6533b7d3fe1ef96bd1261220

RESEARCH PRODUCT

Cross Section and Parity-Violating Spin Asymmetries ofW±Boson Production in Polarizedp+pCollisions ats=500  GeV

M. KasaiA. DeshpandeB. MeredithAlice MignereyJohn HillToru SugitateL. D'orazioM. SarsourMate CsanadFrançois FleuretD. WatanabeA. IordanovaT. IchiharaTakahiro FusayasuAlexander MalakhovD. SilvermyrL. S. ZolinA. YanovichTakao SakaguchiM. MendozaS. N. WhiteE. VznuzdaevY. J. KwonDeepa ThomasMarisilvia DonadelliV. BumazhnovZvi Hirsh CitronK. NakanoW. E. SondheimD. IvanischevK. BoyleP. A. RukoyatkinD. KotovDmitry BlauE. J. DesmondM. OuchidaN. MeansA. D. FrawleyM. NihashiAlexander MilovI. NakagawaAtsushi TakaharaAaron AngeramiHongfang LiuR. TanabeYoung-ki KimT. EngelmoreT. MurakamiD. E. FieldsB. LoveJ. S. KangK. A. DreesS. HuangY. L. YamaguchiY. WatanabeJason KaminM. TogawaE. Vazquez-zambranoW. A. ZajcM. RosatiK. B. LeeB. V. JacakR. S. TowellI. RavinovichY. IkedaY. IkedaV. BaublisI. YounusS. P. StollA. DenisovC. HarperE. J. MannelE. R. KinneyV. CiancioloT. KempelD. P. MorrisonA. G. LitvinenkoW. HolzmannS. KanetiH. PeiS. CampbellS. SawadaY. MiyachiY. TsuchimotoSergey FokinY. IwanagaB. H. KangI. GarishviliT. CsörgőF. WeiR. P. PisaniM. BaiV. S. PantuevJ. YingA. FranzS. S.e. RosendahlG. BunceRushan HanA. DionM. I. NagyMaya Hachiya ShimomuraR. S. HollisI. E. YushmanovM. KurosawaH. W. Van HeckeA. EnokizonoH. Al-ta'aniTatsuya ChujoB. AzmounA. KrálJiangyong JiaJiangyong JiaY. GotoY. I. MakdisiR. AkimotoJohannes Peter WesselsE. C. AschenauerM. MccumberI. TserruyaJ. HamblenVladimir SamsonovM. NaglisR. SetoSenta GreeneD. RoachD. JouanC. L. WoodyA. BerdnikovYu. EfremenkoPrashant ShuklaK. V. DharmawardaneP. L. McgaugheyK. M. KijimaH. QuV. SinghM. GoninC. PinkenburgA. T. BasyeA. KissS. F. PateA. CaringiC. Y. ChiHideki HamagakiK. AokiG. DavidKe. NakamuraK. S. SimB. FademE. O'brienM. ChiuK. HashimotoA. DattaD. KleinjanEric AppeltM. J. TannenbaumK. R. AndrewsR. A. SoltzK. OkadaBeomkyu KimO. DrapierB. SahlmuellerY. FukaoHenner BueschingH. IinumaC. A. OgilvieXingguo LiZhiying YouZhiying YouR. YangR. BennettR. ArmendarizKisung LeeT. K. HemmickAjit Kumar MohantyY. J. MaoH. ToriiM. Grosse PerdekampH. En'yoMasayasu IshiharaJ. HanksK. N. BarishSung Keun ParkM. J. LeitchT. HesterJ. M. DurhamM. E. ConnorsYasuo MiakeK. WatanabeYosuke WatanabeT. A. ShibataC. L. SilvaS. P. SorensenS. TanejaK. ShojiT. SatoA. V. KazantsevE. TennantL. GuoJ. L. NagleP. CasteraAlexei KhanzadeevM. FingerS. DairakuN. N. AjitanandX. GongL. KochendaM. IssahA. GlennI. V. SourikovaK. ImaiE. StenlundS. SanoJ. H. KangJ. S. HaggertyS. R. LeeJ. B. ChoiO. ChvalaI. J. ChoiI. J. ChoiP. W. StankusL. A. Linden