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CERN Document Server Намерени са 42 записа  1 - 10следващкрай  отиване на запис: Търсенето отне 0.68 секунди. 
1.
The Spin Structure Function $g_1^{\rm p}$ of the Proton and a Test of the Bjorken Sum Rule / COMPASS Collaboration
New results for the double spin asymmetry $A_1^{\rm p}$ and the proton longitudinal spin structure function $g_1^{\rm p}$ are presented. They were obtained by the COMPASS collaboration using polarised 200 GeV muons scattered off a longitudinally polarised NH$_3$ target. [...]
arXiv:1503.08935; CERN-PH-EP-2015-085; CERN-PH-EP-2015-085.- Geneva : CERN, 2016-02-10 - 11 p. - Published in : Phys. Lett. B 753 (2016) 18-28 Article from SCOAP3: PDF; Draft (restricted): PDF; Elsevier Open Access article: PDF; Fulltext: arXiv:1503.08935 - PDF; CERN-PH-EP-2015-085 - PDF; External link: Preprint
2.
Observation of a new narrow axial-vector meson $a_1(1420)$ / COMPASS collaboration
The COMPASS collaboration at CERN has measured diffractive dissociation of 190 GeV$/c$ pions into the $\pi^-\pi^-\pi^+$ final state using a stationary hydrogen target. A partial-wave analysis (PWA) was performed in bins of $3\pi$ mass and four-momentum transfer using the isobar model and the so far largest PWA model consisting of 88~waves. [...]
arXiv:1501.05732; CERN-PH-EP-2015-015; CERN-PH-EP-2015-015.- Geneva : CERN, 2015-08-19 - 6 p. - Published in : Phys. Rev. Lett. 115 (2015) 082001 APS Open Access article: PDF; Draft (restricted): PDF; Fulltext: CERN-PH-EP-2015-015 - PDF; arXiv:1501.05732 - PDF; External link: Preprint
3.
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
4.
Collins and Sivers asymmetries in muonproduction of pions and kaons off transversely polarised proton / COMPASS collaboration
Measurements of the Collins and Sivers asymmetries for charged pions and charged and neutral kaons produced in semi-inclusive deep-inelastic scattering of high energy muons off transversely polarised protons are presented. The results were obtained using all the available COMPASS proton data, which were taken in the years 2007 and 2010. [...]
arXiv:1408.4405; CERN-PH-EP-2014-213; CERN-PH-EP-2014-213.- Geneva : CERN, 2015-03-31 - 10 p. - Published in : Phys. Lett. B 744 (2015) 250-259 Article from SCOAP3: PDF; Draft (restricted): PDF; Elsevier Open Access article: PDF; Fulltext: CERN-PH-EP-2014-213 - PDF; arXiv:1408.4405 - PDF; External link: Preprint
5.
Odd and Even Partial Waves of $\eta\pi^-$ and $\eta'\pi^-$ in $\pi^-p\to\eta^{(\prime)}\pi^-p$ at $191\,\textrm{GeV}/c$ / COMPASS Collaboration
Exclusive production of $\eta\pi^-$ and $\eta'\pi^-$ has been studied with a $191\,\textrm{GeV}/c$ $\pi^-$ beam impinging on a hydrogen target at COMPASS (CERN). Partial-wave analyses reveal different odd/even angular momentum ($L$) characteristics in the inspected invariant mass range up to $3\,\textrm{GeV}/c^2$. [...]
arXiv:1408.4286; CERN-PH-EP-2014-204; CERN-PH-EP-2014-204.- Geneva : CERN, 2014-11-30 - 9 p. Article from SCOAP3: PDF; Draft (restricted): PDF; Elsevier Open Access article: PDF; Fulltext: CERN-PH-EP-2014-204 - PDF; S0370269314008685 - XML; arXiv:1408.4286 - PDF;
6.
Search for exclusive photoproduction of Z$_c^{\pm}$(3900) at COMPASS / COMPASS Collaboration
A search for the exclusive production of the $Z_c^{\pm}(3900)$ hadron by virtual photons has been performed in the channel $Z_c^{\pm}(3900)\rightarrow J/\psi \pi^{\pm}$. The data cover the range from 7~GeV to 19~GeV in the centre-of-mass energy of the photon-nucleon system. [...]
arXiv:1407.6186; CERN-PH-EP-2014-180; CERN-PH-EP-2014-180.- Geneva : CERN, 2015-03-06 - 5 p. - Published in : Phys. Lett. B 742 (2015) 330-334 Article from SCOAP3: PDF; Draft (restricted): PDF; Elsevier Open Access article: PDF; Fulltext: arXiv:1407.6186 - PDF; CERN-PH-EP-2014-180 - PDF; External link: Preprint
7.
A Triple-GEM Detector with Pixel Readout for High-Rate Beam Tracking in COMPASS / Nagel, T (Munich, Tech. U.) ; Austregesilo, A (Munich, Tech. U.) ; Haas, F (Munich, Tech. U.) ; Ketzer, B (Munich, Tech. U.) ; Konorov, I (Munich, Tech. U.) ; Krämer, M (Munich, Tech. U.) ; Mann, A (Munich, Tech. U.) ; Paul, S (Munich, Tech. U.)
For its physics program with a high-intensity hadron beam of $2 · 10^{7}$ particles/s, the COMPASS experiment at CERN requires tracking of charged particles scattered by very small angles with respect to the incident beam direction. While good resolution in time and space is mandatory, the challenge is imposed by the high beam intensity, requiring radiation-hard detectors which add very little material to the beam path in order to minimise secondary interactions. [...]
2008 - Published in : 10.1142/9789812819093_0169
In : 10th ICATPP Conference on Astroparticle, Particle, Space Physics, Detectors and Medical Physics Applications, Villa Olmo, Como, Italy, 8 - 12 Oct 2007, pp.1004-1008
8.
Measurement of the Charged-Pion Polarizability / COMPASS Collaboration
The COMPASS collaboration at CERN has investigated pion Compton scattering, $\pi^-\gamma\rightarrow \pi^-\gamma$, at centre-of-mass energy below 3.5 pion masses. The process is embedded in the reaction $\pi^-\mathrm{Ni}\rightarrow\pi^-\gamma\;\mathrm{Ni}$, which is initiated by 190 GeV pions impinging on a nickel target. [...]
arXiv:1405.6377; CERN-PH-EP-2014-109; CERN-PH-EP-2014-109.- Geneva : CERN, 2015-02-10 - 6 p. - Published in : Phys. Rev. Lett. 114 (2015) 062002 APS Open Access article: PDF; Draft (restricted): PDF; Fulltext: arXiv:1405.6377 - PDF; CERN-PH-EP-2014-109 - PDF; External link: Interactions.org article
9.
Spin alignment and violation of the OZI rule in exclusive $\omega$ and $\phi$ production in pp collisions / COMPASS collaboration
Exclusive production of the isoscalar vector mesons $\omega$ and $\phi$ is measured with a 190 GeV$/c$ proton beam impinging on a liquid hydrogen target. Cross section ratios are determined in three intervals of the Feynman variable $x_{F}$ of the fast proton. [...]
arXiv:1405.6376; CERN-PH-EP-2014-096; CERN-PH-EP-2014-096.- Geneva : CERN, 2014-09 - 24 p. - Published in : Nucl. Phys. B 886 (2014) 1078-1101 Article from SCOAP3: PDF; Draft (restricted): PDF; Elsevier Open Access article: PDF; Fulltext: CERN-PH-EP-2014-096 - PDF; S0550321314002399 - XML; arXiv:1405.6376 - PDF;
10.
Measurement of radiative widths of $a_2(1320)$ and $\pi_2(1670)$ / COMPASS Collaboration
The COMPASS Collaboration at CERN has investigated the reaction $\pi^- \gamma \rightarrow \pi^-\pi^-\pi^+$ embedded in the Primakoff reaction of $190~\textrm{GeV}$ pions scattering in the Coulomb field of a lead target, $\pi^- \text{Pb} \rightarrow \pi^-\pi^-\pi^+ \text{Pb}$. Exchange of quasi-real photons is selected by isolating the sharp Coulomb peak observed at momentum transfer below $0.001~(\text{GeV}/c)^2$. [...]
arXiv:1403.2644; CERN-PH-EP-2014-041; CERN-PH-EP-2014-041.- Geneva : CERN, 2014 - 19 p. - Published in : Eur. Phys. J. A 50 (2014) 79 Draft (restricted): PDF; Fulltext: CERN-PH-EP-2014-041 - PDF; arXiv:1403.2644 - PDF; External link: Preprint

CERN Document Server : Намерени са 42 записа   1 - 10следващкрай  отиване на запис:
Виж също: автори с подобни имена
54 Nagel, T
2 Nagel, Thiemo
4 Nagel, Thomas
2 Nagel, Thorsten
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