An upper bound on the total cross-section for electroweak baryon number violation

Details An upper bound on the total cross-section for electroweak baryon number violation An upper bound on the total cross-section for electroweak baryon number violation

2003-07-02

arxiv.org/abs/hep-ph/0307034v1

JHEP 0310 (2003) 008

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 2 figures

Scientific paper

10.1088/1126-6708/2003/10/008

An upper bound on the total cross-section of s-wave electroweak instanton/sphaleron induced baryon plus lepton number violating processes is presented. It is obtained by exploiting a recently reported lower bound on the corresponding tunneling suppression exponent and by estimating the pre-exponential factor. We find that the present knowledge about electroweak baryon plus lepton number violating processes still allows their eventual observability at the Very Large Hadron Collider, even as pure s-wave scattering. A possibly observable rate at cosmic ray facilities and neutrino telescopes is presently not excluded, but requires a substantial contribution from higher partial waves.

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