Zobrazeno 1 - 10
of 440
pro vyhledávání: '"heavy quark: decay"'
Autor:
Witzel, Oliver
The combination of precise experimental measurements and theoretical predictions allows to extract Cabibbo-Kobayashi-Maskawa (CKM) matrix elements or constrain flavor changing processes in the standard model. Focusing at theoretical predictions, we r
Externí odkaz:
http://arxiv.org/abs/2409.02646
Publikováno v:
Phys. Rev. D 103, 111301 (2021)
Recently, $O(\alpha^3)$ corrections to the muon decay rate and $O(\alpha_s^3)$ to heavy quark decays have been determined by Fael, Sch\"onwald, and Steinhauser. This is the first such perturbative improvement of these important quantities in more tha
Externí odkaz:
http://arxiv.org/abs/2104.05804
Autor:
Witzel Oliver
Publikováno v:
EPJ Web of Conferences, Vol 312, p 04001 (2024)
The combination of precise experimental measurements and theoretical predictions allows to extract Cabibbo-Kobayashi-Maskawa (CKM) matrix elements or constrain flavor changing processes in the standard model. Focusing at theoretical predictions, we r
Externí odkaz:
https://doaj.org/article/a5b776b3223847189452a5f6047cd354
Autor:
Isgur, Nathan
Publikováno v:
Phys.Lett.B448:111-118,1999
I identify a source of \Lambda_{QCD}/m_Q corrections to the assumption of quark-hadron duality in the application of heavy quark methods to inclusive heavy quark decays. These corrections could substantially affect the accuracy of such methods in pra
Externí odkaz:
http://arxiv.org/abs/hep-ph/9811377
Autor:
Isgur, Nathan
Publikováno v:
Phys.Rev.D60:074030,1999
In both the large N_c limit and the valence quark model, semileptonic decays are dominated by resonant final states. Using Bjorken's sum rule in an "unquenched" version of the quark model, I demonstrate that in the heavy quark limit nonresonant final
Externí odkaz:
http://arxiv.org/abs/hep-ph/9904398
Autor:
Corcella, Gennaro, Seymour, Michael H.
Publikováno v:
Phys.Lett. B442 (1998) 417-426
Parton showers are accurate for soft and/or collinear emission, but for a good description of the whole of phase space they need to be supplemented by matrix element corrections. In this paper, we discuss matrix element corrections to the decay t->Wb
Externí odkaz:
http://arxiv.org/abs/hep-ph/9809451
Autor:
Isgur, Nathan
I identify a source of Lambda_{QCD}/m_Q corrections to the assumption of quark-hadron duality in the application of heavy quark methods to inclusive heavy quark semileptonic decays Q->q l nu_l. These corrections could substantially affect the accurac
Externí odkaz:
http://arxiv.org/abs/hep-ph/9809279
Autor:
Petrov, Alexey A.
Publikováno v:
Phys. Rev. D 58, 054004 (1998)
We investigate the impact of the intrinsic heavy quark states on the predicted values of CP asymmetries in the decays of heavy mesons. It is shown that the intrinsic charm contribution, although dynamically suppressed in QCD, is favored by the weak i
Externí odkaz:
http://arxiv.org/abs/hep-ph/9712497
Publikováno v:
Phys.Rev.D53:2491-2505,1996
We calculate the leading perturbative and power corrections to the hadronic invariant mass and energy spectra in semileptonic heavy hadron decays. We apply our results to the $B$ system. Moments of the invariant mass spectrum, which vanish in the par
Externí odkaz:
http://arxiv.org/abs/hep-ph/9507284
Autor:
Manor Ohad
By using the Quark masses series and the framework of variational manifolds, it is possible to reason heavy Quark decay into lighter quarks and present it as part of nature aspiring to eliminate to arbitrary amount of curvature.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0ab2b200bedc2d2604a9974e7683315e