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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

Adare, A.; Afanasiev, S.; Aidala, C.; Ajitanand, N. N.; Akiba, Y.; Akimoto, R.; Alexander, J.; Al-Ta'ani, H.; Andrews, K. R. and Angerami, A., et al. (2011) In Physical Review Letters 106(6).
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)... (More)
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. (Less)
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Physical Review Letters
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106
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6
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American Physical Society
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1079-7114
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10.1103/PhysRevLett.106.062001
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English
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@article{a129c2af-d92f-4a2b-afeb-23a266e8658c,
  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.},
  author       = {Adare, A. and Afanasiev, S. and Aidala, C. and Ajitanand, N. N. and Akiba, Y. and Akimoto, R. and Alexander, J. and Al-Ta'ani, H. and Andrews, K. R. and Angerami, A. and Aoki, K. and Apadula, N. and Appelt, E. and Aramaki, Y. and Armendariz, R. and Aschenauer, E. C. and Awes, T. C. and Azmoun, B. and Babintsev, V. and Bai, M. and Bannier, B. and Barish, K. N. and Bassalleck, B. and Basye, A. T. and Bathe, S. and Baublis, V. and Baumann, C. and Bazilevsky, A. and Belmont, R. and Ben-Benjamin, J. and Bennett, R. and Berdnikov, A. and Berdnikov, Y. and Blau, D. S. and Bok, J. S. and Boyle, K. and Brooks, M. L. and Broxmeyer, D. and Buesching, H. and Bumazhnov, V. and Bunce, G. and Butsyk, S. and Campbell, S. and Caringi, A. and Castera, P. and Chen, C. -H. and Chi, C. Y. and Chiu, M. and Choi, I. J. and Choi, J. B. and Choudhury, R. K. and Christiansen, Peter and Chujo, T. and Chvala, O. and Cianciolo, V. and Citron, Z. and Cole, B. A. and del Valle, Z. Conesa and Connors, M. and Csanad, M. and Csoergo, T. and Dairaku, S. and Datta, A. and David, G. and Dayananda, M. K. and Denisov, A. and Deshpande, A. and Desmond, E. J. and Dharmawardane, K. V. and Dietzsch, O. and Dion, A. and Donadelli, M. and D'Orazio, L. and Drapier, O. and Drees, A. and Drees, K. A. and Durham, J. M. and Durum, A. and Efremenko, Y. V. and Engelmore, T. and Enokizono, A. and En'yo, H. and Esumi, S. and Fadem, B. and Fields, D. E. and Finger, M., Jr. and Finger, M. and Fleuret, F. and Fokin, S. L. and Frantz, J. E. and Franz, A. and Frawley, A. D. and Fukao, Y. and Fusayasu, T. and Garishvili, I. and Glenn, A. and Gong, X. and Gonin, M. and Goto, Y. and de Cassagnac, R. Granier and Grau, N. and Greene, S. V. and Perdekamp, M. Grosse and Gunji, T. and Guo, L. and Gustafsson, Hans-Åke and Haggerty, J. S. and Hahn, K. I. and Hamagaki, H. and Hamblen, J. and Hanks, J. and Han, R. and Harper, C. and Hashimoto, K. and Haslum, Eva and Hayano, R. and Hemmick, T. K. and Hester, T. and He, X. and Hill, J. C. and Hollis, R. S. and Holzmann, W. and Homma, K. and Hong, B. and Horaguchi, T. and Hori, Y. and Hornback, D. and Huang, S. and Ichihara, T. and Ichimiya, R. and Iinuma, H. and Ikeda, Y. and Imai, K. and Inaba, M. and Iordanova, A. and Isenhower, D. and Ishihara, M. and Issah, M. and Isupov, A. and Ivanischev, D. and Iwanaga, Y. and Jacak, B. V. and Jia, J. and Jiang, X. and Johnson, B. M. and Jones, T. and Joo, K. S. and Jouan, D. and Kamin, J. and Kaneti, S. and Kang, B. H. and Kang, J. H. and Kang, J. S. and Kapustinsky, J. and Karatsu, K. and Kasai, M. and Kawall, D. and Kazantsev, A. V. and Kempel, T. and Khanzadeev, A. and Kijima, K. M. and Kim, B. I. and Kim, D. J. and Kim, E. J. and Kim, Y. -J. and Kim, Y. K. and Kinney, E. and Kiss, A. and Kistenev, E. and Kleinjan, D. and Kline, P. and Kochenda, L. and Komkov, B. and