Recent COMPASS Results on Transverse Physics | Zendy

T. Iwata | Zendy

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Recent COMPASS Results on Transverse Physics

Author(s) -

T. Iwata

Publication year - 2011

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.177

H-Index - 75

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.3667304

Subject(s) - physics , deep inelastic scattering , particle physics , compass , transverse plane , hadron , nuclear physics , azimuth , nucleon , polarization (electrochemistry) , muon , distribution function , scattering , large hadron collider , inelastic scattering , optics , quantum mechanics , structural engineering , engineering , chemistry

The investigation of transverse spin and transverse momentum dependent effects in deep inelastic scattering of muons off nucleons is one of the key physics programs of the COMPASS collaboration at CERN. We have investigated the effects from the data obtained with a polarized proton target. In order to access the transversity distribution function, following channels have been analyzed: The azimuthal distribution of single hadrons, the azimuthal dependence of the plane containing hadron pairs, and the measurement of the transverse polarization of lambda hyperons in the final state. The Sivers distribution function which is one of the transverse momentum dependent functions has been investigated also from the azimuthal distribution of single hadrons. Azimuthal asymmetries in unpolarized deep inelastic scattering give important information on the inner structure of the nucleon to access the so-far unmeasured Boer-Mulders function. We have measured these asymmetries using spin-averaged $^{6}$L$_{i}$D

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