Azimuthal single- and double-spin asymmetries in semi-inclusive deep-inelastic lepton scattering by transversely polarized protons

Autor: P. E. Reimer, Vitaly Shutov, Wolfgang Lorenzon, G. Schnell, P. Lenisa, Ralf Kaiser, B. Seitz, V. Muccifora, P. Di Nezza, G. Nazaryan, T. A. Shibata, R.O. Avakian, P. Kravchenko, Dirk Ryckbosch, A. Rostomyan, Alessandro Bacchetta, B. Zihlmann, L. L. Pappalardo, L. Felawka, N. Akopov, G. Gavrilov, C. Riedl, W. Augustyniak, L. Lagamba, S. Yaschenko, G. Karyan, G. P. Capitani, Frank Ellinghaus, G. Ciullo, E. R. Kinney, Wouter Deconinck, H. E. Jackson, E. De Sanctis, B. Marianski, Y. Naryshkin, M. Contalbrigo, A. Airapetian, V. Gharibyan, Z. Akopov, G. Elbakian, P. Zupranski, Adel Terkulov, A. Ivanilov, R. De Leo, E. C. Aschenauer, A. Nass, S. I. Manaenkov, H. Marukyan, G. Rosner, S. Belostotski, A. Fantoni, A. Movsisyan, V. A. Kozlov, S. Joosten, D. Veretennikov, M. Diefenthaler, M. Statera, D. Zeiler, Y. Van Haarlem, A. Kisselev, Y. Holler, J. G. Rubin, Michael Tytgat, I. Lehmann, A. R. Reolon, V. Bryzgalov, E. Cisbani, C. B. Van Hulse, Y. Miyachi, D. Hasch, I. Vilardi, Michael Düren, W.-D. Nowak, L. Lapikás, Andreas Schäfer, Klaus Rith
Rok vydání: 2020
Předmět:
dimension: 3
Nuclear Theory
HERMES
Parton
SIDIS
01 natural sciences
PARTON
High Energy Physics - Experiment
Sivers function
High Energy Physics - Experiment (hep-ex)
polarized beam [p]
High Energy Physics - Phenomenology (hep-ph)
semi-inclusive reaction [deep inelastic scattering]
Polarization
leptoproduction [pi]
Nuclear Experiment (nucl-ex)
Collins
Nuclear Experiment
Spin-½
Quantum chromodynamics
Physics
FINAL-STATE INTERACTIONS
deep inelastic scattering: semi-inclusive reaction
PIONS
lepton: beam
ddc:530
QUARK POLARIZATION
scattering [lepton]
anti-p
beam [lepton]
High Energy Physics - Phenomenology
modulation
DESY HERA Stor
Fixed target experiments
kinematics
3 [dimension]
QCD
FRAGMENTATION
spin: asymmetry
electron p: deep inelastic scattering
Nuclear and High Energy Physics
DRELL-YAN
transverse [polarization]
p: polarized beam
Socio-culturale
FOS: Physical sciences
lepton: scattering
SIVERS ASYMMETRIES
Nuclear physics
phase space
PE2_2
Pion
PE2_1
0103 physical sciences
polarization: transverse
DISTRIBUTIONS
lcsh:Nuclear and particle physics. Atomic energy. Radioactivity
010306 general physics
PE2_3
pi: leptoproduction
010308 nuclear & particles physics
Scattering
ELECTROPRODUCTION
530 Physik
Orientation (vector space)
Antiproton
deep inelastic scattering [electron p]
lcsh:QC770-798
High Energy Physics::Experiment
asymmetry [spin]
experimental results
Lepton
Zdroj: Journal of High Energy Physics, Vol 2020, Iss 12, Pp 1-86 (2020)
JOURNAL OF HIGH ENERGY PHYSICS
Journal of high energy physics 2020(12), 010 (2020). doi:10.1007/JHEP12(2020)010
Journal of High Energy Physics
ISSN: 1029-8479
1126-6708
DOI: 10.1007/jhep12(2020)010
Popis: Journal of high energy physics 2020(12), 010 (2020). doi:10.1007/JHEP12(2020)010
A comprehensive set of azimuthal single-spin and double-spin asymmetries in semi-inclusive leptoproduction of pions, charged kaons, protons, and antiprotons from transversely polarized protons is presented. These asymmetries include the previously published HERMES results on Collins and Sivers asymmetries, the analysis of which has been extended to include protons and antiprotons and also to an extraction in a three-dimensional kinematic binning and enlarged phase space. They are complemented by corresponding results for the remaining four single-spin and four double-spin asymmetries allowed in the one-photon-exchange approximation of the semi-inclusive deep-inelastic scattering process for target-polarization orientation perpendicular to the direction of the incoming lepton beam. Among those results, significant non-vanishing $\cos(\phi−\phi_S)$ modulations provide evidence for a sizable worm-gear (II) distribution, $g_{1T}(x,p_T^2)$. Most of the other modulations are found to be consistent with zero with the notable exception of large $\sin(\phi_S)$ modulations for charged pions and $K^+$.
Published by SISSA, [Trieste]
Databáze: OpenAIRE
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