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27 April 2024

» arxiv » 1305.2234

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Measurement of Muon Antineutrino Quasi-Elastic Scattering on a Hydrocarbon Target at E_{ u} ~ 3.5 GeV
MINERvA collaboration ; L. Fields ; J. Chvojka ; L. Aliaga ; O. Altinok ; A. Bodek ; D. Boehnlein ; R. Bradford ; W.K. Brooks ; H. Budd ; A. Butkevich ; D.A.M. Caicedo ; C.M. Castromonte ; M.E. Christy ; H. da Motta ; D.S. Damiani ; I. Danko ; M. Datta ; M. Day ; R. DeMaat ; J. Devan ; G.A. Diaz ; S.A. Dytman ; B. Eberly ; D.A. Edmondson ; J. Felix ; T. Fitzpatrick ; G.A. Fiorentini ; A.M. Gago ; H. Gallagher ; B. Gobbi ; R. Gran ; D.A. Harris ; A. Higuera ; I.J. Howley ; K. Hurtado ; M. Jerkins ; T. Kafka ; M.O. Kanter ; C. Keppel ; M. Kordosky ; A.H. Krajeski ; S.A. Kulagin ; T. Le ; A.G. Leister ; G. Maggi ; E. Maher ; S. Manly ; W.A. Mann ; C.M. Marshall ; K.S. McFarland ; C.L. McGivern ; A.M. McGowan ; A. Mislivec ; J.G. Morfin ; J. Mousseau ; D. Naples ; J.K. Nelson ; G. Niculescu ; I. Niculescu ; N. Ochoa ; C.D. O'Connor ; J. Osta ; J.L. Palomino ; V. Paolone ; J. Park ; C.E. Patrick ; G.N. Perdue ; C. Pena ; L. Rakotondravohitra ; R. D. Ransome ; H. Ray ; L. Ren ; P.A. Rodrigues ; K.E. Sassin ; H. Schellman ; D.W. Schmitz ; R.M. Schneider ; E.C. Schulte ; P. Sedita ; C. Simon ; F.D. Snider ; M.C. Snyder ; J.T. Sobczyk ; C.J. Solano Salinas ; N. Tagg ; W. Tan ; B.G. Tice ; G. Tzanakos ; J.P. Velasquez ; J. Walding ; T. Walton ; J. Wolcott ; B.A. Wolthuis ; G. Zavala ; D. Zhang ; B.P.Ziemer ;
Date:	10 May 2013
Abstract:	We have isolated muon anti-neutrino charged-current quasi-elastic interactions occurring in the segmented scintillator tracking region of the MINERvA detector running in the NuMI neutrino beam at Fermilab. We measure the flux-averaged differential cross-section, d{sigma}/dQ^2, and compare to several theoretical models of quasi-elastic scattering. Good agreement is obtained with a model where the nucleon axial mass, M_A, is set to 0.99 GeV/c^2 but the nucleon vector form factors are modified to account for the observed enhancement, relative to the free nucleon case, of the cross-section for the exchange of transversely polarized photons in electron-nucleus scattering. Our data at higher Q^2 favor this interpretation over an alternative in which the axial mass is increased.
Source:	arXiv, 1305.2234
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