Bounds on R-parity violating SUSY Yukawa couplings from semileptonic decays of baryons

نویسنده

  • Farida Tahir
چکیده

We consider tree-level corrections to hypercharge changing semileptonic decays of certain baryons induced by a minimal supersymmetric standard model with explicitly broken R-parity via L-violation. This study leads to a new set of constraints on the products of couplings arising from the LQdc operator of the superpotential. E-mail: [email protected] E-mail: [email protected]

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

R-parity-Violating Supersymmetric Yukawa Couplings: A Mini-review

I review the bounds on the R-parity-violating supersymmetric Yukawa couplings from the considerations of proton stability, n–n̄ oscillation, νe-Majorana mass, neutrino-less double β decay, charged-current universality, e–μ–τ universality, νμ–e scattering, atomic parity violation, νμ deep-inelastic scattering, K -decays, τ -decays, Ddecays and from the precision LEP electroweak observables. I als...

متن کامل

Constraints on R - parity violating supersymmetry from leptonic and semileptonic τ , B d and B s decays

We put constraints on several products of R-parity violating λλ and λλ type couplings from leptonic and semileptonic τ , Bd and Bs decays. Most of them are one to two orders of magnitude better than the existing bounds, and almost free from theoretical uncertainties. A significant improvement of these bounds can be made in high luminosity tau-charm or B factories. PACS number(s): 13.20.He, 13.3...

متن کامل

Sleptons in R-parity Violating Susy

In R-parity violating SUSY models sleptons can be produced singly in ee and qq̄ collisions. The formation of slepton resonances at LEP2 or Tevatron at current energies is an exciting possibility. Existing LEP2 and Tevatron data can be exploited to look for sleptons and , if unsuccessful, to derive bounds on the Yukawa couplings of sleptons to quark and lepton pairs.

متن کامل

τ − → µ − π 0 (η, η ′ ) Decays in New Physics Scenarios beyond the Standard Model

The semileptonic decays τ− → μ−M(M = π, η, η′) could be sensitive probe for new physics scenarios with lepton flavor violation(LFV). Motivated by the recent Belle measurement, we investigate these decays in type III two-Higgs-doublet model (2HDM III), R-parity violating supersymmetric models(RPV SUSY) and flavor changing Z′ model, which have LFV couplings at tree level. Our results have shown t...

متن کامل

Constraining top squark in R-parity violating SUSY model using existing Tevatron data

Signal of lighter top squark has been looked for using Tevatron data in the dielectron plus di-jet channel. We find that the mass of the lighter top squark when it decays dominantly in the electron plus jet channel, can be ruled out up to 220 GeV at 95% C.L. using di-electron data. In the framework of R-parity breaking SUSY model we exclude relevant R-parity violating couplings for a range of t...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1998