I - Experimental investigation of transverse spin asymmetries in mu-p SIDIS processes: Collins asymmetries

C. Adolph; M.G. Alekseev; V.Yu. Alexakhin; Yu. Alexandrov; G.D. Alexeev; A. Amoroso; A.A. Antonov; A. Austregesilo; B. Badełek; F. Balestra; J. Barth; G. Baum; Y. Bedfer; J. Bernhard; R. Bertini; M. Bettinelli; K. Bicker; J. Bieling; R. Birsa; J. Bisplinghoff; P. Bordalo; F. Bradamante; C. Braun; A. Bravar; A. Bressan; E. Burtin; D. Chaberny; M. Chiosso; S.U. Chung; A. Cicuttin; M.L. Crespo; S. Dalla Torre; S. Das; S.S. Dasgupta; O.Yu. Denisov; L. Dhara; S.V. Donskov; N. Doshita; V. Duic; W. Dünnweber; M. Dziewiecki; A. Efremov; C. Elia; P.D. Eversheim; W. Eyrich; M. Faessler; A. Ferrero; A. Filin; M. Finger; H. Fischer; C. Franco; N. Du Fresne von Hohenesche; J.M. Friedrich; R. Garfagnini; F. Gautheron; O.P. Gavrichtchouk; R. Gazda; S. Gerassimov; R. Geyer; M. Giorgi; I. Gnesi; B. Gobbo; S. Goertz; S. Grabmüller; A. Grasso; B. Grube; R. Gushterski; A. Guskov; T. Guthörl; F. Haas; D. von Harrach; S. Hedicke; F.H. Heinsius; F. Herrmann; C. Hess; F. Hinterberger; N. Horikawa; Ch. Höppner; N. Dʼhose; S. Huber; S. Ishimoto; O. Ivanov; Yu. Ivanshin; T. Iwata; R. Jahn; P. Jasinski; R. Joosten; E. Kabuss; D. Kang; B. Ketzer; G.V. Khaustov; Yu.A. Khokhlov; Yu. Kisselev; F. Klein; K. Klimaszewski; S. Koblitz; J.H. Koivuniemi; V.N. Kolosov; K. Kondo; K. Königsmann; I. Konorov; V.F. Konstantinov; A. Korzenev; A.M. Kotzinian; O. Kouznetsov; M. Krämer; Z.V. Kroumchtein; F. Kunne; K. Kurek; L. Lauser; J.-M. Le Goff; A.A. Lednev; A. Lehmann; S. Levorato; J. Lichtenstadt; A. Maggiora; A. Magnon; N. Makke; G.K. Mallot; A. Mann; C. Marchand; A. Martin; J. Marzec; T. Matsuda; W. Meyer; T. Michigami; Yu.V. Mikhailov; M.A. Moinester; A. Morreale; A. Mutter; A. Nagaytsev; T. Nagel; J.P. Nassalski; F. Nerling; S. Neubert; D. Neyret; V.I. Nikolaenko; W.D. Nowak; A.S. Nunes; A.G. Olshevsky; M. Ostrick; A. Padee; R. Panknin; D. Panzieri; B. Parsamyan; S. Paul; E. Perevalova; G. Pesaro; D.V. Peshekhonov; G. Piragino; S. Platchkov; J. Pochodzalla; J. Polak; V.A. Polyakov; G. Pontecorvo; J. Pretz; S.L. Procureur; M. Quaresma; C. Quintans; J.-F. Rajotte; S. Ramos; V. Rapatsky; G. Reicherz; A. Richter; E. Rocco; E. Rondio; N.S. Rossiyskaya; D.I. Ryabchikov; V.D. Samoylenko; A. Sandacz; M.G. Sapozhnikov; S. Sarkar; I.A. Savin; G. Sbrizzai; P. Schiavon; C. Schill; T. Schlüter; K. Schmidt; L. Schmitt; K. Schönning; S. Schopferer; M. Schott; O.Yu. Shevchenko; L. Silva; L. Sinha; A.N. Sissakian; M. Slunecka; George Smirnov; S. Sosio; F. Sozzi; A. Srnka; M. Stolarski; M. Sulc; R. Sulej; P. Sznajder; S. Takekawa; J. ter Wolbeek; S. Tessaro; F. Tessarotto; L.G. Tkatchev; S. Uhl; I. Uman; M. Vandenbroucke; M. Virius; N.V. Vlassov; L. Wang; R. Windmolders; W. Wiślicki; H. Wollny; K. Zaremba; M. Zavertyaev; E. Zemlyanichkina; M. Ziembicki; N. Zhuravlev; A. Zvyagin

doi:10.1016/j.physletb.2012.09.055

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I - Experimental investigation of transverse spin asymmetries in mu-p SIDIS processes: Collins asymmetries

