6533b86efe1ef96bd12cbf5b

RESEARCH PRODUCT

Measurement of the Collins and Sivers asymmetries on transversely polarised protons

J. BarthM.g. SapozhnikovD.v. PeshekhonovGrzegorz BronaGrzegorz BronaS. IshimotoFrank KleinGerhard K. MallotR. JahnG. PesaroA. VossenF. SozziJohannes BernhardA. GuskovM. MaggioraR. BertiniAndrea FerreroM. StolarskiP. SchiavonA. BravarA.a. LednevS. SosioM. BettinelliM. KrämerS. KoblitzS. TakekawaAndrea BressanI. GnesiL. LauserJ. NassalskiM. ZiembickiI. KonorovI. KonorovS.s. DasguptaA. KorzenevA. NagaytsevF. BalestraM. SluneckaF. NerlingO.p. GavrichtchoukL. SinhaT. MatsudaNorihiro DoshitaNorihiro DoshitaG. SbrizzaF. HaasR. GeyerC. FrancoN. D'hoseM. V. ZavertyaevA. El AlaouiS. GerassimovS. GerassimovN. HorikawaG. JegouYu. IvanshinYu. AlexandrovSergey DonskovBakur ParsamyanS. PaulB. GobboA. SrnkaC. QuintansS. TessaroA. N. SissakianYu.v. MikhailovG.i. SmirnovFabrice GautheronW. SchröderA. ZvyaginA. AustregesiloA. AustregesiloR. GazdaC. EliaS. DasK. KondoK. KondoO.yu. DenisovAchim RichterF. MassmannS. RamosG. PiraginoH. SantosYu.a. KhokhlovN. I. ZhuravlevM. A. FaesslerY. BedferTakahiro IwataS. UhlM. GiorgiFranco BradamanteC. MarchandD. NeyretA.v. EfremovR. KonopkaA. TeufelT. NagelS. SchopfererV.yu. AlexakhinW. EyrichL. DharaJ. PretzAram KotzinianA. KrálR. WindmoldersR. KuhnA. MutterA. MutterP.d. EversheimB. BadelekI.a. SavinK. KowalikE. KabussD. Von HarrachJ. KieferK. ZarembaW. KaferS.-u. ChungJ. MarzecYu. KisselevV.a. PolyakovR. SulejA. LehmannL. G. TkatchevT. MichigamiP. JasinskiSt. GoertzSt. GoertzB. KetzerF. RobinetA. FilinS. GrabmüllerAnne-laure MartinF. TessarottoM. L. ColantoniE.v. KomissarovI. UmanL. SchmittF. KunneFrançois HerrmannA. AmorosoMoinesterH.-w. SiebertM. OstrickV. DiazK. KlimaszewskiV.n. KolosovCh. HöppnerR. HermannA. SandaczT. SchlüterAndres CicuttinE. BurtinG. ReicherzV.f. KonstantinovJ.m. FriedrichQ. WeitzelS. NeubertMiroslav SulcF. HinterbergerChristian SchillS. Dalla TorreE. PerevalovaJ. PochodzallaV.d. SamoylenkoS. PlatchkovJ. BisplinghoffR. PankninH. FischerM.g. AlekseevD. ChabernyElena RoccoJ. BallP. BordaloB. GrubeG.b. PontecorvoR. JoostenA. MannE. ZemlyanichkinaG.v. KhaustovD. KangK. KönigsmannW. MeyerMaria Liz CrespoG. D. AlexeevC. IlgnerC. IlgnerW. DünnweberA. MaggioraA. GrassoR. BirsaJ. LichtenstadtC. HessF.h. HeinsiusA.g. OlshevskyM. ChiossoK. KurekA. PadeeA. MagnonJ. PolakS. SarkarJ.h. KoivuniemiB. Pawlukiewicz-kaminskaV. RapatskyJean-francois RajotteD.i. RyabchikovA.s. NunesD. PanzieriT. LiškaR. GushterskiT. HasegawaE. RondioM.p. BussaO.m. KouznetsovZ.v. KroumchteinJ. M. Le GoffV. DuicT. NegriniJ. ZhaoW. WislickiLaura SilvaOleg V. IvanovH. WollnyM. ViriusN.v. VlassovGünter BaumO.yu. ShevchenkoS. LevoratoV.i. NikolaenkoR. GarfagniniM. Finger

subject

QuarkNuclear and High Energy PhysicsParticle physicsProtonmedia_common.quotation_subjectSivers asymmetryNuclear TheoryHadronFOS: Physical sciencesInelastic scattering01 natural sciencesAsymmetryCOMPASSHigh Energy Physics - ExperimentNuclear physicsHigh Energy Physics - Experiment (hep-ex)0103 physical sciencesTransverse spin effectNuclear Experiment010306 general physicsmedia_commonPhysicsMuonLarge Hadron Collider010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyTransverse spin effectsCollins asymmetryPhysics::Accelerator PhysicsHigh Energy Physics::ExperimentTransverse spin effects; Proton; Collins asymmetry; Sivers asymmetry; COMPASSProtonParticle Physics - Experiment

description

The Collins and Sivers asymmetries for charged hadrons produced in deeply inelastic scattering on transversely polarised protons have been extracted from the data collected in 2007 with the CERN SPS muon beam tuned at 160 GeV/c. At large values of the Bjorken x variable non-zero Collins asymmetries are observed both for positive and negative hadrons while the Sivers asymmetry for positive hadrons is slightly positive over almost all the measured x range. These results nicely support the present theoretical interpretation of these asymmetries, in terms of leading-twist quark distribution and fragmentation functions.

yearjournalcountryeditionlanguage
2010-05-31
10.1016/j.physletb.2010.08.001http://hdl.handle.net/11368/2320620