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CERN Document Server 找到 157 笔记录  1 - 10下一个最後  跳到记录: 检索需时 0.55 秒. 
1.
A measurement of $\Lambda$ polarization in inclusive production by $\Sigma^-$ of 340-GeV/c in C and Cu targets / Adamovich, M I (LPI, Moscow (main)) ; Alexandrov, Yu A (LPI, Moscow (main)) ; Baranov, S P (LPI, Moscow (main)) ; Barberis, D (Genoa U. ; INFN, Genoa) ; Beck, M (Heidelberg, Max Planck Inst.) ; ́erat, C B (Grenoble, CEN) ; Beusch, W (CERN) ; Boss, M (Heidelberg U.) ; Brons, S (Heidelberg, Max Planck Inst.) ; Brückner, W (Heidelberg, Max Planck Inst.) et al. /WA89
We have measured the polarization of $\Lambda$ hyperons produced inclusively by a $\Sigma^-$ beam of 340 GeV/c momentum in nuclear targets. From a sample of 9.5 millions of identified $\Lambda$ decays, polarizations were determined in the range $x_F \gt 0.1$ and $p_t\leq 1.6$ GeV/c . [...]
2003 - 8 p. - Published in : Eur. Phys. J. C 32 (2004) 221-228
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2.
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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3.
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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4.
Measurement of azimuthal hadron asymmetries in semi-inclusive deep inelastic scattering off unpolarised nucleons / COMPASS Collaboration
Spin-averaged asymmetries in the azimuthal distributions of positive and negative hadrons produced in deep inelastic scattering were measured using the CERN SPS muon beam at $160$ GeV/c and a $^6$LiD target. The amplitudes of the three azimuthal modulations $\cos\phi_h$, $\cos2\phi_h$ and $\sin\phi_h$ were obtained binning the data separately in each of the relevant kinematic variables $x$, $z$ or $p_T^{\,h}$ and binning in a three-dimensional grid of these three variables. [...]
arXiv:1401.6284; CERN-PH-EP-2014-009; CERN-PH-EP-2014-009.- Geneva : CERN, 2014-09 - 32 p. - Published in : Nucl. Phys. B 886 (2014) 1046-1077 Article from SCOAP3: PDF; Draft (restricted): PDF; Elsevier Open Access article: PDF; Fulltext: S0550321314002387 - XML; CERN-PH-EP-2014-009 - PDF; arXiv:1401.6284 - PDF;
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5.
Transverse target spin asymmetries in exclusive $\rho^0$ muoproduction / COMPASS Collaboration
Exclusive production of $\rho^0$ mesons was studied at the COMPASS experiment by scattering 160 GeV/$c$ muons off transversely polarised protons. Five single-spin and three double-spin azimuthal asymmetries were measured as a function of $Q^2$, $x_{Bj}$, or $p_{T}^{2}$. [...]
arXiv:1310.1454; CERN-PH-EP-2013-191; CERN-PH-EP-2013-191.- Geneva : CERN, 2014-04-04 - 8 p. - Published in : Phys. Lett. B 731 (2014) 19-26 Article from SCOAP3: PDF; Draft (restricted): PDF; Elsevier Open Access article: PDF; Fulltext: S0370269314000963 - XML; arXiv:1310.1454 - PDF; CERN-PH-EP-2013-191 - PDF;
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6.
Hadron Transverse Momentum Distributions in Muon Deep Inelastic Scattering at 160 GeV/$c$ / COMPASS Collaboration
Multiplicities of charged hadrons produced in deep inelastic muon scattering off a $^6$LiD target have been measured as a function of the DIS variables $x_{Bj}$, $Q^2$, $W^2$ and the final state hadron variables $p_T$ and $z$. The $p_T^2$ distributions are fitted with a single exponential function at low values of $p_T^2$ to determine the dependence of $\langle p_T^2 \rangle$ on $x_{Bj}$, $Q^2$, $W^2$ and $z$. [...]
arXiv:1305.7317; CERN-PH-EP-2013-091; CERN-PH-EP-2013-091.- Geneva : CERN, 2013-08-23 - 18 p.
- Published in : Eur. Phys. J. C Article from SCOAP3: PDF; Fulltext: PDF; Springer Open Access Erratum: PDF; External link: Preprint
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7.
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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8.
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.
D* and D Meson Production in Muon Nucleon Interactions at 160 GeV/c / COMPASS Collaboration
The production of D* and D mesons in inelastic scattering of 160 GeV/c muons off a $^6$LiD target has been investigated with the COMPASS spectrometer at CERN for 0.003 (GeV/c)$^2 < Q^2 < 10$ (GeV/c)$^2$ and 3x10$^-5< x_{Bj}$ < 0.1. The study is based on 8100 events where a $D^0$ or anti $D^0$ is detected subsequently to a $D^{*+}$ or $D^{*-}$ decay, and on 34000 events, where only a $D^0$ or anti $D^0$ is detected. [...]
arXiv:1211.1575; CERN-PH-EP-2012-339; CERN-PH-EP-2012-339.- Geneva : CERN, 2012-12-11 - 22 p. - Published in : Eur. Phys. J. C 72 (2012) 2253 Draft (restricted): PDF; Fulltext: arXiv:1211.1575 - PDF; CERN-PH-EP-2012-339 - PDF; Springer Open Access article: PDF; External link: Preprint
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10.
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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CERN Document Server : 找到 157 笔记录   1 - 10下一个最後  跳到记录:
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