Longitudinal Double-Spin Asymmetry for Inclusive Jet Production in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mover accent="true"><mml:mi>p</mml:mi><mml:mo>→</mml:mo></mml:mover><mml:mo>+</mml:mo><mml:mover accent="true"><mml:mi>p</mml:mi><mml:mo>→</mml:mo></mml:mover></mml:math>Collisions at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>200</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>GeV</mml:mi></mml:math>
B. I. AbelevUniversity of Illinois at Chicago, Chicago, IL 60607, USAM. M. AggarwalPanjab University, Chandigarh 160014, IndiaZ. AhammedVariable Energy Cyclotron Centre, Kolkata 700064, IndiaB. D. AndersonKent State University, Kent, Ohio 44242, USAD. ArkhipkinParticle Physics Laboratory (JINR), Dubna, RussiaG. S. AverichevLaboratory for High Energy (JINR), Dubna, RussiaY. BaiNIKHEF and Utrecht University, Amsterdam, The NetherlandsJ. BalewskiIndiana University, Bloomington, Indiana 47408, USAO. BarannikovaUniversity of Illinois at Chicago, Chicago, Illinois 60607, USAL. S. BarnbyUniversity of Birmingham, Birmingham, United KingdomJ. BaudotS. BaumgartYale University, New Haven, United StatesV. V. BelagaLaboratory for High Energy (JINR), Dubna, RussiaA. Bellingeri-LaurikainenSUBATECH, Nantes, FranceR. BellwiedWayne State University,F. BenedossoNIKHEF and Utrecht University, Amsterdam, The NetherlandsR. R. BettsUniversity of Illinois at Chicago, Chicago, Illinois 60607, USAS. BhardwajUniversity of Rajasthan, Jaipur 302004, IndiaA. BhasinUniversity of Jammu, Jammu 180001, IndiaA. K. BhatiPanjab University, Chandigarh 160014, IndiaH. BichselUniversity of Washington, Seattle, Washington 98195, USAJ. BielčíkYale University, New Haven, United StatesJ. BielčíkováYale University, New Haven, United StatesL. C. BlandBrookhaven National Laboratory, Upton, New York 11973, USAS.C. BlythLawrence Berkeley National Laboratory, Berkeley, California 94720, USAM. BombaraUniversity of Birmingham, Birmingham, United KingdomB. E. BonnerRice University, Houston, Texas 77251, USAM. BotjeNIKHEF and Utrecht University, Amsterdam, The NetherlandsJ. BouchetSUBATECH, Nantes, FranceA. V. BrandinMoscow Engineering Physics Institute, Moscow RussiaT. P. BurtonUniversity of Birmingham, Birmingham, United KingdomM. BysterskýNuclear Physics Institute AS CR, 250 68 R ez /Prague, Czech RepublicX. Z. CaiShanghai Institute of Applied Physics, Shanghai 201800, ChinaM. Calderon De La Barca SanchezUniversity of California, Davis, Davis, United StatesJ. CallnerUniversity of Illinois at Chicago, Chicago, Illinois 60607, USAO. CatuYale University, New Haven, United StatesD. CebraUniversity of California, Davis, California 95616, USAM. C. CervantesTexas A&M University, College Station, Texas 77843, USAZ. ChajęckiOhio State University, Columbus, Ohio 43210, USAP. ChaloupkaNuclear Physics Institute AS CR, 250 68 R ez /Prague, Czech RepublicS. ChattopadhyayVariable Energy Cyclotron Centre, Kolkata 700064, IndiaH. F. ChenUniversity of Science & Technology of China, Hefei 230026, ChinaJ. H. ChenShanghai Institute of Applied Physics, Shanghai 201800, ChinaJ. Y. ChenShanghai Institute of Applied Physics, Shanghai 201800, ChinaJ. ChengTsinghua University, Beijing 100084, ChinaM. CherneyCreighton University, Omaha, Nebraska 68178, USAA. ChikanianYale University, New Haven, United StatesW. ChristieBrookhaven National Laboratory, Upton, New York 11973, USAS. U. ChungBrookhaven National Laboratory, Upton, New York 11973, USAR. F. ClarkeTexas A&M University, College Station, Texas 77843, USAM. J. M. CodringtonTexas