Nucleon Decay Matrix Elements from Lattice QCD

Details Nucleon Decay Matrix Elements from Lattice QCD Nucleon Decay Matrix Elements from Lattice QCD

2001-03-24

arxiv.org/abs/hep-ph/0103264v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 3 figures as eps-file. Invited talk at 2nd Workshop on Neutrino Oscillations and Their Origin (NOON 2000), Tokyo, Ja

Scientific paper

We present a GUT-model-independent calculation of hadron matrix elements for all dimension-six operators associated with baryon number violating processes using lattice QCD. Our results cover all the matrix elements required to estimate the partial lifetimes of (proton,neutron)$\to$($\pi,K,\eta$) +(${\bar \nu},e^+,\mu^+$) decay modes. We point out the necessity of disentangling two form factors that contribute to the matrix elements; previous calculations did not make the separation, which led to an underestimate of the physical matrix elements. With a correct separation, we find that the matrix elements have values 3-5 times larger than the smallest estimates employed in phenomenological analyses of the nucleon decays, which gives stronger constraints on GUT models. We also find that the values of the matrix elements are comparable with the tree-level predictions of chiral Lagrangian.

Affiliated with

Also associated with

No associations

Rating

Nucleon Decay Matrix Elements from Lattice QCD does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Nucleon Decay Matrix Elements from Lattice QCD, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nucleon Decay Matrix Elements from Lattice QCD will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-294304