Angular analysis of B¯→D2*(→Dπ)ℓν¯ decay and new physics

نویسندگان

چکیده

برای دانلود رایگان 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

Probing New Physics via an Angular Analysis of B →

We show that an angular analysis of B → V1V2 decays yields numerous tests for new physics (NP) in the decay amplitudes. Many of these NP observables are nonzero even if the strong phase differences vanish. For certain observables, neither timedependent measurements nor tagging is necessary. Should a signal for new physics be found, one can place a lower limit on the size of the NP parameters, a...

متن کامل

B-Decay CP Asymmetries, Discrete Ambiguities and New Physics

The first measurements of CP violation in the B system will likely probe sin 2α, sin 2β and cos 2γ. Assuming that the CP angles α, β and γ are the interior angles of the unitarity triangle, we show that these measurements determine the angle set (α, β, γ) except for a twofold discrete ambiguity. If one allows for the possibility of new physics, the presence of this discrete ambiguity can make i...

متن کامل

Angular analysis of the decay Λ b → Λ ( → Nπ ) ` + ` −

We study the differential decay rate for the rare Λb → Λ(→ Nπ)`+`− transition, including a determination of the complete angular distribution, assuming unpolarized Λb baryons. On the basis of a properly chosen parametrization of the various helicity amplitudes, we provide expressions for the angular observables within the Standard Model and a subset of new physics models with chirality-flipped ...

متن کامل

Rare B → l+l−γ decay and new physics effects

Using the most general, model independent form of the effective Hamiltonian rare decays B → l+l−γ (l = μ, τ) are studied. The sensitivity of the photon energy distribution and branching ratio to the new Wilson coefficients is investigated. PACS number(s): 12.60.–i, 13.20.–v, 13.20.He e-mail: [email protected] e-mail: [email protected] e-mail: [email protected]

متن کامل

New Physics Contributions to the B → Φks Decay 1

Recent measurements of the time-dependent CP asymmetry of theB → φKS decay give results whose central values differ from standard model expectations. It is shown how such data can be used to identify new physics contributions in a model-independent manner. In general, a sizeable new amplitude with nontrivial weak and strong phases would be required to explain current data. Improvement in the qu...

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: 2020

ISSN: 2470-0010,2470-0029

DOI: 10.1103/physrevd.101.033007