Measurement of Longitudinal Spin Asymmetries for Weak Boson Production in Polarized Proton-Proton Collisions at RHIC
L. AdamczykAGH University of Science and Technology, Cracow 30-059, PolandJ. K. AdkinsUniversity of Kentucky, Lexington, Kentucky 40506-0055, USAG. AgakishievJoint Institute for Nuclear Research, Dubna 141 980, RussiaM. M. AggarwalPanjab University, Chandigarh 160014, IndiaZ. AhammedVariable Energy Cyclotron Centre, Kolkata 700064, IndiaI. AlekseevAlikhanov Institute for Theoretical and Experimental Physics, Moscow 117218, RussiaJ. AlfordKent State University, Kent, Ohio 44242, USAC. AnsonOhio State University, Columbus, Ohio 43210, USAA. AparinJoint Institute for Nuclear Research, Dubna 141 980, RussiaD. ArkhipkinBrookhaven National Laboratory, Upton, New York 11973, USAE. C. AschenauerBrookhaven National Laboratory, Upton, New York 11973, USAG. S. AverichevJoint Institute for Nuclear Research, Dubna 141 980, RussiaJ. BalewskiMassachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, USAA. BanerjeeVariable Energy Cyclotron Centre, Kolkata 700064, IndiaD. R. BeavisBrookhaven National Laboratory, Upton, New York 11973, USAR. BellwiedUniversity of Houston, Houston, Texas 77204, USAA. BhasinUniversity of Jammu, Jammu 180001, IndiaA. K. BhatiPanjab University, Chandigarh 160014, IndiaP. BhattaraiUniversity of Texas, Austin, Texas 78712, USAH. BichselUniversity of Washington, Seattle, Washington 98195, USAJ. BielčíkCzech Technical University in Prague, FNSPE, Prague 115 19, Czech RepublicJ. BielčíkováNuclear Physics Institute AS CR, 250 68 Řež/Prague, Czech RepublicL. C. BlandBrookhaven National Laboratory, Upton, New York 11973, USAI. G. BordyuzhinAlikhanov Institute for Theoretical and Experimental Physics, Moscow 117218, RussiaW. BorowskiSUBATECH, Nantes 44307, FranceJ. BouchetKent State University, Kent, Ohio 44242, USAA. V. BrandinMoscow Engineering Physics Institute, Moscow 115409, RussiaS. G. BrovkoUniversity of California, Davis, California 95616, USAS. BültmannOld Dominion University, Norfolk, Virginia 23529, USAI. BunzarovJoint Institute for Nuclear Research, Dubna 141 980, RussiaT. P. BurtonBrookhaven National Laboratory, Upton, New York 11973, USAJ. M. ButterworthRice University, Houston, Texas 77251, USAH. CainesYale University, New Haven, Connecticut 06520, USAM. Calderon De La Barca SanchezUniversity of California, Davis, California 95616, USAJ. M. CampbellOhio State University, Columbus, Ohio 43210, USAD. CebraUniversity of California, Davis, California 95616, USAR. CendejasPennsylvania State University, University Park, Pennsylvania 16802, USAM. C. CervantesTexas A&M University, College Station, Texas 77843, USAP. ChaloupkaCzech Technical University in Prague, FNSPE, Prague 115 19, Czech RepublicZ. ChangTexas A&M University, College Station, Texas 77843, USAS. ChattopadhyayVariable Energy Cyclotron Centre, Kolkata 700064, IndiaH.F. ChenUniversity of Science and Technology of China, Hefei 230026, ChinaJ. H. ChenShanghai Institute of Applied Physics, Shanghai 201800, ChinaLongjie ChenCentral China Normal University (HZNU), Wuhan 430079, ChinaJ. ChengTsinghua University, Beijing 100084, ChinaM. CherneyCreighton University, Omaha, Nebraska 68178, USAA. ChikanianYale University, New Haven, Connecticut 06520, USAW. ChristieBrookhaven National Laboratory, Upton, New York 11973, USAJ. J. ChwastowskiCracow University of Technology, Cracow 31-155, PolandM. J. M. CodringtonUniversity of Texas, Austin, Texas 78712, USAG. ContinLawrence Berkeley