Soft rescattering in DIS: effects of helicity flip | Zendy

Paul Hoyer | Zendy; Matti Järvinen | Zendy

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Soft rescattering in DIS: effects of helicity flip

Author(s) -

Paul Hoyer,

Matti Järvinen

Publication year - 2005

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2005/10/080

Subject(s) - helicity , physics , asymmetry , particle physics , parton , twist , quantum chromodynamics , quark , symmetry (geometry) , perturbative qcd , spin (aerodynamics) , quantum electrodynamics , geometry , mathematics , thermodynamics

Soft rescattering in hard QCD processes may involve non-perturbative, chiralsymmetry breaking interactions. We find that rescattering which changes thehelicity of the struck quark gives rise to a leading twist single spinasymmetry in semi-inclusive DIS, the angular dependence of which is the same asthat usually ascribed to the Collins effect. We argue that helicity-changing rescattering can contribute also to$k_\perp$-integrated parton distributions.Comment: 9 pages, 1 figure. v2: reference adde

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