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I - Experimental investigation of transverse spin asymmetries in mu-p SIDIS processes: Collins asymmetries

C. Adolph, M.G. Alekseev, V.Yu. Alexakhin, Yu. Alexandrov, G.D. Alexeev, A. Amoroso, A.A. Antonov, A. Austregesilo, B. Badełek, F. Balestra, …

Physics Letters B, Vol.717(4-5)

2012

DOI: https://doi.org/10.1016/j.physletb.2012.09.055

Abstract

The COMPASS Collaboration at CERN has measured the transverse spin azimuthal asymmetry of charged hadrons produced in semi-inclusive deep inelastic scattering using a 160 GeV mu(+) beam and a transversely polarised NH3 target. The Collins asymmetry of the proton was extracted in the Bjorken x range 0.003 < x < 0.7. These new precise measurements confirm previous measurements from the COMPASS and HERMES Collaborations, which exhibit a definite effect in the valence quark region. The asymmetries for negative and positive hadrons are similar in magnitude and opposite in sign. They are compatible with model calculations in which the u-quark transversity is opposite in sign and somewhat larger than the d-quark transversity distribution function. The asymmetry is extracted as a function of Bjorken x, the relative hadron energy z and the hadron transverse momentum p(T)(h). The high statistics and quality of the data also allow for more detailed investigations of the dependence on the kinematic variables. These studies confirm the leading-twist nature of the Collins asymmetry.

