Quark helicity distributions from longitudinal spin asymmetries in muon-proton and muon-deuteron scattering RID D-4627-2011
| Title: | Quark helicity distributions from longitudinal spin asymmetries in muon-proton and muon-deuteron scattering RID D-4627-2011 |
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| Authors: | Alekseev MG; Alexakhin VY; Alexandrov Y; Alexeev GD; Amoroso A; Austregesilo A; Badelek B; Balestra F; Barth J; Baum G; Bedfer Y; Bernhard J; Bertini R; Bettinelli M; Birsa R; Bisplinghoff J; Bordalo P; Bradamante F; Bravar A; Bressan A; Brona G; Burtin E; Bussa MP; Chaberny D; Chiosso M; Chung SU; Cicuttin A; Colantoni M; Crespo ML; Dalla Torre S; Das S; Dasgupta SS; Denisov OY; Dhara L; Diaz V; Donskov SV; Doshita N; Duic V; Dunnweber W; Efremov A; El Alaoui A; Eversheim PD; Eyrich W; Faessler M; Ferrero A; Filin A; Finger M; Fischer H; Franco C; Friedrich JM; Garfagnini R; Gautheron F; Gavrichtchouk OP; Gazda R; Gerassimov S; Geyer R; Giorgi M; Gnesi I; Gobbo B; Goertz S; Grabmuller S; Grasso A; Grube B; Gushterski R; Guskov A; Haas F; von Harrach D; Hasegawa T; Heinsius FH; Herrmann F; Hess C; Hinterberger F; Horikawa N; Hoppner C; d'Hose N; Ilgner C; Ishimoto S; Ivanov O; Ivanshin Y; Iwata T; Jahn R; Jasinski P; Jegou G; Joosten R; Kabuss E; Kang D; Ketzer B; Khaustov GV; Khokhlov YA; Kisselev Y; Klein F; Klimaszewski K; Koblitz S; Koivuniemi JH; Kolosov VN; Kondo K; Konigsmann K; Konopka R; Konorov I; Konstantinov VF; Korzenev A; Kotzinian AM; Kouznetsov O; Kowalik K; Kramer M; Kral A; Kroumchtein ZV; Kuhn R; Kunne F; Kurek K; Lauser L; Le Goff JM; Lednev AA; Lehmann A; Levorato S; Lichtenstadt J; Liska T; Maggiora A; Maggiora M; Magnon A; Makke N; Mallot GK; Mann A; Marchand C; Martin A; Marzec J; Massmann F; Matsuda T; Meyer W; Michigami T; Mikhailov YV; Moinester MA; Mutter A; Nagaytsev A; Nagel T; Nassalski J; Negrini T; Nerling F; Neubert S; Neyret D; Nikolaenko VI; Nunes AS; Olshevsky AG; Ostrick M; Padee A; Panknin R; Parsamyan B; Paul S; Pawlukiewicz Kaminska B; Perevalova E; Pesaro G; Peshekhonov DV; Piragino G; Platchkov S; Pochodzalla J; Polak J; Polyakov VA; Pontecorvo G; Pretz J; Quintans C; Rajotte JF; Ramos S; Rapatsky V; Reicherz G; Richter A; Robinet F; Rocco E; Rondio E; Ryabchikov DI; Samoylenko VD; Sandacz A; Santos H; Sapozhnikov MG; Sarkar S; Savin IA; Sbrizzai G; Schiavon P; Schill C; Schlutter T; Schmitt L; Schopferer S; Schroder W; Shevchenko OY; Siebert HW; Silva L; Sinha L; Sissakian AN; Slunecka M; Smirnov GI; Sosio S; Sozzi F; Srnka A; Stolarski M; Sulc M; Sulej R; Takekawa S; Tessaro S; Tessarotto F; Teufel A; Tkatchev LG; Uhl S; Uman I; Virius M; Vlassov NV; Vossen A; Weitzel Q; Windmolders R; Wislicki W; Wollny H; Zaremba K; Zavertyaev M; Zemlyanichkina E; Ziembicki M; Zhao J; Zhuravlev N; Zvyagin A.; PANZIERI, Daniele |
