6533b82ffe1ef96bd1294f11

RESEARCH PRODUCT

Spin asymmetry A1d and the spin-dependent structure function g1d of the deuteron at low values of x and Q2

Aram KotzinianAram KotzinianR. WindmoldersM.g. SapozhnikovS. NelibaL. SchmittA. JanataJ. ZhaoE. BurtinJ. LichtenstadtR. GeyerD.v. PeshekhonovP. SchiavonV.f. KonstantinovQ. WeitzelJ. PretzL. FerreroH. FischerA.g. OlshevskyT. HasegawaS. ProcureurR. ZieglerYu. AlexandrovA. ChapiroM. FabroV.f. ObraztsovM. MaggioraK. ZarembaD. NeyretG.i. SmirnovFabrice GautheronM. A. FaesslerV.a. PolyakovR. C. WebbA. MielechA. MielechS. IshimotoFrank KleinAndres CicuttinA. AmorosoG. ReicherzJ. MarzecSt. GoertzSt. GoertzV.yu. AlexakhinA. KorzenevColin BernetMassimo LamannaMassimo LamannaYu. KisselevYu. KisselevA. SandaczA. SrnkaR. SulejC. IlgnerS. PlatchkovS. Dalla TorreV.p. SugonyaevN.p. KravchukA. BravarM. OstrickI. KonorovI. KonorovM. StolarskiC. QuintansGrzegorz BronaGerhard K. MallotA. ZvyaginMurray MoinesterS. RamosAlessandro BressanF. TessarottoE. M. KabußA.m. RozhdestvenskyN. V. KhomutovA. GorinI.a. SavinT. MatsudaT. IwataZ.v. KroumchteinF. SozziD. Von HarrachF. BalestraFranco BradamanteF.h. HeinsiusNorihiro DoshitaS. GerassimovS. GerassimovW. EyrichJ. BallL. G. TkatchevV. FalaleevN. HorikawaH.-w. SiebertH.-w. SiebertYu.v. MikhailovS. KoblitzN. D'hoseE.v. KomissarovA. GrassoSergey DonskovS. PaulV. Diaz KavkaR. JahnA. MagnonA. N. SissakianB. GrubeD. PanzieriJ. NassalskiO.yu. DenisovT. LiškaYu.a. KhokhlovI. LudwigR. JoostenK. KurekG. D. AlexeevO.a. GrajekMiroslav SulcF. HinterbergerC. MarchandA. MaximovW. DünnweberM. ViriusJ.m. FriedrichV.d. SamoylenkoE. WeiseJ. PochodzallaM.l. ColantoniS. HedickeO.p. GavrichtchoukL. SinhaJ. MarroncleS.s. DasguptaN. TakabayashiJ. BisplinghoffA.i. IoukaevE. RondioK. KondoR. De MasiP. BordaloM.p. BussaA.a. ShishkinG.v. KhaustovAlan D. MartinJ. HeckmannJ. FranzS. WirthY. BedferJ. HannappelPaolo PaganoVladimir PeshekhonovJ. M. Le GoffR. BirsaN.i. JouravlevS. HorikawaP.d. EversheimG. PiraginoV. DuicW. MeyerMaria Liz CrespoM.e. LadyginA.a. NozdrinC. HeßM. GiorgiV. FrolovV.n. KolosovF. StinzingN.a. KoutchinskiR. KuhnD. KangK. KönigsmannChristian SchillA. PadeeO. NähleR. BertiniA.b. SadovskiR. HermannAndrea FerreroA. MaggioraV.a. DorofeevL. DharaM. SluneckaB. BadelekW. WiślickiB. GobboA.s. KorentchenkoA.m. DinkelbachB. KetzerA. TeufelOleg V. IvanovM. Von HodenbergF. KunneA.a. PopovN.v. VlassovGünter BaumO.yu. ShevchenkoV.i. NikolaenkoR. GarfagniniM. FingerV.v. TchalishevS. CostaJ.h. KoivuniemiS. Panebianco

subject

PhysicsNuclear and High Energy PhysicsRange (particle radiation)Large Hadron Collider010308 nuclear & particles physicsmedia_common.quotation_subjectStructure functionZero (complex analysis)01 natural sciencesAsymmetryNuclear physicsDeuterium0103 physical sciencesCOMPASS experiment010306 general physicsSpin-½media_common

description

Abstract We present a precise measurement of the deuteron longitudinal spin asymmetry A 1 d and of the deuteron spin-dependent structure function g 1 d at Q 2 1 ( GeV / c ) 2 and 4 × 10 −5 x 2.5 × 10 −2 based on the data collected by the COMPASS experiment at CERN during the years 2002 and 2003. The statistical precision is tenfold better than that of the previous measurement in this region. The measured A 1 d and g 1 d are found to be consistent with zero in the whole range of x.

https://doi.org/10.1016/j.physletb.2007.02.034