Konno, M. and Koster, J. and Kotov, D. and Kral, A. and Kunde, G. J. and Kurita, K. and Kurosawa, M. and Kwon, Y. and Kyle, G. S. and Lacey, R. and Lai, Y. S. and Lajoie, J. G. and Lebedev, A. and Lee, D. M. and Lee, J. and Lee, K. B. and Lee, K. S. and Lee, S. H. and Lee, S. R. and Leitch, M. J. and Leite, M. A. L. and Lichtenwalner, P. and Lim, S. H. and Levy, L. A. Linden and Litvinenko, A. and Liu, H. and Liu, M. X. and Li, X. and Love, B. and Lynch, D. and Maguire, C. F. and Makdisi, Y. I. and Malakhov, A. and Manion, A. and Manko, V. I. and Mannel, E. and Mao, Y. and Masui, H. and McCumber, M. and McGaughey, P. L. and McGlinchey, D. and McKinney, C. and Means, N. and Mendoza, M. and Meredith, B. and Miake, Y. and Mibe, T. and Mignerey, A. C. and Miki, K. and Milov, A. and Mitchell, J. T. and Miyachi, Y. and Mohanty, A. K. and Moon, H. J. and Morino, Y. and Morreale, A. and Morrison, D. P. and Motschwiller, S. and Moukhanova, T. V. and Murakami, T. and Murata, J. and Nagamiya, S. and Nagle, J. L. and Naglis, M. and Nagy, M. I. and Nakagawa, I. and Nakamiya, Y. and Nakamura, K. R. and Nakamura, T. and Nakano, K. and Newby, J. and Nguyen, M. and Nihashi, M. and Nouicer, R. and Nyanin, A. S. and Oakley, C. and O'Brien, E. and Ogilvie, C. A. and Okada, K. and Oka, M. and Oskarsson, Anders and Ouchida, M. and Ozawa, K. and Pak, R. and Pantuev, V. and Papavassiliou, V. and Park, B. H. and Park, I. H. and Park, S. K. and Pate, S. F. and Pei, H. and Peng, J. -C. and Pereira, H. and Peresedov, V. and Peressounko, D. Yu. and Petti, R. and Pinkenburg, C. and Pisani, R. P. and Proissl, M. and Purschke, M. L. and Qu, H. and Rak, J. and Ravinovich, I. and Read, K. F. and Reygers, K. and Riabov, V. and Riabov, Y. and Richardson, E. and Roach, D. and Roche, G. and Rolnick, S. D. and Rosati, M. and Rosendahl, Sarah and Rukoyatkin, P. and Sahlmueller, B. and Saito, N. and Sakaguchi, T. and Samsonov, V. and Sano, S. and Sarsour, M. and Sato, T. and Savastio, M. and Sawada, S. and Sedgwick, K. and Seidl, R. and Seto, R. and Sharma, D. and Shein, I. and Shibata, T. -A. and Shigaki, K. and Shim, H. H. and Shimomura, M. and Shoji, K. and Shukla, P. and Sickles, A. and Silva, C. L. and Silvermyr, D. and Silvestre, C. and Sim, K. S. and Singh, B. K. and Singh, C. P. and Singh, V. and Slunecka, M. and Sodre, T. and Soltz, R. A. and Sondheim, W. E. and Sorensen, S. P. and Sourikova, I. V. and Stankus, P. W. and Stenlund, Evert and Stoll, S. P. and Sugitate, T. and Sukhanov, A. and Sun, J. and Sziklai, J. and Takagui, E. M. and Takahara, A. and Taketani, A. and Tanabe, R. and Tanaka, Y. and Taneja, S. and Tanida, K. and Tannenbaum, M. J. and Tarafdar, S. and Taranenko, A. and Tennant, E. and Themann, H. and Thomas, D. and Togawa, M. and Tomasek, L. and Tomasek, M. and Torii, H. and Towell, R. S. and Tserruya, I. and Tsuchimoto, Y. and Utsunomiya, K. and Vale, C. and van Hecke, H. W. and Vazquez-Zambrano, E. and Veicht, A. and Velkovska, J. and Vertesi, R. and Virius, M. and Vossen, A. and Vrba, V. and Vznuzdaev, E. and Wang, X. R. and Watanabe, D. and Watanabe, K. and Watanabe, Y. and Watanabe, Y. S. and Wei, F. and Wei, R. and Wessels, J. and White, S. N. and Winter, D. and Woody, C. L. and Wright, R. M. and Wysocki, M. and Yamaguchi, Y. L. and Yang, R. and Yanovich, A. and Ying, J. and Yokkaichi, S. and Yoo, J. S. and Young, G. R. and Younus, I. and You, Z. and Yushmanov, I. E. and Zajc, W. A. and Zelenski, A. and Zhou, S. and Zolin, L.},
  issn         = {1079-7114},
  language     = {eng},
  number       = {6},
  publisher    = {American Physical Society},
  series       = {Physical Review Letters},
  title        = {Cross Section and Parity-Violating Spin Asymmetries of W-+/- Boson Production in Polarized p plus p Collisions at root s=500 Gev},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.106.062001},
  volume       = {106},
  year         = {2011},
}