Results 21 to 30 of about 988,906 (312)

Tau and charm decays

open access: yesComptes Rendus. Physique, 2020
A summary of recent precise results in tau and charm physics is presented. Topics include leptonic and hadronic tau decays, lepton flavour and lepton number violation, charm mixing and $\mathit{CP}$ violation, leptonic and semileptonic charm decays, rare
Gersabeck, Evelina, Pich, Antonio
doaj   +1 more source

New Physics Beryond the SM at BESIII [PDF]

open access: yesEPJ Web of Conferences, 2019
Numerous astrophysical observations strongly suggest the existence of Dark Matter, which provides a hint of dark sector physics. There could exist many dark candidates predicted by theories BSM, such as dark photons and invisible things, that communicate
Zhao Minggang
doaj   +1 more source

Null test searches for BSM physics with rare charm decays [PDF]

open access: yesProceedings of 10th International Workshop on Charm Physics — PoS(CHARM2020), 2021
Semileptonic Flavor Changing Neutral Current decays of charmed hadrons uniquely probe the up-sector of the Standard Model. Clean null test observables, such as CP-asymmetries, lepton-universality ratios, missing energy modes, lepton flavor violating modes
Marcel Golz
semanticscholar   +1 more source

Physics programme of ALICE 3: A next-generation heavy-ion detector for LHC Run 5 and beyond [PDF]

open access: yesEPJ Web of Conferences
The ALICE Collaboration is designing a completely new apparatus, ALICE 3, for the LHC Runs 5 and 6. The detector comprises a large pixel-based tracking system covering eight units of pseudorapidity, complemented by various particle identification systems
Nicassio Nicola
doaj   +1 more source

Charm physics with overlap fermions on 2+1-flavor domain wall fermion configurations [PDF]

open access: yesChinese Physics C, High Energy Physics & Nuclear Physics
Decay constants of pseudoscalar mesons D, , and vector mesons , , are determined from the lattice QCD at a lattice spacing fm. For vector mesons, the decay constants defined by tensor currents are given in the scheme at GeV.
Donghao Li   +5 more
semanticscholar   +1 more source

First results for charm physics with a tmQCD valence action [PDF]

open access: yesProceedings of The 36th Annual International Symposium on Lattice Field Theory — PoS(LATTICE2018), 2018
We present preliminary results in the charm sector from a mixed-action setup, in which CLS $N_f=2+1$ ensembles are combined with a Wilson twisted mass valence action.
A. Bussone   +5 more
semanticscholar   +1 more source

Measurements with doubly-charmed hadrons in LHCb [PDF]

open access: yesEPJ Web of Conferences, 2019
The LHCb experiment has been collecting large amounts of charm data, making it possible to perform precise measurements and search for rare particles. In 2017, the LHCb collaboration reported the first observation of the doubly charmed baryon, the Ξcc++$
Vieira Daniel
doaj   +1 more source

Measurement of the cross section of e + e − → ηπ + π − at center-of-mass energies from 3.872 GeV to 4.700 GeV

open access: yesJournal of High Energy Physics, 2022
Using data samples with an integrated luminosity of 19 fb −1 at twenty-eight center-of-mass energies from 3.872 GeV to 4.700 GeV collected with the BESIII detector at the BEPCII electron-positron collider, the process e + e − → ηπ + π − and the ...
The BESIII collaboration   +574 more
doaj   +1 more source

Charm mixing in the Standard Model and beyond [PDF]

open access: yes, 2006
The motivation most often cited in searches for D0-anti-D0 mixing and CP-violation in charm system lies with the possibility of observing a signal from New Physics which dominates that from the Standard Model. We review recent theoretical predictions and
ALEXEY A. PETROV, Yao W. M.
core   +3 more sources

Charm Physics at BESIII

open access: yesJournal of Physics: Conference Series, 2020
Recently, BESIII has performed many analyses with the largest e+ e- annihilation data set taken on the mass-thresholds. Those works focus on the measurements of the CKM matrix elements |Vcd(s)|, the transition form factors fD(s) , tests of lepton flavor ...
Xin-Xin Ma
semanticscholar   +1 more source

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