Results 11 to 20 of about 48,672 (174)

Neutrinos and SU(3) Family Gauge Symmetry [PDF]

, 2006
We include the standard-model (SM) leptons in a recently proposed framework for the generation of quark mass ratios and Cabibbo-Kobayashi-Maskawa (CKM) mixing angles from an SU(3) family gauge interaction.
Maurizio Piai, Thomas Appelquist, Yang Bai, Z. G. Berezhiani, Z. G. Berezhiani   +4 more
core   +2 more sources

R(D ∗), |V cb |, and the Heavy Quark Symmetry relations between form factors

Journal of High Energy Physics, 2017
Stringent relations between the B (∗) → D (∗) form factors exist in the heavy quark limit and the leading symmetry breaking corrections are known. We reconsider their uncertainty and role in the analysis of recent Belle data for B → D (∗)ℓν with model ...
Dante Bigi, Paolo Gambino, Stefan Schacht   +2 more
doaj   +1 more source

TVID 2: evaluation of planar-type three-loop self-energy integrals with arbitrary masses

Journal of High Energy Physics, 2020
We present TVID 2, a program to numerically evaluate an important class of planar three-loop self-energy master integrals with arbitrary masses. As with the predecessor version (TVID 1) the integrals are separated into a known piece, containing the UV ...
Stefan Bauberger, Ayres Freitas, Daniel Wiegand   +2 more
doaj   +1 more source

A semi-analytic method to compute Feynman integrals applied to four-loop corrections to the MS ¯ $$ \overline{\mathrm{MS}} $$ -pole quark mass relation

Journal of High Energy Physics, 2021
We describe a method to numerically compute multi-loop integrals, depending on one dimensionless parameter x and the dimension d, in the whole kinematic range of x. The method is based on differential equations, which, however, do not require any special
Matteo Fael, Fabian Lange, Kay Schönwald, Matthias Steinhauser   +3 more
doaj   +1 more source

Discovery potential for a charged Higgs boson decaying in the chargino-neutralino channel of the ATLAS detector at the LHC [PDF]

, 2005
We have investigated charged Higgs boson production via the gluon-bottom quark mode, gb -> tH+, followed by its decay into a chargino and a neutralino. The calculations are based on masses and couplings given by the Minimal Supersymmetric Standard Model (
Abdullin, Assamagan, Bisset, Bisset, C. Hansen, Collaboration, Collaboration, Corcella, Frixione, Haber, Higgs, K. Assamagan, Miller, Moretti, N. Gollub, Nilles, T. Ekelöf   +16 more
core   +2 more sources

The heavy quark expansion for inclusive semileptonic charm decays revisited

Journal of High Energy Physics, 2019
The Heavy Quark Expansion (HQE) has become an extremely powerful tool in flavor physics. For charm decays, where the expansion parameters α s (m c ) and ΛQCD /m c are bigger than for bottom decays, it remains to be seen if the HQE can be applied with ...
Matteo Fael, Thomas Mannel, K. Keri Vos
doaj   +1 more source

Leading fermionic three-loop corrections to electroweak precision observables

Journal of High Energy Physics, 2020
Future electron-position colliders, such as the CEPC, FCC-ee, and ILC have the capability to dramatically improve the experimental precision for W and Z-boson masses and couplings. This would enable indirect probes of physics beyond the Standard Model at
Lisong Chen, Ayres Freitas
doaj   +1 more source

Custodial Isospin Violation in the Lee-Wick Standard Model [PDF]

, 2010
We analyze the tension between naturalness and isospin violation in the Lee-Wick Standard Model (LW SM), by computing tree-level and fermionic one-loop contributions to the post-LEP electroweak parameters and the Zbb coupling.
Arsham Farzinnia, Elizabeth H. Simmons, G. Altarelli, R. Barbieri, R. Sekhar Chivukula, Roshan Foadi   +5 more
core   +1 more source

Top-quark mass determination from t-channel single top production at the LHC

Journal of High Energy Physics, 2021
We study the determination of the top-quark mass using leptonic observables in t-channel single top-quark production at the LHC. We demonstrate sensitivity of transverse momentum of the charged lepton on the input top-quark mass.
Mei Sen Gao, Shu Run Yuan, Jun Gao
doaj   +1 more source

SUSY_FLAVOR v2.5: a computational tool for FCNC and CP-violating processes in the MSSM [PDF]

, 2013
We present SUSY_FLAVOR version 2.5 - a Fortran 77 program that calculates low-energy flavor observables in the general $R$-parity conserving MSSM. For a set of MSSM parameters as input, the code gives predictions for: 1.
A. Crivellin, A. Dedes, Aaij, Abulencia, Acciarri, Ahn, Allanach, Allanach, Altmannshofer, Arnowitt, Arnowitt, Artamonov, Aubert, Aubert, Aubert, Babu, Baker, Belanger, Bennett, Borzumati, Brod, Buchalla, Buchalla, Buras, Buras, Buras, Buras, Buras, Buras, Buras, Cadoret, Carena, Carena, Chankowski, Chetyrkin, Chetyrkin, Crivellin, Crivellin, Crivellin, Crivellin, Crivellin, Crivellin, Crivellin, Dedes, Dedes, Dedes, Degrassi, Djouadi, D’Ambrosio, Ellwanger, Foster, Girrbach, Golden, Gondolo, Grzadkowski, Haber, Hall, Hall, Hall, Hamzaoui, Heinemeyer, Heister, Herrlich, Herrlich, Hofer, Hou, Isidori, Isidori, Isidori, J. Rosiek, Lahanas, Lee, Mahmoudi, Manohar, Martin, Mescia, Misiak, Nakamura, Nilles, P. Tanedo, P.H. Chankowski, Pokorski, Porod, Regan, Rosiek, Rosiek, Rosiek, Rosiek, S. Jäger, Skands, Urban, Van Dyck, Wolfenstein   +92 more
core   +2 more sources