Contact interaction explanation of HERA events and SU(3)C SU(2)L U(1)Y invariance Academic Article

abstract

• We reexamine the contact interaction hypothesis for excess high-Q 2 events seen at HERA in e + p - e + X scattering. We consider the most general structure of contact interactions insisting on SU(3) C SU(2) L U(1) Y invariance. Apart from constraints for e + e - qq, Drell-Yan and atomic parity violation experiments, we find stringent constraints from neutrino deep inelastic data, provided one assumes lepton universality. A possible choice of contact terms that escape present bounds is still possible, althought new data from FERMILAB and LEP should further constrain such a possibility. 1997 Elsevier Science B.V.

authors

• Dutta, Bhaskar

published proceedings

• Physics Letters B

author list (cited authors)

• Deshpande, N. G., Dutta, B., & He, X.

citation count

• 10

complete list of authors

• Deshpande, NG||Dutta, B||He, Xiao-Gang

publication date

• September 1997

publisher

• Elsevier  Publisher

published in

• Physics Letters B  Journal

Digital Object Identifier (DOI)

• 10.1016/s0370-2693(97)00856-3

start page

• 288

end page

• 292

volume

• 408

issue

• 1-4

URL

• http%3A%2F%2Fdx.doi.org%2F10.1016%2Fs0370-2693%2897%2900856-3