LevyD. KawallEunja KimM. SavastioL. TomášekS. MotschwillerH. A. GustafssonD. IsenhowerJan RakR. LaceyTakahiro NakamuraV. PapavassiliouK. UtsunomiyaJen-chieh PengR. PakJ. G. LajoieT. JonesRyugo S. HayanoR. Granier De CassagnacPeter ChristiansenH. ThemannM. L. BrooksY. RiabovA. AdareD. McglincheyAgneta OskarssonD. WinterJ. E. FrantzX. HeKenta ShigakiM. ViriusCharles MaguireD. Yu PeressounkoY. BerdnikovY. AkibaC. MckinneyM. NguyenInkyu ParkY. AramakiV. PeresedovN. GrauXiong WangRobert VertesiE. M. TakaguiByoungchoo ParkKazuyoshi KuritaTaku GunjiZ. Conesa Del ValleT. V. MoukhanovaO. DietzschJ. MurataC. BaumannK. KaratsuA. DurumJ. Ben-benjaminD. HornbackS. NagamiyaViktor RiabovGerd Joachim KundeDong Jo KimJ. KosterC. OakleyT. C. AwesKyoichiro OzawaA. DreesJ. S. BokY. HoriAnne Marie SicklesC. P. SinghA. S. NyaninCatherine Micaela SilvestreVaclav VrbaKlaus Johannes ReygersY. S. LaiRui WeiB. M. JohnsonMotoi InabaH. MasuiS. H. LeeS. ButsykI. SheinR. J. PettiA. VeichtR. M. WrightK. SedgwickA. IsupovRachid NouicerKiyoshi TanidaKiyoshi TanidaS. ZhouM. OkaA. N. ZelenskiM. ProisslC. H. ChenG. R. YoungA. SukhanovJ. SziklaiH. PereiraMinghui LiuS. D. RolnickA. ManionE. KistenevJ. S. YooBrian ColeM. K. DayanandaJulia VelkovskaY. MorinoKenneth Francis ReadKenneth Francis ReadM. WysockiP. KlineB. BannierP. LichtenwalnerT. SodreJongmin LeeJ. SunS. YokkaichiAtsushi TaketaniY. TanakaD. LynchMartin PurschkeH. J. MoonD. BroxmeyerA. MorrealeR. K. ChoudhuryK. S. JooN. ApadulaA. VossenS. EsumiD. SharmaJ. T. MitchellR. IchimiyaR. SeidlVladislav MankoM. SlunečkaC. ValeS. AfanasievChristine Angela AidalaS. BatheKensuke HommaE. RichardsonJ. NewbyG. RocheK. I. HahnB. BassalleckM. KonnoY. NakamiyaY. J. KimA. TaranenkoKazushi MikiT. HoraguchiBrajesh K. SinghS. TarafdarEva HaslumB. KomkovNorio SaitoTsutomu MibeM. A. L. LeiteH. H. ShimS. H. LimR. BelmontJ. S. KapustinskyV. BabintsevX. JiangM. TomášekG. S. KyleJames AlexanderByung-sik HongA. BazilevskyAlexandre LebedevD. M. Lee

subject

QuarkPhysicsParticle physicsAntiparticle010308 nuclear & particles physicsGeneral Physics and AstronomyElementary particleAstrophysics::Cosmology and Extragalactic AstrophysicsFermion01 natural sciences7. Clean energyNuclear physicsPositronAntimatter0103 physical sciencesHigh Energy Physics::ExperimentNuclear Experiment010306 general physicsBosonLepton

description

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.

yearjournalcountryeditionlanguage
2011-02-11Physical Review Letters
https://doi.org/10.1103/physrevlett.106.062001