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PMID: 21405459 Published · ppublish English Journal Article

Cross section and parity-violating spin asymmetries of W± boson production in polarized p + p collisions at sqrt[s] = 500 GeV.

Physical review letters ·Vol. 106 ·No. 6 ·2011-02-11 ·Pages 062001

Adare A, Afanasiev S, Aidala C, Ajitanand NN, Akiba Y, Akimoto R, Alexander J, Al-Ta'ani H, Andrews KR, Angerami A, Aoki K, Apadula N, Appelt E, Aramaki Y, Armendariz R, Aschenauer EC, Awes TC, Azmoun B, Babintsev V, Bai M, Bannier B, Barish KN, Bassalleck B, Basye AT, Bathe S, Baublis V, Baumann C, Bazilevsky A, Belmont R, Ben-Benjamin J, Bennett R, Berdnikov A, Berdnikov Y, Blau DS, Bok JS, Boyle K, Brooks ML, Broxmeyer D, Buesching H, Bumazhnov V, Bunce G, Butsyk S, Campbell S, Caringi A, Castera P, Chen CH, Chi CY, Chiu M, Choi IJ, Choi JB, Choudhury RK, Christiansen P, Chujo T, Chvala O, Cianciolo V, Citron Z, Cole BA, Conesa del Valle Z, Connors M, Csanád M, Csörgo T, Dairaku S, Datta A, David G, Dayananda MK, Denisov A, Deshpande A, Desmond EJ, Dharmawardane KV, Dietzsch O, Dion A, Donadelli M, D'Orazio L, Drapier O, Drees A, Drees KA, Durham JM, Durum A, Efremenko YV, Engelmore T, Enokizono A, En'yo H, Esumi S, Fadem B, Fields DE, Finger M, Finger M, Fleuret F, Fokin SL, Frantz JE, Franz A, Frawley AD, Fukao Y, Fusayasu T, Garishvili I, Glenn A, Gong X, Gonin M, Goto Y, Granier de Cassagnac R, Grau N, Greene SV, Grosse Perdekamp M, Gunji T, Guo L, Gustafsson HÅ, Haggerty JS, Hahn KI, Hamagaki H, Hamblen J, Hanks J, Han R, Harper C, Hashimoto K, Haslum E, Hayano R, Hemmick TK, Hester T, He X, Hill JC, Hollis RS, 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 BV, Jia J, Jiang X, Johnson BM, Jones T, Joo KS, Jouan D, Kamin J, Kaneti S, Kang BH, Kang JH, Kang JS, Kapustinsky J, Karatsu K, Kasai M, Kawall D, Kazantsev AV, Kempel T, Khanzadeev A, Kijima KM, Kim BI, Kim DJ, Kim EJ, Kim YJ, Kim YK, Kinney E, Kiss Á, Kistenev E, Kleinjan D, Kline P, Kochenda L, Komkov B, Konno M, Koster J, Kotov D, Král A, Kunde GJ, Kurita K, Kurosawa M, Kwon Y, Kyle GS, Lacey R, Lai YS, Lajoie JG, Lebedev A, Lee DM, Lee J, Lee KB, Lee KS, Lee SH, Lee SR, Leitch MJ, Leite MA, Lichtenwalner P, Lim SH, Linden Levy LA, Litvinenko A, Liu H, Liu MX, Li X, Love B, Lynch D, Maguire CF, Makdisi YI, Malakhov A, Manion A, Manko VI, Mannel E, Mao Y, Masui H, McCumber M, McGaughey PL, McGlinchey D, McKinney C, Means N, Mendoza M, Meredith B, Miake Y, Mibe T, Mignerey AC, Miki K, Milov A, Mitchell JT, Miyachi Y, Mohanty AK, Moon HJ, Morino Y, Morreale A, Morrison DP, Motschwiller S, Moukhanova TV, Murakami T, Murata J, Nagamiya S, Nagle JL, Naglis M, Nagy MI, Nakagawa I, Nakamiya Y, Nakamura KR, Nakamura T, Nakano K, Newby J, Nguyen M, Nihashi M, Nouicer R, Nyanin AS, Oakley C, O'Brien E, Ogilvie CA, Okada K, Oka M, Oskarsson A, Ouchida M, Ozawa K, Pak R, Pantuev V, Papavassiliou V, Park BH, Park IH, Park SK, Pate SF, Pei H, Peng JC, Pereira H, Peresedov V, Peressounko DY, Petti R, Pinkenburg C, Pisani RP, Proissl M, Purschke ML, Qu H, Rak J, Ravinovich I, Read KF, Reygers K, Riabov V, Riabov Y, Richardson E, Roach D, Roche G, Rolnick SD, Rosati M, Rosendahl SS, 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 TA, Shigaki K, Shim HH, Shimomura M, Shoji K, Shukla P, Sickles A, Silva CL, Silvermyr D, Silvestre C, Sim KS, Singh BK, Singh CP, Singh V, Slunečka M, Sodre T, Soltz RA, Sondheim WE, Sorensen SP, Sourikova IV, Stankus PW, Stenlund E, Stoll SP, Sugitate T, Sukhanov A, Sun J, Sziklai J, Takagui EM, Takahara A, Taketani A, Tanabe R, Tanaka Y, Taneja S, Tanida K, Tannenbaum MJ, Tarafdar S, Taranenko A, Tennant E, Themann H, Thomas D, Togawa M, Tomášek L, Tomášek M, Torii H, Towell RS, Tserruya I, Tsuchimoto Y, Utsunomiya K, Vale C, van Hecke HW, Vazquez-Zambrano E, Veicht A, Velkovska J, Vértesi R, Virius M, Vossen A, Vrba V, Vznuzdaev E, Wang XR, Watanabe D, Watanabe K, Watanabe Y, Watanabe YS, Wei F, Wei R, Wessels J, White SN, Winter D, Woody CL, Wright RM, Wysocki M, Yamaguchi YL, Yang R, Yanovich A, Ying J, Yokkaichi S, Yoo JS, Young GR, Younus I, You Z, Yushmanov IE, Zajc WA, Zelenski A, Zhou S, Zolin L, PHENIX Collaboration

