On the forward-backward charge asymmetry in e+e- -annihilation into hadrons at high energies

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dc.creatorErmolaev, B. I.
dc.creatorGreco, M.
dc.creatorTroyan, S. I.
dc.date2002-05-23
dc.date2002-11-11
dc.date.accessioned2026-07-07T11:47:33Z
dc.date.available2026-07-07T11:47:33Z
dc.descriptionThe forward-backward asymmetry in e+ e- annihilation into a quark-antiquark pair is considered in the double-logarithmic approximation at energies much higher than the masses of the weak bosons. It is shown that after accounting to all orders for the exchange of virtual photons and W, Z -bosons one is lead to the following effect (asymmetry): quarks with positive electric charge (e.g. u, \bar{d}) tend to move in the e+ - direction whereas quarks with negative charges (e.g. d, \bar{u}) tend to move in the e- - direction. The value of the asymmetry grows with increasing energy when the produced quarks are within a cone with opening angle, in the cmf, θ_0\sim 2M_Z/\sqrt{s} around the e+e- -beam. Outside this cone, at θ_0 << θ<< 1, the asymmetry is inversely proportional to θ.
dc.description17 Pages, 2 Tables, 4 Figures. Hadronization effects to the asymmetry are considered with more details
dc.identifierhttps://arxiv.org/abs/hep-ph/0205260
dc.identifierhttp://arxiv.org/abs/hep-ph/0205260
dc.identifierPhys.Rev.D67:014017,2003
dc.identifierdoi:10.1103/PhysRevD.67.014017
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/202610
dc.subjectHigh Energy Physics - Phenomenology
dc.titleOn the forward-backward charge asymmetry in e+e- -annihilation into hadrons at high energies
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