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CERN Document Server Sök i 2,048 journaler efter:  1 - 10nästaslut  gå till journal: Sökningen tog 0.99 sekunder. 
1.
(100)
A high-statistics measurement of transverse spin effects in dihadron production from muon-proton semi-inclusive deep-inelastic scattering / COMPASS Collaboration
A measurement of the azimuthal asymmetry in dihadron production in deep-inelastic scattering of muons on transversely polarised proton (NH$_{3}$) targets are presented. They provide independent access to the transversity distribution functions through the measurement of the Collins asymmetry in single hadron production. [...]
arXiv:1401.7873; CERN-PH-EP-2014-013; CERN-PH-EP-2014-013.- Geneva : CERN, 2014-09-07 - 8 p. - Published in : Phys. Lett. B 736 (2014) 124-131 Article from SCOAP3: PDF; Draft (restricted): PDF; Elsevier Open Access article: PDF; Fulltext: arXiv:1401.7873 - PDF; S0370269314004857 - XML; CERN-PH-EP-2014-013 - PDF;
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2.
(91)
Study of $\Sigma$(1385) and $\Xi$(1321) hyperon and antihyperon production in deep inelastic muon scattering / COMPASS collaboration
Large samples of $\Lambda$, $\Sigma(1385)$ and $\Xi(1321)$ hyperons produced in deep-inelastic muon scattering off a $^6$LiD target were collected with the COMPASS experimental setup at CERN. The relative yields of $\Sigma(1385)^+$, $\Sigma(1385)^-$, $\bar{\Sigma}(1385)^-$, $\bar{\Sigma}(1385)^+$, $\Xi(1321)^-$, and $\bar{\Xi}(1321)^+$ hyperons decaying into $\Lambda(\bar{\Lambda})\pi$ were measured. [...]
arXiv:1304.0952; CERN-PH-EP-2013-052; CERN-PH-EP-2013-052.- Geneva : CERN, 2013-10-09 - 11 p. - Published in : Eur. Phys. J. C 73 (2013) 2581 Draft (restricted): PDF; Fulltext: arXiv:1304.0952 - PDF; CERN-PH-EP-2013-052 - PDF; External link: Preprint
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3.
(90)
Measurement of the Collins and Sivers asymmetries on transversely polarised protons / COMPASS Collaboration
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. [...]
arXiv:1005.5609; CERN-PH-EP-2010-013; CERN-PH-EP-2010-013.- 2010 - 9 p. - Published in : Phys. Lett. B 692 (2010) 240-246 Fulltext: PDF; External link: DURHAM
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4.
(90)
Quark helicity distributions from longitudinal spin asymmetries in muon-proton and muon-deuteron scattering / COMPASS Collaboration
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 NH_3 target, cover a range of the Bjorken variable x between 0.004 and 0.7. [...]
arXiv:1007.4061; CERN-PH-EP-2010-023; CERN-PH-EP-2010-023.- Geneva : CERN, 2010 - 13 p. - Published in : Phys. Lett. B 693 (2010) 227-235 Fulltext: arXiv:1007.4061 - PDF; CERN-PH-EP-2010-023 - PDF; External link: Preprint
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5.
(89)
Exclusive $\rho^0$ muoproduction on transversely polarised protons and deuterons / COMPASS Collaboration
The transverse target spin azimuthal asymmetry A_UT in hard exclusive production of rho^0 mesons was measured at COMPASS by scattering 160 GeV/c muons off transversely polarised protons and deuterons. The measured asymmetry is sensitive to the nucleon helicity-flip generalised parton distributions E^q, which are related to the orbital angular momentum of quarks in the nucleon. [...]
arXiv:1207.4301; CERN-PH-EP-2012-208; CERN-PH-EP-2012-208.- Geneva : CERN, 2012-12-01 - 20 p. - Published in : Nucl. Phys. B 865 (2012) 1 Draft (restricted): PDF; Fulltext: arXiv:1207.4301 - PDF; CERN-PH-EP-2012-208 - PDF; External link: Preprint
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6.
