Results 71 to 80 of about 82,911 (161)
Kondo cloud of single heavy quark in cold and dense matter
Physics Letters B, 2017 The Kondo effect is a universal phenomena observed in a variety of fermion systems containing a heavy impurity particle whose interaction is governed by the non-Abelian interaction. At extremely high density, I study the Kondo effect by color exchange in
Shigehiro Yasui
doaj +1 more source
Study of B, $$B_s$$ B s mesons using heavy quark effective theory
European Physical Journal C: Particles and Fields, 2022 Inspired by the lower statistical information in the bottom sector, in this paper, we calculate the masses and the strong decays of excited B and $$B_s$$ B s mesons in the framework of heavy quark effective theory (HQET).
Keval Gandhi, Ajay Kumar Rai
doaj +1 more source
New physics in t-> b W decay at next-to-leading order in QCD
, 2010 We consider contributions of non-standard tbW effective operators to the decay of an unpolarized top quark into a bottom quark and a W gauge boson at next-to-leading order in QCD.
Drobnak, Jure +2 more
core +1 more source
Bottom quark contribution to spin-dependent dark matter detection
Nuclear Physics B, 2016 We investigate a previously overlooked bottom quark contribution to the spin-dependent cross section for Dark Matter (DM) scattering from the nucleon. While the mechanism is relevant to any supersymmetric extension of the Standard Model, for illustrative
Jinmian Li, Anthony W. Thomas
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Short Distance Mass of a Heavy Quark at Order \alpha_s^3
, 1999 The relation between the on-shell quark mass and the mass defined in the modified minimal subtraction scheme is computed up to order \alpha_s^3. Implications for the numerical values of the top and bottom quark masses are discussed.
Chetyrkin, K. G., Steinhauser, M.
core +1 more source
An Interview With Peter Rousseeuw
International Statistical Review, Volume 93, Issue 1, Page 1-17, April 2025.Summary Peter J. Rousseeuw is a statistician known mainly for his work on robust statistics and cluster analysis. Among his creations are least trimmed squares regression, the minimum covariance determinant estimator, the partitioning around medoids clustering method and the silhouettes graphical display.
Mia Hubert
wiley +1 more source
Measurements of the bottom quark mass [PDF]
, 2000 I will review new measurements of the b quark mass, presented at this conference by ALEPH and DELPHI. A large set of observables has been used and detailed studies on jet algorithms have been performed.
Dissertori, G.
core +2 more sources
, 2015 A large number of top quarks will be produced at the Large Hadron Collider (LHC) for Run II period. This will allow us to measure the rare processes from the top sector in great details.
Choi, Su Yong +3 more
core +1 more source
Exploring Dark Photon Production and Kinetic Mixing Constraints in Heavy‐Ion Collisions
Astronomische Nachrichten, Volume 346, Issue 3-4, March-May 2025.ABSTRACT Vector U‐bosons, often referred to as “dark photons,” are potential candidates for mediating dark matter interactions. In this study, we outline a procedure to derive theoretical constraints on the upper bound of the kinetic mixing parameter ϵ2MU$$ {\upvarepsilon}^2\left({M}_U\right) $$ using dilepton data from heavy‐ion from SIS to RHIC ...
Adrian William Romero Jorge +3 more
wiley +1 more source
European Physical Journal C: Particles and FieldsWe compute top quark pair production in association with a bottom quark pair at the LHC within the five-flavour scheme, matched to a parton shower, employing the FxFx merging scheme for $$t\bar{t}+\text {jets}$$ t t ¯ + jets production with up to 2 jets ...
Rikkert Frederix, Tetiana Moskalets
doaj +1 more source