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Transverse Spin Physics at COMPASS

The investigation of transverse spin and transverse momentum effects in deep inelastic scattering is one of the key physics programs of the COMPASS collaboration. Three channels have been analyzed at COMPASS to access the transversity distribution function: The azimuthal distribution of single hadro...

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Autor principal: Schill, Christian
Lenguaje:eng
Publicado: 2010
Materias:
Acceso en línea:https://dx.doi.org/10.1016/j.nuclphysbps.2010.10.013
http://cds.cern.ch/record/1289801
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author Schill, Christian
author_facet Schill, Christian
author_sort Schill, Christian
collection CERN
description The investigation of transverse spin and transverse momentum effects in deep inelastic scattering is one of the key physics programs of the COMPASS collaboration. Three channels have been analyzed at COMPASS to access the transversity distribution function: The azimuthal distribution of single hadrons, involving the Collins fragmentation function, the azimuthal dependence of the plane containing hadron pairs, involving the two-hadron interference fragmentation function, and the measurement of the transverse polarization of $\Lambda$ hyperons in the final state. Azimuthal asymmetries in unpolarized semi-inclusive deep-inelastic scattering give important information on the inner structure of the nucleon as well, and can be used to estimate both the quark transverse momentum $k_{T}$ in an unpolarized nucleon and to access the so-far unmeasured Boer-Mulders function. COMPASS has measured these asymmetries using spin-averaged $^{6}$LiD data.
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institution Organización Europea para la Investigación Nuclear
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spelling cern-12898012021-07-16T00:43:26Zdoi:10.1016/j.nuclphysbps.2010.10.013http://cds.cern.ch/record/1289801engSchill, ChristianTransverse Spin Physics at COMPASSParticle Physics - ExperimentThe investigation of transverse spin and transverse momentum effects in deep inelastic scattering is one of the key physics programs of the COMPASS collaboration. Three channels have been analyzed at COMPASS to access the transversity distribution function: The azimuthal distribution of single hadrons, involving the Collins fragmentation function, the azimuthal dependence of the plane containing hadron pairs, involving the two-hadron interference fragmentation function, and the measurement of the transverse polarization of $\Lambda$ hyperons in the final state. Azimuthal asymmetries in unpolarized semi-inclusive deep-inelastic scattering give important information on the inner structure of the nucleon as well, and can be used to estimate both the quark transverse momentum $k_{T}$ in an unpolarized nucleon and to access the so-far unmeasured Boer-Mulders function. COMPASS has measured these asymmetries using spin-averaged $^{6}$LiD data.The investigation of transverse spin and transverse momentum effects in deep inelastic scattering is one of the key physics programs of the COMPASS collaboration. Three channels have been analyzed at COMPASS to access the transversity distribution function: The azimuthal distribution of single hadrons, involving the Collins fragmentation function, the azimuthal dependence of the plane containing hadron pairs, involving the two-hadron interference fragmentation function, and the measurement of the transverse polarization of Lambda hyperons in the final state. Azimuthal asymmetries in unpolarized semi-inclusive deep-inelastic scattering give important information on the inner structure of the nucleon as well, and can be used to estimate both the quark transverse momentum k_T in an unpolarized nucleon and to access the so-far unmeasured Boer-Mulders function. COMPASS has measured these asymmetries using spin-averaged 6LiD data.arXiv:1009.0819QCD10-PROCEEDINGSQCD10 proceedingsQCD10 PROCEEDINGSoai:cds.cern.ch:12898012010-09-07
spellingShingle Particle Physics - Experiment
Schill, Christian
Transverse Spin Physics at COMPASS
title Transverse Spin Physics at COMPASS
title_full Transverse Spin Physics at COMPASS
title_fullStr Transverse Spin Physics at COMPASS
title_full_unstemmed Transverse Spin Physics at COMPASS
title_short Transverse Spin Physics at COMPASS
title_sort transverse spin physics at compass
topic Particle Physics - Experiment
url https://dx.doi.org/10.1016/j.nuclphysbps.2010.10.013
http://cds.cern.ch/record/1289801
work_keys_str_mv AT schillchristian transversespinphysicsatcompass