Garishvili, I.Glenn, A.Gong, X.Gonin, M.Goto, Y.de Cassagnac, R. GranierGrau, N.Greene, S. V.Perdekamp, M. GrosseGunji, T.Guo, L.Gustafsson, H-AHaggerty, J. S.Hahn, K. I.Hamagaki, H.Hamblen, J.Hanks, J.Han, R.Harper, C.Hashimoto, K.Haslum, E.Hayano, R.Hemmick, T. K.Hester, T.He, X.Hill, J. C.Hollis, R. S.Holzmann, W.Homma, K.Hong, B.Horaguchi, T.Hori, Y.Hornback, D.Huang, S.Ichihara, T.Ichimiya, R.Iinuma, H.Ikeda, Y.Imai, K.Inaba, M.Iordanova, A.Isenhower, D.Ishihara, M.Issah, M.Isupov, A.Ivanischev, D.Iwanaga, Y.Jacak, B. V.Jia, J.Jiang, X.Johnson, B. M.Jones, T.Joo, K. S.Jouan, D.Kamin, J.Kaneti, S.Kang, B. H.Kang, J. H.Kang, J. S.Kapustinsky, J.Karatsu, K.Kasai, M.Kawall, D.Kazantsev, A. V.Kempel, T.Khanzadeev, A.Kijima, K. M.Kim, B. I.Kim, D. J.Kim, E. J.Kim, Y. -J.Kim, Y. K.Kinney, E.Kiss, A.Kistenev, E.Kleinjan, D.Kline, P.Kochenda, L.Komkov, B.Konno, M.Koster, J.Kotov, D.Kral, A.Kunde, G. J.Kurita, K.Kurosawa, M.Kwon, Y.Kyle, G. S.Lacey, R.Lai, Y. S.Lajoie, J. G.Lebedev, A.Lee, D. M.Lee, J.Lee, K. B.Lee, K. S.Lee, S. H.Lee, S. R.Leitch, M. J.Leite, M. A. L.Lichtenwalner, P.Lim, S. H.Levy, L. A. LindenLitvinenko, A.Liu, H.Liu, M. X.Li, X.Love, B.Lynch, D.Maguire, C. F.Makdisi, Y. I.Malakhov, A.Manion, A.Manko, V. I.Mannel, E.Mao, Y.Masui, H.McCumber, M.McGaughey, P. L.McGlinchey, D.McKinney, C.Means, N.Mendoza, M.Meredith, B.Miake, Y.Mibe, T.Mignerey, A. C.Miki, K.Milov, A.Mitchell, J. T.Miyachi, Y.Mohanty, A. K.Moon, H. J.Morino, Y.Morreale, A.Morrison, D. P.Motschwiller, S.Moukhanova, T. V.Murakami, T.Murata, J.Nagamiya, S.Nagle, J. L.Naglis, M.Nagy, M. I.Nakagawa, I.Nakamiya, Y.Nakamura, K. R.Nakamura, T.Nakano, K.Newby, J.Nguyen, M.Nihashi, M.Nouicer, R.Nyanin, A. S.Oakley, C.O'Brien, E.Ogilvie, C. A.Okada, K.Oka, M.Oskarsson, A.Ouchida, M.Ozawa, K.Pak, R.Pantuev, V.Papavassiliou, V.Park, B. H.Park, I. H.Park, S. K.Pate, S. F.Pei, H.Peng, J. -C.Pereira, H.Peresedov, V.Peressounko, D. Yu.Petti, R.Pinkenburg, C.Pisani, R. P.Proissl, M.Purschke, M. L.Qu, H.Rak, J.Ravinovich, I.Read, K. F.Reygers, K.Riabov, V.Riabov, Y.Richardson, E.Roach, D.Roche, G.Rolnick, S. D.Rosati, M.Rosendahl, S. S. E.Rukoyatkin, P.Sahlmueller, B.Saito, N.Sakaguchi, T.Samsonov, V.Sano, S.Sarsour, M.Sato, T.Savastio, M.Sawada, S.Sedgwick, K.Seidl, R.Seto, R.Sharma, D.Shein, I.Shibata, T. -A.Shigaki, K.Shim, H. H.Shimomura, M.Shoji, K.Shukla, P.Sickles, A.Silva, C. L.Silvermyr, D.Silvestre, C.Sim, K. S.Singh, B. K.Singh, C. P.Singh, V.Slunecka, M.Sodre, T.Soltz, R. A.Sondheim, W. E.Sorensen, S. P.Sourikova, I. V.Stankus, P. W.Stenlund, E.Stoll, S. P.Sugitate, T.Sukhanov, A.Sun, J.Sziklai, J.Takagui, E. M.Takahara, A.Taketani, A.Tanabe, R.Tanaka, Y.Taneja, S.Tanida, K.Tannenbaum, M. J.Tarafdar, S.Taranenko, A.Tennant, E.Themann, H.Thomas, D.Togawa, M.Tomasek, L.Tomasek, M.Torii, H.Towell, R. S.Tserruya, I.Tsuchimoto, Y.Utsunomiya, K.Vale, C.van Hecke, H. W.Vazquez-Zambrano, E.Veicht, A.Velkovska, J.Vertesi, R.Virius, M.Vossen, A.Vrba, V.Vznuzdaev, E.Wang, X. R.Watanabe, D.Watanabe, K.Watanabe, Y.Watanabe, Y. S.Wei, F.Wei, R.Wessels, J.White, S. N.Winter, D.Woody, C. L.Wright, R. M.Wysocki, M.Yamaguchi, Y. L.Yang, R.Yanovich, A.Ying, J.Yokkaichi, S.Yoo, J. S.Young, G. R.Younus, I.You, Z.Yushmanov, I. E.Zajc, W. A.Zelenski, A.Zhou, S.Zolin, L.
Issue Date
11-2월-2011
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW LETTERS, v.106, no.6
Indexed
SCIE
SCOPUS
Journal Title
PHYSICAL REVIEW LETTERS
Volume
106
Number
6
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/113071
DOI
10.1103/PhysRevLett.106.062001
ISSN
0031-9007
Abstract
Large parity-violating longitudinal single-spin asymmetries A(L)(e+) = 0.86(-0.14)(+0.30) and Ae(L)(e-) = 0.88(-0.71)(+0.12) are observed for inclusive high transverse momentum electrons and positrons in polarized p + p collisions at a center-of-mass energy of root s = 500 GeV with the PHENIX detector at RHIC. These e(+/-) come mainly from the decay of W-+/- and Z(0) bosons, and their asymmetries directly demonstrate parity violation in the couplings of the W-+/- to the light quarks. The observed electron and positron yields were used to estimate W-+/- boson production cross sections for the e(+/-) channels of sigma(pp -> W+X) X BR(W+ -> e(+) nu(e)) = 144.1 +/- 21.2(stat)(-10.3)(+3.4)(syst) +/- 21.6(norm) pb, and sigma(pp -> W-X) X BR(W- -> e(-) (nu) over bar (e)) = 3.17 +/- 12.1(stat)(-8.2)(+10.1)(syst) +/- 4.8(norm) pb.
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