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Title: I - Experimental investigation of transverse spin asymmetries in mu-p SIDIS processes: Collins asymmetries
Creators - without role: C. Adolph - Physikalisches Institut [Erlangen]
M.G. Alekseev - Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
V.Yu. Alexakhin
Yu. Alexandrov - P.N. Lebedev Physical Institute of the Russian Academy of Sciences
G.D. Alexeev - Joint Institute for Nuclear Research
A. Amoroso - University of Turin
A.A. Antonov
A. Austregesilo - European Organization for Nuclear Research
B. Badełek
F. Balestra - Laboratoire de Physique des Composants à Semiconducteurs
J. Barth - University of Bonn
G. Baum - Bielefeld University
Y. Bedfer - Département de Physique Nucléaire (ex SPhN)
J. Bernhard - Johannes Gutenberg University Mainz
R. Bertini - University of Turin
M. Bettinelli - University of Verona
K. Bicker - European Organization for Nuclear Research
J. Bieling - University of Bonn
R. Birsa - Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
J. Bisplinghoff - University of Bonn
P. Bordalo - Instituto Politécnico de Lisboa
F. Bradamante
C. Braun - European Organization for Nuclear Research
A. Bravar
A. Bressan - Department of Mathematics [Philadelphia]
E. Burtin - Département de Physique Nucléaire (ex SPhN)
D. Chaberny
M. Chiosso
S.U. Chung - National Taiwan University
A. Cicuttin - The Abdus Salam International Centre for Theoretical Physics (ICTP)
M.L. Crespo
S. Dalla Torre
S. Das - Laboratoire d’Informatique Fondamentale de Marseille
S.S. Dasgupta - Department of Zoology
O.Yu. Denisov
L. Dhara
S.V. Donskov
N. Doshita
V. Duic
W. Dünnweber
M. Dziewiecki
A. Efremov - Joint Institute for Nuclear Research
C. Elia - Antonine University
P.D. Eversheim - University of Bonn
W. Eyrich - Friedrich-Alexander-Universität Erlangen-Nürnberg
M. Faessler
A. Ferrero - Département de Physique Nucléaire (ex SPhN)
A. Filin
M. Finger - Joint Institute for Nuclear Research
H. Fischer - Karlsruhe Institute of Technology
C. Franco - Laboratoire sur le Langage, le Cerveau et la Cognition
N. Du Fresne von Hohenesche - European Organization for Nuclear Research
J.M. Friedrich
R. Garfagnini - Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
F. Gautheron - Ruhr University Bochum
O.P. Gavrichtchouk - Joint Institute for Nuclear Research
R. Gazda
S. Gerassimov
R. Geyer - Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
M. Giorgi
I. Gnesi
B. Gobbo
S. Goertz
S. Grabmüller
A. Grasso - Archeobotanica e Paleoecologia
B. Grube
R. Gushterski - Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
A. Guskov
T. Guthörl - University of Freiburg
F. Haas - Département Recherches Subatomiques
D. von Harrach - Johannes Gutenberg University Mainz
S. Hedicke
F.H. Heinsius
F. Herrmann - University of Freiburg
C. Hess
F. Hinterberger
N. Horikawa
Ch. Höppner
N. Dʼhose - Département de Physique Nucléaire (ex SPhN)
S. Huber - Ion Physics
S. Ishimoto
O. Ivanov
Yu. Ivanshin - P.N. Lebedev Physical Institute of the Russian Academy of Sciences
T. Iwata - Department of Environmental and Materials Engineering
R. Jahn - Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
P. Jasinski
R. Joosten - Institute for Computing and Information Sciences [Nijmegen]
E. Kabuss
D. Kang
B. Ketzer
G.V. Khaustov
Yu.A. Khokhlov - P.N. Lebedev Physical Institute of the Russian Academy of Sciences
Yu. Kisselev - P.N. Lebedev Physical Institute of the Russian Academy of Sciences
F. Klein - Laboratory of Molecular Immunology
K. Klimaszewski - European Organization for Nuclear Research
S. Koblitz
J.H. Koivuniemi
V.N. Kolosov
K. Kondo - European Organization for Nuclear Research
K. Königsmann - European Organization for Nuclear Research
I. Konorov
V.F. Konstantinov
A. Korzenev - Département de Physique Nucléaire (ex SPhN)
A.M. Kotzinian - University of Turin
O. Kouznetsov
M. Krämer - University of Manchester
Z.V. Kroumchtein
F. Kunne - Département de Physique Nucléaire (ex SPhN)
K. Kurek - European Organization for Nuclear Research
L. Lauser
J.-M. Le Goff - Université de Caen Normandie
A.A. Lednev
A. Lehmann - Centre for Research on Brain Language and Music
S. Levorato
J. Lichtenstadt
A. Maggiora
A. Magnon - Département de Physique Nucléaire (ex SPhN)
N. Makke - Département de Physique Nucléaire (ex SPhN)
G.K. Mallot - European Organization for Nuclear Research
A. Mann - Princeton University
C. Marchand - Département de Physique Nucléaire (ex SPhN)
A. Martin - aucun
J. Marzec
T. Matsuda
W. Meyer
T. Michigami
Yu.V. Mikhailov
M.A. Moinester
A. Morreale - Département de Physique Nucléaire (ex SPhN)
A. Mutter
A. Nagaytsev
T. Nagel
J.P. Nassalski
F. Nerling
S. Neubert
D. Neyret - Département de Physique Nucléaire (ex SPhN)
V.I. Nikolaenko
W.D. Nowak
A.S. Nunes - LIP - Laboratory of Instrumentation and Experimental Particle Physics
A.G. Olshevsky
M. Ostrick
A. Padee
R. Panknin - Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
D. Panzieri
B. Parsamyan
S. Paul - Analyse, Géométrie et Modélisation
E. Perevalova
G. Pesaro
D.V. Peshekhonov
G. Piragino
S. Platchkov - Département de Physique Nucléaire (ex SPhN)
J. Pochodzalla
J. Polak - Franco-czech Laboratory for clinical research on obesity
V.A. Polyakov
G. Pontecorvo
J. Pretz
S.L. Procureur
M. Quaresma
C. Quintans - European Organization for Nuclear Research
J.-F. Rajotte
S. Ramos - Institut de Chimie des Substances Naturelles
V. Rapatsky
G. Reicherz
A. Richter - University of Bremen
E. Rocco
E. Rondio
N.S. Rossiyskaya
D.I. Ryabchikov
V.D. Samoylenko
A. Sandacz
M.G. Sapozhnikov - Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
S. Sarkar - University of Cambridge
I.A. Savin
G. Sbrizzai
P. Schiavon
C. Schill - European Organization for Nuclear Research
T. Schlüter
K. Schmidt - European Organization for Nuclear Research
L. Schmitt - Nordic Life Science Pipeline
K. Schönning - European Organization for Nuclear Research
S. Schopferer
M. Schott - Université de Montpellier, Institut des Biomolécules Max Mousseron - IBMM
O.Yu. Shevchenko
L. Silva - Laboratoire de Recherche en Informatique de Paris 6
L. Sinha
A.N. Sissakian
M. Slunecka
George Smirnov - Departamento de Matemática e Aplicações
S. Sosio
F. Sozzi
A. Srnka
M. Stolarski
M. Sulc
R. Sulej - Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
P. Sznajder
S. Takekawa
J. ter Wolbeek
S. Tessaro
F. Tessarotto
L.G. Tkatchev
S. Uhl
I. Uman
M. Vandenbroucke - Département de Physique Nucléaire (ex SPhN)
M. Virius
N.V. Vlassov
L. Wang - Imagerie et modélisation Vasculaires, Thoraciques et Cérébrales
R. Windmolders - Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
W. Wiślicki
H. Wollny - Département de Physique Nucléaire (ex SPhN)
K. Zaremba
M. Zavertyaev
E. Zemlyanichkina
M. Ziembicki
N. Zhuravlev
A. Zvyagin
Publication Details: Physics Letters B, Vol.717(4-5)
Identifiers: 9934062109311
Academic Unit: Institut des Biomolécules Max Mousseron - IBMM
Language: English
Resource Type: Journal article
Local Fields: hal-01128815