Results 31 to 40 of about 71,159 (257)

Rare top-quark decays $$t \rightarrow cg(g)$$ t → c g ( g ) in the aligned two-Higgs-doublet model

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
We update the Standard Model (SM) predictions for the branching ratios of the rare top-quark decays $$t \rightarrow cg(g)$$ t → c g ( g ) , and evaluate the maximum rates that can be reached in the aligned as well as in the four conventional two-Higgs ...
Fang-Min Cai   +3 more
doaj   +1 more source

The Tau Lepton [PDF]

open access: yesAnnual Review of Nuclear and Particle Science, 1980
The author reviews the experimental knowledge of the properties of the tau lepton and the tau neutrino. The conventional theory of lepton properties and interactions is summarized; and that theory is compared with experiment. Future directions for research in tau and tau neutrino physics are described.
openaire   +1 more source

Measurements of top quark pair relative differential cross-sections with ATLAS in pp collisions at s√=7 TeV [PDF]

open access: yes, 2013
Measurements are presented of differential cross-sections for top quark pair production in pp collisions at s√=7 TeV relative to the total inclusive top quark pair production cross-section. A data sample of 2.05 fb−1 recorded by the ATLAS detector at the
Farrington, Sinead   +2 more
core   +9 more sources

Freeze-in Dirac neutrinogenesis: thermal leptonic CP asymmetry

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
We present a freeze-in realization of the Dirac neutrinogenesis in which the decaying particle that generates the lepton-number asymmetry is in thermal equilibrium.
Shao-Ping Li   +3 more
doaj   +1 more source

Insights into grand unified theories from current experimental data [PDF]

open access: yes, 2015
In this thesis, we investigate several ways how the structure of a high energy particle physics model constituting a grand unification theory (GUT) in supersymmetry (SUSY) can be inferred from multiple types of information obtained at low energy ...
Maurer, Vinzenz Karl Maria
core   +1 more source

Probing QCD critical fluctuations from intermittency analysis in relativistic heavy-ion collisions

open access: yesPhysics Letters B, 2020
It is shown that intermittency, a self-similar correlation with respect to the size of the phase space volume, is sensitive to critical density fluctuations of baryon numbers in a system belonging to the three-dimensional (3D) Ising universality class ...
Jin Wu   +3 more
doaj   +1 more source

The $$\varvec{\Lambda _b\rightarrow \Lambda (\rightarrow p\pi ^-)\mu ^+\mu ^-}$$ Λ b → Λ ( → p π - ) μ + μ - decay in the aligned two-Higgs-doublet model

open access: yesEuropean Physical Journal C: Particles and Fields, 2017
The rare baryonic decay $$\Lambda _b\rightarrow \Lambda (\rightarrow p\pi ^-)\mu ^+\mu ^-$$ Λ b → Λ ( → p π - ) μ + μ - provides valuable complementary information compared to the corresponding mesonic $$b\rightarrow s\mu ^+\mu ^-$$ b → s μ + μ ...
Quan-Yi Hu, Xin-Qiang Li, Ya-Dong Yang
doaj   +1 more source

Leptonic and semi-leptonic B decays [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 2001
We present results for the semi-leptonic and leptonic decays of B mesons. These non-perturbative matrix elements are important for constraining the CKM matrix. Results are presented for the pseudoscalar and vector decay constants, as well as flavour breaking ratios and heavy quark symmetry relations.
UKQCD Collaboration, Maynard, C. M.
openaire   +2 more sources

Predicting the flavour and SUSY flavour structure from grand unified theories [PDF]

open access: yes, 2016
Grand Unified Theories (GUTs) offer an attractive framework for flavour models, since they feature relations between quarks and leptons. Combining them with Supersymmetry (SUSY) and flavour symmetries, we derive predictions for the flavour and SUSY ...
Sluka, Constantin
core   +1 more source

A search for tt¯ resonances in lepton+jets events with highly boosted top quarks collected in pp collisions at s√=7 TeV with the ATLAS detector [PDF]

open access: yes, 2012
A search for resonant production of high-mass top-quark pairs is performed on 2.05 fb−1 of proton-proton collisions at s√=7 TeV collected in 2011 with the ATLAS experiment at the Large Hadron Collider.
Ferrando, James
core   +4 more sources

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