Results 51 to 60 of about 12,458,012 (347)
Inclusive semi-leptonic B meson decay structure functions from lattice QCD [PDF]
, 2017 We propose a method to non-perturbatively calculate the forward-scattering matrix elements relevant to inclusive semi-leptonic B meson decays. Corresponding hadronic structure functions at unphysical kinematics are accessible through lattice QCD ...
S. Hashimoto
semanticscholar +1 more source
Journal of High Energy Physics, 2020 Employing the systematic framework of soft-collinear effective theory (SCET) we perform an improved calculation of the leading-power contributions to the double radiative B d,s -meson decay amplitudes in the heavy quark expansion by including the ...
Yue-Long Shen +2 more
doaj +1 more source
SU(3) analysis of fully-light tetraquarks in heavy meson weak decays
European Physical Journal C: Particles and Fields, 2021 We perform a SU(3) analysis for both semi-leptonic and non-leptonic heavy meson weak decays into a pseudoscalar meson and a fully-light tetraquark in 10 or 27 representation.
Yu-Ji Shi, Ye Xing, Zhen-Xing Zhao
doaj +1 more source
Towards an automated tool to evaluate the impact of the nuclear modification of the gluon density on quarkonium, D and B meson production in proton–nucleus collisions [PDF]
, 2016 We propose a simple and model-independent procedure to account for the impact of the nuclear modification of the gluon density as encoded in nuclear collinear PDF sets on two-to-two partonic hard processes in proton–nucleus collisions.
J. Lansberg, H. Shao
semanticscholar +1 more source
Physics Letters B, 1987 Abstract B mesons have been reconstructed in five decay channels of the type B →D ∗ ±nπ(n=1,2,3) using data accumulated by the ARGUS experiment at the e + e − storage ring DORIS II at DESY. In total, we find 40 neutral B mesons above a background of 15±6 events with a mass of (5278.2±1.0±3.0) MeV/ c 2 and 32 charged B mesons above a ...
H. Albrecht +72 more
openaire +3 more sources
The light invisible boson in FCNC decays of B and $$B_c$$ B c mesons
European Physical Journal C: Particles and Fields, 2021 In this paper, we study the FCNC decay processes of B and $$B_c$$ B c meson, in which one invisible particle is emitted. Both the spin-0 and spin-1 cases are considered.
Geng Li +3 more
doaj +1 more source
Theory Status - Puzzles in B Meson Decays and LFU?
SciPost Physics Proceedings, 2019 Currently B meson puzzles motivate many studies of New Physics due to the observed deviations from the Standard Model predictions. There are two B meson puzzles, RD(∗) and RK(∗).
Svjetlana Fajfer
doaj +1 more source
The spread of non‐native species
Biological Reviews, EarlyView.ABSTRACT The global redistribution of species through human agency is one of the defining ecological signatures of the Anthropocene, with biological invasions reshaping biodiversity patterns, ecosystem processes and services, and species interactions globally.
Phillip J. Haubrock +16 more
wiley +1 more source
Developing a macroecology for human‐altered ecosystems
Ecography, EarlyView.Although anthropogenically‐induced ecological disruptions are fundamentally important in defining ecosystem properties, they are largely overlooked by macroecological theory. Anthropogenic disruptions and their effects are generally not comparable to one another, nor to disturbances that are part of natural disturbance regimes.
Erica A. Newman +7 more
wiley +1 more source
Isospin analysis of charmless B-meson decays [PDF]
, 2017 We discuss the determination of the CKM angle $$\alpha $$α using the non-leptonic two-body decays $$B\rightarrow \pi \pi $$B→ππ, $$B\rightarrow \rho \rho $$B→ρρ and $$B\rightarrow \rho \pi $$B→ρπ using the latest data available. We illustrate the methods
J. Charles +3 more
semanticscholar +1 more source