National Laboratory, Berkeley, California 94720, USAJ. G. CramerUniversity of Washington, Seattle, Washington 98195, USAH. J. CrawfordUniversity of California, Berkeley, California 94720, USAX.Y. CuiUniversity of Science and Technology of China, Hefei 230026, ChinaS. DasInstitute of Physics, Bhubaneswar 751005, IndiaA. Davila LeyvaUniversity of Texas, Austin, Texas 78712, USAL. C. De SilvaCreighton University, Omaha, Nebraska 68178, USAR. R. DebbeBrookhaven National Laboratory, Upton, New York 11973, USAT. G. DedovichJoint Institute for Nuclear Research, Dubna 141 980, RussiaJ. DengShandong University, Jinan, Shandong 250100, ChinaA. A. DerevschikovInstitute of High Energy Physics, Protvino 142281, RussiaR. Derradi de SouzaUniversidade Estadual de Campinas, Sao Paulo 13131, BrazilS. DhamijaIndiana University, Bloomington, Indiana 47408, USAB. Di RuzzaBrookhaven National Laboratory, Upton, New York 11973, USAL. DidenkoBrookhaven National Laboratory, Upton, New York 11973, USAC. DilksPennsylvania State University, University Park, Pennsylvania 16802, USAF. DingUniversity of California, Davis, California 95616, USAP. DjawothoTexas A&M University, College Station, Texas 77843, USAX. DongLawrence Berkeley National Laboratory, Berkeley, California 94720, USAJ. L. DrachenbergValparaiso University, Valparaiso, Indiana 46383, USAJ. E. DraperUniversity of California, Davis, California 95616, USAC. M. DuInstitute of Modern Physics, Lanzhou 730000, ChinaL. E. DunkelbergerUniversity of California, Los Angeles, California 90095, USAJ. C. DunlopBrookhaven National Laboratory, Upton, New York 11973, USAL. G. EfimovJoint Institute for Nuclear Research, Dubna 141 980, RussiaJ. EngelageUniversity of California, Berkeley, California 94720, USAK. S. EngleUnited States Naval Academy, Annapolis, Maryland 21402, USAG. EppleyRice University, Houston, Texas 77251, USAL. EunLawrence Berkeley National Laboratory, Berkeley, California 94720, USAO. EvdokimovUniversity of Illinois at Chicago, Chicago, Illinois 60607, USAO. EyserBrookhaven National Laboratory, Upton, New York 11973, USAR. FatemiUniversity of Kentucky, Lexington, Kentucky 40506-0055, USAS. FazioBrookhaven National Laboratory, Upton, New York 11973, USAJ. FedorišinJoint Institute for Nuclear Research, Dubna 141 980, RussiaP. FilipJoint Institute for Nuclear Research, Dubna 141 980, RussiaE. FinchYale University, New Haven, Connecticut 06520, USAY. FisyakBrookhaven National Laboratory, Upton, New York 11973, USAC. E. FloresUniversity of California, Davis, California 95616, USAC. A. GagliardiTexas A&M University, College Station, Texas 77843, USAD. R. GangadharanOhio State University, Columbus, Ohio 43210, USAD. GarandPurdue University, West Lafayette, Indiana 47907, USAF. J. M. GeurtsRice University, Houston, Texas 77251, USAS. M. GibsonValparaiso University, Valparaiso, Indiana 46383, USAM. GirardWarsaw University of Technology, Warsaw 00-661, PolandS. GliskeArgonne National Laboratory, Argonne, Illinois 60439, USAL. GreinerLawrence Berkeley National Laboratory, Berkeley, California 94720, USAD. GrosnickValparaiso University, Valparaiso, Indiana 46383, USAD. S. GunarathneTemple University, Philadelphia, Pennsylvania 19122, USAY. GuoUniversity of Science and Technology of China, Hefei 230026, ChinaA. GuptaUniversity of Jammu, Jammu 180001, India
2014en
ABI
Аннотация
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.
Перевод пока недоступен
Идентификаторы
Цитирования и источники
Цитирований: 2Использованных источников: 0