Abstract

Large parity-violating longitudinal single-spin asymmetries A(L)(e+) = -0.86(-0.14) (+0.30) and A(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 sqrt[s] = 500 GeV with the PHENIX detector at RHIC. These e± come mainly from the decay of W± and Z0 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 σ(pp → W+ X) × BR(W+ → e+ ν(e)) = 144.1 ± 21.2(stat)(-10.3) (+3.4) (syst) ± 21.6(norm)  pb, and σ(pp → W- X) × BR(W- → e- ν[over ¯](e)) = 31.7 ± 12.1(stat)(-8.2) (+10.1) (syst) ± 4.8(norm)  pb.

Authors & Affiliations
387 authors, click to expand affiliations / ORCID
Adare A
University of Colorado, Boulder, Colorado 80309, USA.
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
Conesa del Valle Z
Connors M
Csanád M
Csörgo 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
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
Granier de Cassagnac R
Grau N
Greene S V
Grosse Perdekamp M
Gunji T
Guo L
Gustafsson H-Å
Haggerty 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 Á
Kistenev E
Kleinjan D
Kline P
Kochenda L
Komkov B
Konno M
Koster J
Kotov D
Král 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
Linden Levy L A
Litvinenko 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
Slunečka 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
Tomášek L
Tomášek 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
Vértesi 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
PHENIX Collaboration
Article Info
Journal
Physical review letters
Abbr.
Phys Rev Lett
ISSN
1079-7114
Published
2011-02-11
Epub
2011-00-11
Pages
062001
Language
English
Region
United States
NLM ID
0401141
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