Results 81 to 90 of about 140,064 (237)

CP violation in loop-induced diboson production

Journal of High Energy Physics
We consider the impact of CP-violating Higgs and top interactions on diboson production from gluon fusion within the Standard Model Effective Field Theory framework.
Marion O. A. Thomas, Eleni Vryonidou
doaj   +1 more source

CP violation induced by the double resonance for pure annihilation decay process in perturbative QCD

European Physical Journal C: Particles and Fields, 2017
In a perturbative QCD approach we study the direct CP violation in the pure annihilation decay process of $$\bar{B}^0_{s}\rightarrow \pi ^+\pi ^-\pi ^+\pi ^-$$ B ¯ s 0 → π + π - π + π - induced by the $$\rho $$ ρ and $$\omega $$ ω double resonance effect.
Gang Lü, Ye Lu, Sheng-Tao Li, Yu-Ting Wang   +3 more
doaj   +1 more source

New Ways to Soft Leptogenesis

, 2004
Soft supersymmetry breaking terms involving heavy singlet sneutrinos provide new sources of lepton number violation and of CP violation. In addition to the CP violation in mixing, investigated previously, we find that `soft leptogenesis' can be generated
A.D. Sakharov, E.J. Chun, