HERMES

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2018-10-18
12:42
OpenAccess [PUBDB-2018-03832] Preprint/Report
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Longitudinal double-spin asymmetries in semi-inclusive deep-inelastic scattering of electrons and positrons by protons and deuterons
[DESY-18-181; arXiv:1810.07054]
 GO
A comprehensive collection of results on longitudinal double-spin asymmetries is presented for charged pions and kaons produced in semi-inclusive deep-inelastic scattering of electrons and positrons on the proton and deuteron, based on the full HERMES data set. The dependence of the asymmetries on hadron transverse momentum and azimuthal angle extends the sensitivity to the flavor structure of the nucleon beyond the distribution functions accessible in the collinear framework. [...]
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2018-01-19
15:56
OpenAccess [PUBDB-2018-00699] Journal Article/Contribution to a conference proceedings/Contribution to a book

Ratios of helicity amplitudes for hard exclusive $\rho^0$ electroproduction on transversely polarized protons
Proceedings of XXV International Workshop on Deep-Inelastic Scattering and Related Subjects — PoS(DIS2017) - Sissa Medialab Trieste, Italy, 2017. - ISBN - doi:10.22323/1.297.0254
XXV International Workshop on Deep-Inelastic Scattering and Related Subjects, DIS2017, BirminghamBirmingham, UK, 3 Apr 2017 - 7 Apr 20172017-04-032017-04-07
Proceedings of Science (DIS2017), 254 () [10.22323/1.297.0254]  GO
The HERMES experiment collected a wealth of deep-inelastic scattering data using the 27.6 GeV polarized lepton beam at HERA and various pure gas targets, both unpolarized and polarized. This allowed for a series of diverse measurements. [...]
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2017-12-20
09:49
OpenAccess [PUBDB-2017-13807] Conference Presentation (Invited)
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HERMES results on TMDs and GPDs
5th International Workshop on Transverse Polarization Phenomena in Hard Processes, Transversity 2017, LNF / INFN FrascatiFrascati, LNF / INFN Frascati, Italy, 11 Dec 2017 - 15 Dec 20172017-12-112017-12-15  GO
The HERMES experiment collected from 1995 to 2007 a wealth of deep-inelastic scattering data using 27.6 GeV longitudinally polarized electrons and positrons and various unpolarized as well as longitudinally and transversely polarized gas targets. This allowed for a series of diverse measurements. [...]
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2017-12-12
15:53
OpenAccess [PUBDB-2017-13367] Conference Presentation
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Extraction of Helicity Amplitude Ratios from Exclusive $\rho^0$-meson Electroproductionon Transversely Polarized Proton
XVII Workshop on High Energy Spin Physics, DSPIN-17, DubnaDubna, Russia, 11 Sep 2017 - 15 Sep 20172017-09-112017-09-15  GO
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2017-12-12
15:48
OpenAccess [PUBDB-2017-13365] Conference Presentation (Invited)
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Overview of HERMES results
XVII Workshop on High Energy Spin Physics, DSPIN-17, DubnaDubna, Russia, 11 Sep 2017 - 15 Sep 20172017-09-112017-09-15  GO
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2017-12-12
15:37
OpenAccess [PUBDB-2017-13364] Journal Article/Contribution to a conference proceedings
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Ratios of helicity amplitudes for exclusive $\rho^0$ electroproduction on transversely polarized proton
XXIII International Baldin Seminar on High Energy Physics Problems "Relativistic Nuclear Physics and Quantum Chromodynamics", Baldin ISHEPP XXIII, DubnaDubna, Russia, 19 Sep 2016 - 24 Sep 20162016-09-192016-09-24 The European physical journal / Web of Conferences 138, 08005 () [10.1051/epjconf/201713808005]  GO
Exclusive $\rho^0$-meson electroproduction is studied by the HERMES experiment, using the 27.6 GeV longitudinally polarized electron/positron beam of HERA and a transversely polarized hydrogen target, in the kinematic region 1.0 GeV$^2$ < Q$^2$ < 7.0 GeV$^2$, 3.0 GeV < W < 6.3 GeV, and −t′ < 0.4 GeV$^2$. Using an unbinned maximum-likelihoodmethod, 25 parameters are extracted. [...]
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2017-12-12
13:15
OpenAccess [PUBDB-2017-13329] Conference Presentation (Invited)
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Lessons learnt on TMD measurements at HERMES
Spatial and Momentum Tomography of Hadrons and Nuclei, INT 17-3, SeattleSeattle, USA, 28 Aug 2017 - 29 Sep 20172017-08-282017-09-29  GO
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2017-06-14
10:36
OpenAccess [PUBDB-2017-04872] Conference Presentation
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Ratios of helicity amplitudes for hard exclusive $\rho^0$ electroproduction on transversely polarized protons at HERMES
25th International Workshop on Deep-Inelastic Scattering and Related Subjects, DIS2017, University of the Basque Country UPV/EHUBirmingham, University of the Basque Country UPV/EHU, United Kingdom, 3 Apr 2017 - 7 Apr 20172017-04-032017-04-07  GO
The HERMES experiment collected a wealth of deep-inelastic scattering data using the 27.6 GeV polarized lepton beam at HERA and various pure gas targets, both unpolarized and polarized. This allowed for a series of diverse measurements. [...]
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2017-06-14
10:25
OpenAccess [PUBDB-2017-04871] Report/Journal Article
; ; ; et al
Ratios of helicity amplitudes for exclusive $\rho ^0$ electroproduction on transversely polarized protons
[DESY-17-017; arXiv:1702.00345]
Exclusive $\rho^0$-meson electroproduction is studied by the HERMES experiment, using the 27.6 GeV longitudinally polarized electron/positron beam of HERA and a transversely polarized hydrogen target, in the kinematic region 1.0 GeV$^2$ < Q$^2$ < 7.0 GeV$^2$, 3.0 GeV < W < 6.3 GeV, and -t’ < 0.4 GeV$^2$. Using an unbinned maximum-likelihood method, 25 parameters are extracted. [...]
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2017-05-03
11:08
[PUBDB-2017-02196] Journal Article

Hermes: First observation of Compton scattering at the quark level
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