(89)
Azimuthal asymmetries of charged hadrons produced by high-energy muons scattered off longitudinally polarised deuterons / COMPASS Collaboration
Azimuthal asymmetries in semi-inclusive production of positive (h^+) and negative hadrons (h^-) have been measured by scattering 160 GeV muons off longitudinally polarised deuterons at CERN. The asymmetries were decomposed in several terms according to their expected modulation in the azimuthal angle phi of the outgoing hadron. [...]
arXiv:1007.1562; CERN-PH-EP-2010-018; CERN-PH-EP-2010-018.- Geneva : CERN, 2010 - 12 p. - Published in : Eur. Phys. J. C 70 (2010) 39-49 Fulltext: CERN-PH-EP-2010-018 - PDF; arXiv:1007.1562 - PDF; External link: Preprint
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7.
(87)
The COMPASS Experiment at CERN / COMPASS Collaboration
The COMPASS experiment makes use of the CERN SPS high-intensitymuon and hadron beams for the investigation of the nucleon spin structure and the spectroscopy of hadrons. One or more outgoing particles are detected in coincidence with the incoming muon or hadron. [...]
hep-ex/0703049; CERN-PH-EP-2007-001; CERN-PH-EP-2007-001.- Geneva : CERN, 2007 - 84 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 577 (2007) 455-518 Fulltext: arXiv:hep-ex_0703049 - PDF; phep-2007-001 - PDF; External link: Preprint
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8.
(87)
Leading and Next-to-Leading Order Gluon Polarization in the Nucleon and Longitudinal Double Spin Asymmetries from Open Charm Muoproduction / COMPASS collaboration
The gluon polarisation in the nucleon was measured using open charm production by scattering 160 GeV/c polarised muons off longitudinally polarised protons or deuterons. The data were taken by the COMPASS collaboration between 2002 and 2007. [...]
arXiv:1211.6849; CERN-PH-EP-2012-350; CERN-PH-EP-2012-350.- Geneva : CERN, 2013-03-25 - 22 p. - Published in : Phys. Rev. D 87 (2013) 052018 APS published version, local copy: PDF; Draft (restricted): PDF; Fulltext: CERN-PH-EP-2012-350 - PDF; arXiv:1211.6849 - PDF; External link: Preprint
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9.
(87)
The COMPASS Setup for Physics with Hadron Beams / COMPASS Collaboration
The main characteristics of the COMPASS experimental setup for physics with hadron beams are described. This setup was designed to perform exclusive measurements of processes with several charged and/or neutral particles in the final state. [...]
arXiv:1410.1797; CERN-PH-EP-2014-247; CERN-PH-EP-2014-247.- Geneva : CERN, 2015-04-11 - 47 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 779 (2015) 69-115 Draft (restricted): PDF; Elsevier Open Access article: PDF; Fulltext: arXiv:1410.1797 - PDF; CERN-PH-EP-2014-247 - PDF; External link: Preprint
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10.
(86)
The Polarised Valence Quark Distribution from semi-inclusive DIS / COMPASS Collaboration
The semi-inclusive difference asymmetry A^{h+ - h-} for hadrons of opposite charge has been measured by the COMPASS experiment at CERN. The data were collected in the years 2002-2004 using a 160 GeV polarised muon beam scattered off a large polarised 6-LiD target and cover the range 0.006 < x < 0.7 and 1 < Q^2 < 100 (GeV/c)^2. [...]
arXiv:0707.4077; CERN-PH-EP-2007-024; CERN-PH-EP-2007-024.- Geneva : CERN, 2008 - 10 p. - Published in : Phys. Lett. B 660 (2008) 458-465 Fulltext: arXiv:0707.4077 - PDF; phep-2007-024 - PDF; External link: Preprint
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