Results 31 to 40 of about 92,728 (292)

Regge trajectories for the mesons consisting of different quarks

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
By applying the Bohr–Sommerfeld quantization approach to the quadratic form of the spinless Salpeter-type equation (QSSE), we show that the obtained Regge trajectories for the mesons consisting of unequally massive quarks take the form $$M^2=\beta \left(
Jiao-Kai Chen
doaj   +1 more source

Prospects for studies of $${D^{*0}} \rightarrow {\mu ^+}{\mu ^-}$$ D ∗ 0 → μ + μ - and $${B^{{*0}}_{(s)}}\rightarrow {\mu ^+}{\mu ^-}$$ B ( s ) ∗ 0 → μ + μ - decays

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
Weak decays of the vector $${{D} ^*} ^0$$ D ∗ 0 and $${{B} ^{*0}_{({s})}} $$ B ( s ) ∗ 0 mesons to the $${\mu ^+\mu ^-} $$ μ + μ - final state provide novel potential to test the Standard Model of particle physics.
F. Abudinén   +3 more
doaj   +1 more source

Baryogenesis and Dark Matter from $B$ Mesons

open access: yes, 2019
We present a new mechanism of Baryogenesis and dark matter production in which both the dark matter relic abundance and the baryon asymmetry arise from neutral $B$ meson oscillations and subsequent decays. This set-up is testable at hadron colliders and $
Elor, Gilly   +2 more
core   +1 more source

Associated production of J/ψ and ϒ mesons and the prospects to observe a new hypothetical tetraquark state

open access: yesEPJ Web of Conferences, 2017
We propose a new mechanism for prompt simultaneous production of J/ψ and ϒ mesons in high energy hadronic collisions. The process is considered as a perturbative production of B c ( * ) mesons g + g → B c ( * ) + B ̅ c ( * )
Baranov Sergey
doaj   +1 more source

B lifetime measurements with exclusively reconstructed B decays

open access: yes, 2000
Data collected with the BABAR detector at the PEP-II asymmetric B Factory at SLAC are used to study the lifetime of the B0 and B+ mesons. The data sample consists of 7.4 fb-1 collected near the Y(4S) resonance. B0 and B+ mesons are fully reconstructed in
CHIH-HSIANG CHENG, Particle Data Group
core   +1 more source

Semileptonic B decays to excited charmed mesons [PDF]

open access: yes, 1997
Exclusive semileptonic B decays into excited charmed mesons are investigated at order $\Lambda_{QCD}/m_Q$ in the heavy quark effective theory. Differential decay rates for each helicity state of the four lightest excited $D$ mesons ($D_1$, $D_2^*$, $D_0^*
A. B. Kaidalov   +52 more
core   +2 more sources

Bottom quark energy loss and hadronization with B+ and B s 0 $$ {\textrm{B}}_{\textrm{s}}^0 $$ nuclear modification factors using pp and PbPb collisions at s NN $$ \sqrt{s_{\textrm{NN}}} $$ = 5.02 TeV

open access: yesJournal of High Energy Physics
The production cross sections of B s 0 $$ {\textrm{B}}_{\textrm{s}}^0 $$ and B+ mesons are reported in proton-proton (pp) collisions recorded by the CMS experiment at the CERN LHC with a center-of-mass energy of 5.02 TeV.
The CMS collaboration   +2385 more
doaj   +1 more source

Inclusive B-Meson Production in e^+ e^- and p p-bar Collisions

open access: yes, 1998
We provide nonperturbative fragmentation functions for B mesons, both at leading and next-to-leading order in the MS-bar factorization scheme with five massless quark flavors.
B. A. Kniehl   +53 more
core   +2 more sources

Penguin decays of B mesons [PDF]

open access: yes, 1998
Penguin, or loop, decays of B mesons induce effective flavor-changing neutral currents, which are forbidden at tree level in the Standard Model. These decays give special insight into the CKM matrix and are sensitive to non-standard model effects.
Abreu P   +12 more
core   +2 more sources

A Hybrid Semi‐Inverse Variational and Machine Learning Approach for the Schrödinger Equation

open access: yesAdvanced Physics Research, EarlyView.
A hybrid semi‐inverse variational and machine‐learning framework is presented for solving the Schrödinger equation with complex quantum potentials. Physics‐based variational solutions generate high‐quality training data, enabling Random Forest and Neural Network models to deliver near‐perfect energy predictions.
Khalid Reggab   +5 more
wiley   +1 more source

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