| Contributors: | Alekseev, Mg; Alexakhin, Vy; Alexandrov, Y; Alexeev, Gd; Amoroso, A; Austregesilo, A; Badelek, B; Balestra, F; Barth, J; Baum, G; Bedfer, Y; Bernhard, J; Bertini, R; Bettinelli, M; Birsa, R; Bisplinghoff, J; Bordalo, P; Bradamante, F; Bravar, A; Bressan, A; Brona, G; Burtin, E; Bussa, Mp; Chaberny, D; Chiosso, M; Chung, Su; Cicuttin, A; Colantoni, M; Crespo, Ml; Dalla Torre, S; Das, S; Dasgupta, S; Denisov, Oy; Dhara, L; Diaz, V; Donskov, Sv; Doshita, N; Duic, V; Dunnweber, W; Efremov, A; El Alaoui, A; Eversheim, Pd; Eyrich, W; Faessler, M; Ferrero, A; Filin, A; Finger, M; Fischer, H; Franco, C; Friedrich, Jm; Garfagnini, R; Gautheron, F; Gavrichtchouk, Op; Gazda, R; Gerassimov, S; Geyer, R; Giorgi, M; Gnesi, I; Gobbo, B; Goertz, S; Grabmuller, S; Grasso, A; Grube, B; Gushterski, R; Guskov, A; Haas, F; von Harrach, D; Hasegawa, T; Heinsius, Fh; Herrmann, F; Hess, C; Hinterberger, F; Horikawa, N; Hoppner, C; D'Hose, N; Ilgner, C; Ishimoto, S; Ivanov, O; Ivanshin, Y; Iwata, T; Jahn, R; Jasinski, P; Jegou, G; Joosten, R; Kabuss, E; Kang, D; Ketzer, B; Khaustov, Gv; Khokhlov, Ya; Kisselev, Y; Klein, F; Klimaszewski, K; Koblitz, S; Koivuniemi, Jh; Kolosov, Vn; Kondo, K; Konigsmann, K; Konopka, R; Konorov, I |
| Publication Year: | 2010 |
| Collection: | Università degli Studi del Piemonte Orientale: CINECA IRIS |
| Subject Terms: | COMPASS; Semi-inclusive deep inelastic scattering; Spin; Structure function; Parton distribution functions |
| Description: | Double-spin asymmetries for production of charged pions and kaons in semi-inclusive deep-inelastic muon scattering have been measured by the COMPASS experiment at CERN. The data, obtained by scattering a 160 GeV muon beam off a longitudinally polarised NH3 target, cover a range of the Bjorken variable x between 0.004 and 0.7. A leading order evaluation of the helicity distributions for the three lightest quarks and antiquark flavours derived from these asymmetries and from our previous deuteron data is presented. The resulting values of the sea quark distributions are small and do not show any sizable dependence on x in the range of the measurements. No significant difference is observed between the strange and antistrange helicity distributions, both compatible with zero. The integrated value of the flavour asymmetry of the helicity distribution of the light-quark sea, View the MathML source, is found to be slightly positive, about 1.5 standard deviations away from zero. |
| Document Type: | article in journal/newspaper |
| Language: | English |
| Relation: | info:eu-repo/semantics/altIdentifier/wos/000283211800005; volume:693; issue:3; firstpage:227; lastpage:235; numberofpages:9; journal:PHYSICS LETTERS. SECTION B; http://hdl.handle.net/11579/23255; http://www.sciencedirect.com/science/article/pii/S0370269310009810 |
| DOI: | 10.1016/j.physletb.2010.08.034 |
| Availability: | http://hdl.handle.net/11579/23255; https://doi.org/10.1016/j.physletb.2010.08.034; http://www.sciencedirect.com/science/article/pii/S0370269310009810 |
| Accession Number: | edsbas.DD472B5C |
| Database: | BASE |