A&M University, College Station, Texas 77843, USAJ. P. CoffinKent State University LibrariesT. M. CormierWayne State University,M. R. CosentinoUniversidade de Sao Paulo, Sao Paulo, BrazilJ. G. CramerUniversity of Washington, Seattle, Washington 98195, USAH. J. CrawfordUniversity of California, Berkeley, California 94720, USAD. DasVariable Energy Cyclotron Centre, Kolkata 700064, IndiaS. DashInstitute of Physics, Bhubaneswar 751005, IndiaM. DaugherityUniversity of Texas, Austin, Texas 78712, USAM. M. de MouraUniversidade de Sao Paulo, Sao Paulo, BrazilТ. Г. ДедовичLaboratory for High Energy (JINR), Dubna, RussiaM. DePhillipsBrookhaven National Laboratory, Upton, United StatesA. A. DerevschikovInstitute of High Energy Physics, Protvino, RussiaL. DidenkoBrookhaven National Laboratory, Upton, United StatesT. DietelUniversity of Frankfurt, Frankfurt, GermanyP. DjawothoIndiana University, Bloomington, Indiana 47408, USAS. DograUniversity of Jammu, Jammu 180001, IndiaX. DongLawrence Berkeley National Laboratory, Berkeley, California 94720, USAJ. L. DrachenbergTexas A&M University, College Station, Texas 77843, USAJ. E. DraperUniversity of California, Davis, California 95616, USAF. DuYale University, New Haven, United StatesV. B. DuninJoint Institute for Nuclear Research, Dubna, RussiaJ. C. DunlopBrookhaven National Laboratory, Upton, United StatesM. R. Dutta MazumdarVariable Energy Cyclotron Centre, Kolkata 700064, IndiaW. R. EdwardsLawrence Berkeley National Laboratory, Berkeley, United StatesL. G. EfimovJoint Institute for Nuclear Research, Dubna, RussiaE. ElhalhuliUniversity of Birmingham, Birmingham, United KingdomВ. ЕмеляновMoscow Engineering Physics Institute, Moscow RussiaJ. EngelageUniversity of California, Berkeley, Berkeley, United StatesG. EppleyRice University, Houston, Texas 77251, USAB. ErazmusSUBATECH, Nantes, FranceM. EstienneP. FachiniBrookhaven National Laboratory, Upton, United StatesR. FatemiUniversity of Kentucky, Lexington, Kentucky, 40506-0055, USAJ. FedorišinJoint Institute for Nuclear Research, Dubna, RussiaA. FengCentral China Normal University, Wuhan, ChinaP. FilipParticle Physics Laboratory (JINR), Dubna, RussiaE. FinchYale University, New Haven, United StatesV. FineBrookhaven National Laboratory, Upton, United StatesY. FisyakBrookhaven National Laboratory, Upton, United StatesJ. FuCentral China Normal University, Wuhan, ChinaC. A. GagliardiTexas A&M University, College Station, United StatesL. GaillardUniversity of Birmingham, Birmingham, United KingdomM. S. GantiVariable Energy Cyclotron Centre, Kolkata, IndiaE. García-SolisUniversity of Illinois at Chicago, Chicago, United StatesV. GhazikhanianUniversity of California, Los Angeles, Los Angeles, United StatesP. GhoshVariable Energy Cyclotron Centre, Kolkata, IndiaY. N. GorbunovCreighton University, Omaha, Nebraska 68178, USAH. GosWarsaw University of Technology, Warsaw, Poland
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Аннотация
We report a new STAR measurement of the longitudinal double-spin asymmetry A(LL) for inclusive jet production at midrapidity in polarized p + p collisions at a center-of-mass energy of sqrt[s]=200 GeV. The data, which cover jet transverse momenta 5<p(T)<30 GeV/c, are substantially more precise than previous measurements. They provide significant new constraints on the gluon spin contribution to the nucleon spin through the comparison to predictions derived from one global fit to polarized deep-inelastic scattering measurements.
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