Nucleon decay matrix elements for domain-wall fermions
نویسندگان
چکیده
منابع مشابه
Nucleon Decay Matrix Elements for Domain-Wall Fermions
Nucleon decay is one of the most important aspect that any (SUSY) GUT model has. In low-energy effective theories it is represented by dimension six operators made of one lepton field and three quark fields. In the decay of p → π + e, for example, we need to calculate hadronic matrix element of the three quark operator O R/L;L = ǫ(uCPR/Ld)PLu with initial proton and final pion states, where C i...
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The structure of the nucleon is one of the fundamental problems that lattice QCD can address. In the last few years, substantial efforts have been made by several groups [1,2,3,4] in calculating the non-perturbative matrix elements relevant to nucleon structure. Up to now only Wilson fermions, improved and unimproved, have been used in both the quenched approximation and in full QCD. In this re...
متن کاملNucleon Decay with Domain-Wall Fermions
There are two methods to calculate nucleon decay matrix elements using lattice QCD. One is the direct calculation of the matrix elements dealing with threeand various two-point functions [1,2,3]. The other is the indirect method where one relies on chiral perturbation theory whose low energy constants are calculated on the lattice [4,5,1,2,3]. The former method is preferable but requires huge c...
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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)→(π, K, η) +(ν̄, e, μ) decay modes. We point out the necessity of disentangling two form factors that contribute to the ...
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 2003
ISSN: 0920-5632
DOI: 10.1016/s0920-5632(03)01560-3