Experimental and Theoretical Results for Weak Charge Current Backward Proton Production

Details Experimental and Theoretical Results for Weak Charge Current Backward Proton Production Experimental and Theoretical Results for Weak Charge Current Backward Proton Production

1999-02-09

arxiv.org/abs/hep-ph/9902281v1

Phys.Rev. D63 (2001) 117301

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 5 figures

Scientific paper

10.1103/PhysRevD.63.117301

In this paper, we do three things in the study of deuteron break-up by high energy neutrino beams. (1) We present previously unpublished data on neutrino induced backward protons from deuteron targets; (2) we calculate the contributions from both the two-nucleon (2N) and six-quark (6q) deuteron components, which depend upon the overall normalization of the part that is 6q; and (3) we suggest other signatures for distinguishing the 2N and 6q clusters. We conclude that the 6q cluster easily explains the shape of the high momentum backward proton spectrum, and its size is nicely explained if the amount of 6q is one or a few percent by normalization of the deuteron. There is a crossover, above which the 6q contribution is important or dominant, at 300--400 MeV/c backward proton momentum.

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