Lepton Polarization in Neutrino-Nucleon Interactions

2); (2) Moscow; 3); (3) Irkutsk U.; 4) ((1) Dubna; (4) Firenze U. & INFN; Firenze); ITEP; JINR; Konstantin S. Kuzmin (1

arxiv: hep-ph/0312107 · v2 · submitted 2003-12-08 · ✦ hep-ph · astro-ph· nucl-th

Lepton Polarization in Neutrino-Nucleon Interactions

Konstantin S. Kuzmin (1 , 2) , Vladimir V. Lyubushkin (1 , 3) , Vadim A. Naumov (1 , 4) ((1) Dubna , JINR , (2) Moscow

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ITEP (3) Irkutsk U. (4) Firenze U. & INFN Firenze)

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classification ✦ hep-ph astro-phnucl-th

keywords leptonpolarizationantineutrinobrieflycasescollisionsconsiderdensity

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We derive generic formulas for the polarization density matrix of leptons produced in neutrino and antineutrino collisions and briefly consider some important particular cases. Next we employ the general formalism in order to include the final lepton mass and spin into the popular model by Rein and Sehgal for single pion neutrinoproduction.

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Lepton Polarization in Neutrino-Nucleon Interactions

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