Measurement of longitudinal spin asymmetries for weak boson production in polarized proton-proton collisions at RHIC.

نویسندگان

  • L Adamczyk
  • J K Adkins
  • G Agakishiev
  • M M Aggarwal
  • Z Ahammed
  • I Alekseev
  • J Alford
  • C D Anson
  • A Aparin
  • D Arkhipkin
  • E C Aschenauer
  • G S Averichev
  • J Balewski
  • A Banerjee
  • D R Beavis
  • R Bellwied
  • A Bhasin
  • A K Bhati
  • P Bhattarai
  • H Bichsel
  • J Bielcik
  • J Bielcikova
  • L C Bland
  • I G Bordyuzhin
  • W Borowski
  • J Bouchet
  • A V Brandin
  • S G Brovko
  • S Bültmann
  • I Bunzarov
  • T P Burton
  • J Butterworth
  • H Caines
  • M Calderón de la Barca Sánchez
  • J M Campbell
  • D Cebra
  • R Cendejas
  • M C Cervantes
  • P Chaloupka
  • Z Chang
  • S Chattopadhyay
  • H F Chen
  • J H Chen
  • L Chen
  • J Cheng
  • M Cherney
  • A Chikanian
  • W Christie
  • J Chwastowski
  • M J M Codrington
  • G Contin
  • J G Cramer
  • H J Crawford
  • X Cui
  • S Das
  • A Davila Leyva
  • L C De Silva
  • R R Debbe
  • T G Dedovich
  • J Deng
  • A A Derevschikov
  • R Derradi de Souza
  • S Dhamija
  • B di Ruzza
  • L Didenko
  • C Dilks
  • F Ding
  • P Djawotho
  • X Dong
  • J L Drachenberg
  • J E Draper
  • C M Du
  • L E Dunkelberger
  • J C Dunlop
  • L G Efimov
  • J Engelage
  • K S Engle
  • G Eppley
  • L Eun
  • O Evdokimov
  • O Eyser
  • R Fatemi
  • S Fazio
  • J Fedorisin
  • P Filip
  • E Finch
  • Y Fisyak
  • C E Flores
  • C A Gagliardi
  • D R Gangadharan
  • D Garand
  • F Geurts
  • A Gibson
  • M Girard
  • S Gliske
  • L Greiner
  • D Grosnick
  • D S Gunarathne
  • Y Guo
  • A Gupta
  • S Gupta
  • W Guryn
  • B Haag
  • A Hamed
  • L-X Han
  • R Haque
  • J W Harris
  • S Heppelmann
  • A Hirsch
  • G W Hoffmann
  • D J Hofman
  • S Horvat
  • B Huang
  • H Z Huang
  • X Huang
  • P Huck
  • T J Humanic
  • G Igo
  • W W Jacobs
  • H Jang
  • E G Judd
  • S Kabana
  • D Kalinkin
  • K Kang
  • K Kauder
  • H W Ke
  • D Keane
  • A Kechechyan
  • A Kesich
  • Z H Khan
  • D P Kikola
  • I Kisel
  • A Kisiel
  • D D Koetke
  • T Kollegger
  • J Konzer
  • I Koralt
  • L K Kosarzewski
  • L Kotchenda
  • A F Kraishan
  • P Kravtsov
  • K Krueger
  • I Kulakov
  • L Kumar
  • R A Kycia
  • M A C Lamont
  • J M Landgraf
  • K D Landry
  • J Lauret
  • A Lebedev
  • R Lednicky
  • J H Lee
  • M J LeVine
  • C Li
  • W Li
  • X Li
  • X Li
  • Y Li
  • Z M Li
  • M A Lisa
  • F Liu
  • T Ljubicic
  • W J Llope
  • M Lomnitz
  • R S Longacre
  • X Luo
  • G L Ma
  • Y G Ma
  • D M M D Madagodagettige Don
  • D P Mahapatra
  • R Majka
  • S Margetis
  • C Markert
  • H Masui
  • H S Matis
  • D McDonald
  • T S McShane
  • N G Minaev
  • S Mioduszewski
  • B Mohanty
  • M M Mondal
  • D A Morozov
  • M K Mustafa
  • B K Nandi
  • Md Nasim
  • T K Nayak
  • J M Nelson
  • G Nigmatkulov
  • L V Nogach
  • S Y Noh
  • J Novak
  • S B Nurushev
  • G Odyniec
  • A Ogawa
  • K Oh
  • A Ohlson
  • V Okorokov
  • E W Oldag
  • D L Olvitt
