pp‾→W¯−γX A test of the quark charges

Lakshmibala, S. ; He, X.-G. ; Pakvasa, S. ; Rajasekaran, G. (1986) pp‾→W¯−γX A test of the quark charges Modern Physics Letters A, 1 (4). pp. 277-286. ISSN 0217-7323

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Official URL: http://www.worldscinet.com/mpla/01/0104/S021773238...

Related URL: http://dx.doi.org/10.1142/S0217732386000361


We suggest the experimental study of pp‾→W¯−γX as a test to distinguish between the fractionally charged quark (FCQ) model and the integrally charged quark (ICQ) model. We find that the strong dip in cross section at cos θ =-1/3 (θ) being the angle between the W- and the proton direction in the W-γ c.m. frame) in the FCQ model is washed away in the ICQ model. Thus the presence or absence of this dip provides a clean test to distinguish these two models above color threshold.

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