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Measurement of Single and Double Spin Asymmetries in Deep Inelastic Pion Electroproduction with a Longitudinally Polarized Target

Authors :
Latifa Elouadrhiri
C. A. Meyer
K. P. Adhikari
E. Seder
K. Livingston
N. Dashyan
Y. Prok
H. S. Jo
P. Collins
P. Eugenio
M. Mayer
V. Kuznetsov
S. Niccolai
Daniel S. Carman
M. J. Amaryan
Y. Ilieva
R. G. Fersch
Z. W. Zhao
A. Deur
N. Guler
G. E. Dodge
H. Baghdasaryan
M. Guidal
H. Moutarde
J. Zhang
P. Rossi
P. Konczykowski
J. Salamanca
J. Ball
F. X. Girod
S. Park
Larry Weinstein
H. Seraydaryan
B. Vernarsky
D. Heddle
I. Niculescu
S. Procureur
D. Protopopescu
Michael Vineyard
B. Morrison
D. P. Watts
E. De Sanctis
S. Dhamija
Y. G. Sharabian
D. Martinez
S. Fegan
R. A. Schumacher
V. Crede
S. Stepanyan
R. Dickson
E. Voutier
M. Aghasyan
M. Taiuti
R. W. Gothe
B. Dey
N. Markov
H. Hakobyan
S. Anefalos Pereira
L. Guo
D. Doughty
M. Ungaro
D. Keller
R. Nasseripour
J. W. Price
S. S. Stepanyan
E. Pasyuk
M. R. Niroula
A. El Alaoui
B. A. Raue
M. Y. Gabrielyan
T. A. Forest
P. Nadel-Turonski
B. Zhao
S. Tkachenko
G. Ricco
Philip L. Cole
Avraham Klein
M. Ripani
T. Mineeva
S. S. Jawalkar
M. S. Saini
G. Rosner
G. Gavalian
D. J. Tedeschi
Friedrich Klein
I. Bedlinskiy
P. Bosted
E. Munevar
B. Moreno
M. Mirazita
M. Holtrop
C. Salgado
A. Daniel
Chaden Djalali
D. G. Crabb
S. E. Kuhn
M. E. McCracken
M. Anghinolfi
L. Casey
K. Moriya
N. Hassall
C. Hanretty
Y. Perrin
F. Sabatié
W. J. Briscoe
Victor Mokeev
K. Joo
K. L. Giovanetti
S. V. Kuleshov
H. Y. Lu
D. P. Weygand
M. Battaglieri
M. Osipenko
W. Kim
G. Niculescu
A. I. Ostrovidov
K. Park
D. G. Ireland
P. Khetarpal
Volker D. Burkert
A. S. Biselli
A. Fradi
R. De Vita
R. Suleiman
S. Pisano
K.H. Hicks
D. I. Sober
P. Stoler
K. A. Griffioen
S. Strauch
R. Paremuzyan
Gerard Gilfoyle
D. Sokhan
B. McKinnon
D. Branford
N. Gevorgyan
H. Avakian
W. K. Brooks
V. P. Kubarovsky
Annalisa D'Angelo
J. McAndrew
Michael Wood
K. Hafidi
E. L. Isupov
W. Gohn
R. Dupre
O. Pogorelko
M. Khandaker
Département de Physique Nucléaire (ex SPhN) (DPHN)
Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU)
Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay
Laboratoire de Physique Subatomique et de Cosmologie (LPSC)
Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS)
Institut de Physique Nucléaire d'Orsay (IPNO)
Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)
CLAS
Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)
Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Source :
Physical Review Letters, Physical Review Letters, American Physical Society, 2010, 105, pp.262002. ⟨10.1103/PhysRevLett.105.262002⟩, Physical Review Letters, 2010, 105, pp.262002. ⟨10.1103/PhysRevLett.105.262002⟩, PHYSICAL REVIEW LETTERS, Artículos CONICYT, CONICYT Chile, instacron:CONICYT
Publication Year :
2010
Publisher :
HAL CCSD, 2010.

Abstract

We report the first measurement of the transverse momentum dependence of double-spin asymmetries in semi-inclusive production of pions in deep-inelastic scattering off the longitudinally polarized proton. Data have been obtained using a polarized electron beam of 5.7 GeV with the CLAS detector at the Jefferson Lab (JLab). Modulations of single spin asymmetries over the azimuthal angle between lepton scattering and hadron production planes phi have been measured over a wide kinematic range in Bjorken x and virtual photon squared four-momentum Q(2). A significant nonzero sin2 phi single spin asymmetry was observed for the first time indicating strong spin-orbit correlations for transversely polarized quarks in the longitudinally polarized proton.

Subjects

Subjects :
Particle physics
Meson
DRELL-YAN
Hadron
General Physics and Astronomy
FOS: Physical sciences
Inelastic scattering
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
01 natural sciences
Settore FIS/04 - Fisica Nucleare e Subnucleare
High Energy Physics - Experiment
Nuclear physics
High Energy Physics - Experiment (hep-ex)
Pion
DEPENDENCE
CLAS
0103 physical sciences
[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
SCATTERING
DISTRIBUTIONS
Nuclear Experiment (nucl-ex)
010306 general physics
FINAL-STATE INTERACTIONS, TRANSVERSE-MOMENTUM, AZIMUTHAL ASYMMETRIES, DRELL-YAN, SCATTERING, DISTRIBUTIONS, QUARK, DEPENDENCE, CLAS, QCD
Nuclear Experiment
Spin-½
Physics
FINAL-STATE INTERACTIONS
010308 nuclear & particles physics
QUARK
TRANSVERSE-MOMENTUM
Deep inelastic scattering
AZIMUTHAL ASYMMETRIES
QCD
Physics::Accelerator Physics
High Energy Physics::Experiment
Nucleon
Lepton

Details

Language :
English
ISSN :
00319007 and 10797114
Database :
OpenAIRE
Journal :
Physical Review Letters, Physical Review Letters, American Physical Society, 2010, 105, pp.262002. ⟨10.1103/PhysRevLett.105.262002⟩, Physical Review Letters, 2010, 105, pp.262002. ⟨10.1103/PhysRevLett.105.262002⟩, PHYSICAL REVIEW LETTERS, Artículos CONICYT, CONICYT Chile, instacron:CONICYT
Accession number :
edsair.doi.dedup.....275ca3862bed5cc23b85246c683fd4a2

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