Results 1 to 10 of about 691,412 (265)

Observation of Several Sources of CP Violation in B^{+}→π^{+}π^{+}π^{-} Decays.

open access: yesPhysical Review Letters, 2020
Observations are reported of different sources of CP violation from an amplitude analysis of B^{+}→π^{+}π^{+}π^{-} decays, based on a data sample corresponding to an integrated luminosity of 3  fb^{-1} of pp collisions recorded with the LHCb detector.
L. C. R. Aaij   +499 more
semanticscholar   +1 more source

Coloured gravitational instantons, the strong CP problem and the companion axion solution

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
Quantum gravity introduces a new source of the combined parity (CP) violation in gauge theories. We argue that this new CP violation gets bundled with the strong CP violation through the coloured gravitational instantons. Consequently, the standard axion
Zhe Chen, Archil Kobakhidze
doaj   +1 more source

Revisiting CP violation in D→PP and VP decays [PDF]

open access: yesPhysical Review D, 2019
Direct CP violation in the hadronic charm decays provides a good testing ground for the Kobayashi-Maskawa mechanism in the Standard Model. Any significant deviations from the expectation would be indirect evidence of physics beyond the Standard Model. In
Hai-Yang Cheng, C. Chiang
semanticscholar   +1 more source

Spontaneous CP violation and symplectic modular symmetry in Calabi-Yau compactifications

open access: yesNuclear Physics B, 2021
We explore the geometrical origin of CP and the spontaneous CP violation in Calabi-Yau compactifications. We find that the CP symmetry is identified with an outer automorphism of the symplectic modular group in the large complex structure regime of ...
Keiya Ishiguro   +2 more
doaj   +1 more source

On the determination of leptonic CP violation and neutrino mass ordering in presence of non-standard interactions: present status [PDF]

open access: yesJournal of High Energy Physics, 2019
A bstractWe perform a global analysis of neutrino data in the framework of three massive neutrinos with non-standard neutrino interactions which affect their evolution in the matter background.
I. Esteban   +2 more
semanticscholar   +1 more source

CP violation in modular invariant flavor models [PDF]

open access: yesPhysical Review D, 2019
We study the spontaneous CP violation through the stabilization of the modulus τ in modular invariant flavor models. The CP-invariant potential has the minimum only at Re[τ]=0 or 1/2(mod 1).
Tatsuo C. Kobayashi   +5 more
semanticscholar   +1 more source

Update on the improved lattice calculation of direct CP-violation in K decays [PDF]

open access: yesProceedings of 37th International Symposium on Lattice Field Theory — PoS(LATTICE2019), 2019
We provide an update on the RBC & UKQCD lattice calculation of the measure of Standard Model direct CP-violation in kaon decays, $\epsilon'$
C. Kelly, Tianle Wang
semanticscholar   +1 more source

Search for CP Violation in Neutrino and Antineutrino Oscillations by the T2K Experiment with 2.2×10^{21} Protons on Target. [PDF]

open access: yesPhysical Review Letters, 2018
The T2K experiment measures muon neutrino disappearance and electron neutrino appearance in accelerator-produced neutrino and antineutrino beams. With an exposure of 14.7(7.6)×10^{20} protons on target in the neutrino (antineutrino) mode, 89 ν_{e ...
K. Abe   +321 more
semanticscholar   +1 more source

CP Violation in Higgs-Gauge Interactions: From Tabletop Experiments to the LHC. [PDF]

open access: yesPhysical Review Letters, 2019
We investigate the interplay between the high- and low-energy phenomenology of CP-violating interactions of the Higgs boson with gauge bosons. For this purpose, we use an effective field theory approach and consider all dimension-six operators arising in
V. Cirigliano   +5 more
semanticscholar   +1 more source

Exploring dynamical CP violation induced baryogenesis by gravitational waves and colliders [PDF]

open access: yesPhysical Review D, 2018
By assuming a dynamical source of CP violation, the tension between sufficient CP violation for successful electroweak baryogenesis and strong constraints from current electric dipole moment measurements could be alleviated.
F. Huang, Zhuoni Qian, Mengchao Zhang
semanticscholar   +1 more source

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