New target transverse spin dependent azimuthal asymmetries from COMPASS experiment - High Energy Physics - ExperimentReportar como inadecuado




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Abstract: In general, eight target transverse spin-dependent azimuthal modulations areallowed in semi inclusive deep inelastic scattering of polarized leptons on atransversely polarized target. In the QCD parton model four of theseasymmetries can be interpreted within the leading order approach. Two of them,namely Collins and Sivers effects were already measured by HERMES and COMPASSexperiments. Other two leading twist and remaining four azimuthal asymmetrieswhich can be interpreted as twist-three contributions have been measured forthe first time in COMPASS using a 160 GeV-c longitudinally polarized$P {beam}\simeq -0.8$ muon beam and a transversely polarized $^6LiD$ target.We present here the preliminary results from the 2002-2004 data.



Autor: Bakur Parsamyan

Fuente: https://arxiv.org/







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