Electroweak corrections to theH→tt¯ decay rate

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

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

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Electroweak corrections to the toponium decay width

We discuss one-loop electroweak corrections to the decay width of toponium. We calculate the energy-level shifts by expanding around the solution of the Bethe-Salpeter equation in the instantaneous approximation, in analogy with the positronium case. We show that first-order electroweak effects are suppressed by at least four powers of the strong coupling constant, and are therefore negligible ...

متن کامل

Electroweak Corrections to the Top Quark Decay

We have calculated the one-loop electroweak corrections to the decay t→ bW, including the counterterm for the CKM matrix elements Vtb. Previous calculations used an incorrect δVtb that led to a gauge dependent amplitude. However, since the contribution stemming from δVtb is small, those calculations only underestimate the width by roughly one part in 10. PACS number(s): 12.15.Lk, 11.10.Gh, 12.1...

متن کامل

NLO Electroweak Corrections to Higgs Decay to Two Photons

The production of the Standard Model Higgs boson in photon-photon collisions represents an interesting mechanism for measuring the partial width Γ(H → γγ) with a 3% accuracy at an upgrade option of the International Linear Collider (see [2] and references therein). Therefore, the computation of radiative corrections to the leading order (LO) decay width [3] has been an active field of research ...

متن کامل

Nonfactorizable QCD and Electroweak Corrections to the Hadronic Z Boson Decay Rate.

We present an analysis of two-loop mixed QCD and electroweak corrections to the decay of the Z boson into light quarks. We find that the naive factorization of QCD and electroweak corrections does not describe correctly the two-loop effects. The nonfactorizable corrections shift the width of the Z boson by approximately −0.59(3) MeV and increase the central value of the strong coupling constant...

متن کامل

Two Loop Electroweak Bosonic Corrections to the Muon Decay Lifetime

The muon decay lifetime (τμ) has been used for long as an input parameter for high precision predictions of the Standard Model (SM). It allows for an indirect determination of the mass of the W boson (MW ), which suffers currently from a large experimental error of 33 MeV [1], one order of magnitude worse than that of the Z boson mass (MZ). A reduction of this error by LHC to 15 MeV [2] and by ...

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

ژورنال

عنوان ژورنال: Physical Review D

سال: 1994

ISSN: 0556-2821

DOI: 10.1103/physrevd.50.4563