Proton decay matrix elements with 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...
متن کاملNucleon matrix elements with domain wall fermions
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 کاملDecays with Domain Wall Fermions: Lattice Matrix Elements
We present a lattice calculation of the K → π and K → 0 matrix elements of the ∆S = 1 effective weak Hamiltonian which can be used to determine ǫ′/ǫ and the ∆I = 1/2 rule for K decays in the Standard Model. The matrix elements for K → ππ decays are related to K → π and K → 0 using lowest order chiral perturbation theory. We also present results for the kaon B parameter, BK . Our quenched domain...
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...
متن کاملStaggered Domain Wall Fermions
Staggered Domain Wall Fermions (SDWF) combine the attractive chiral properties of staggered fermions with those of domain wall fermions. SDWF describe four flavors with exact U(1)×U(1) flavor chiral symmetry. An extra lattice dimension is introduced and the full SU(4)×SU(4) flavor chiral symmetry is recovered as its size is increased. Here, the free theory of SDWF is described and a preliminary...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review D
سال: 2007
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.75.014507