  • M Pachr
  • B S Page
  • S K Pal
  • Y X Pan
  • Y Pandit
  • Y Panebratsev
  • T Pawlak
  • B Pawlik
  • H Pei
  • C Perkins
  • W Peryt
  • P Pile
  • M Planinic
  • J Pluta
  • N Poljak
  • K Poniatowska
  • J Porter
  • A M Poskanzer
  • N K Pruthi
  • M Przybycien
  • P R Pujahari
  • J Putschke
  • H Qiu
  • A Quintero
  • S Ramachandran
  • R Raniwala
  • S Raniwala
  • R L Ray
  • C K Riley
  • H G Ritter
  • J B Roberts
  • O V Rogachevskiy
  • J L Romero
  • J F Ross
  • A Roy
  • L Ruan
  • J Rusnak
  • O Rusnakova
  • N R Sahoo
  • P K Sahu
  • I Sakrejda
  • S Salur
  • J Sandweiss
  • E Sangaline
  • A Sarkar
  • J Schambach
  • R P Scharenberg
  • A M Schmah
  • W B Schmidke
  • N Schmitz
  • J Seger
  • P Seyboth
  • N Shah
  • E Shahaliev
  • P V Shanmuganathan
  • M Shao
  • B Sharma
  • W Q Shen
  • S S Shi
  • Q Y Shou
  • E P Sichtermann
  • R N Singaraju
  • M J Skoby
  • D Smirnov
  • N Smirnov
  • D Solanki
  • P Sorensen
  • H M Spinka
  • B Srivastava
  • T D S Stanislaus
  • J R Stevens
  • R Stock
  • M Strikhanov
  • B Stringfellow
  • M Sumbera
  • X Sun
  • X M Sun
  • Y Sun
  • Z Sun
  • B Surrow
  • D N Svirida
  • T J M Symons
  • M A Szelezniak
  • J Takahashi
  • A H Tang
  • Z Tang
  • T Tarnowsky
  • J H Thomas
  • A R Timmins
  • D Tlusty
  • M Tokarev
  • S Trentalange
  • R E Tribble
  • P Tribedy
  • B A Trzeciak
  • O D Tsai
  • J Turnau
  • T Ullrich
  • D G Underwood
  • G Van Buren
  • G van Nieuwenhuizen
  • M Vandenbroucke
  • J A Vanfossen
  • R Varma
  • G M S Vasconcelos
  • A N Vasiliev
  • R Vertesi
  • F Videbæk
  • Y P Viyogi
  • S Vokal
  • A Vossen
  • M Wada
  • F Wang
  • G Wang
  • H Wang
  • J S Wang
  • X L Wang
  • Y Wang
  • Y Wang
  • G Webb
  • J C Webb
  • G D Westfall
  • H Wieman
  • S W Wissink
  • R Witt
  • Y F Wu
  • Z Xiao
  • W Xie
  • K Xin
  • H Xu
  • J Xu
  • N Xu
  • Q H Xu
  • Y Xu
  • Z Xu
  • W Yan
  • C Yang
  • Y Yang
  • Y Yang
  • Z Ye
  • P Yepes
  • L Yi
  • K Yip
  • I-K Yoo
  • N Yu
  • Y Zawisza
  • H Zbroszczyk
  • W Zha
  • J B Zhang
  • J L Zhang
  • S Zhang
  • X P Zhang
  • Y Zhang
  • Z P Zhang
  • F Zhao
  • J Zhao
  • C Zhong
  • X Zhu
  • Y H Zhu
  • Y Zoulkarneeva
  • M Zyzak
چکیده

We report measurements of single- and double-spin asymmetries for W^{±} and Z/γ^{*} boson production in longitudinally polarized p+p collisions at sqrt[s]=510  GeV by the STAR experiment at RHIC. The asymmetries for W^{±} were measured as a function of the decay lepton pseudorapidity, which provides a theoretically clean probe of the proton's polarized quark distributions at the scale of the W mass. The results are compared to theoretical predictions, constrained by polarized deep inelastic scattering measurements, and show a preference for a sizable, positive up antiquark polarization in the range 0.05<x<0.2.

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عنوان ژورنال:
  • Physical review letters

دوره 113 7  شماره 

صفحات  -

تاریخ انتشار 2014