Počet záznamů: 1

Azimuthal asymmetries of charged hadrons produced by high-energy muons scattered off longitudinally polarised deuterons

  1. 1.
    0366117 - UPT-D 2012 RIV DE eng J - Článek v odborném periodiku
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    Azimuthal asymmetries of charged hadrons produced by high-energy muons scattered off longitudinally polarised deuterons.
    European Physical Journal C. Roč. 70, 1-2 (2010), s. 39-49 ISSN 1434-6044
    Grant CEP: GA MŠk ME 492
    Výzkumný záměr: CEZ:AV0Z20650511
    Klíčová slova: deep-inelastic-scattering * dependent structure-function * single-spin asymmetries * semiinclusive electroproduction * proton-scattering * distributions * leptoproduction * target * dis * nucleons
    Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače
    Impakt faktor: 3.248, rok: 2010

    Azimuthal asymmetries in semi-inclusive production of positive (h (+)) and negative hadrons (h (-)) have been measured by scattering 160 GeV muons off longitudinally polarised deuterons at CERN. The asymmetries were decomposed in several terms according to their expected modulation in the azimuthal angle phi of the outgoing hadron. Each term receives contributions from one or several spin and transverse-momentum-dependent parton distribution and fragmentation functions. The amplitudes of all phi-modulation terms of the hadron asymmetries integrated over the kinematic variables are found to be consistent with zero within statistical errors, while the constant terms are nonzero and equal for h (+) and h (-) within the statistical errors. The dependencies of the phi-modulated terms versus the Bjorken momentum fraction x, the hadron fractional momentum z, and the hadron transverse momentum p(n)(T) were studied.
    Trvalý link: http://hdl.handle.net/11104/0201201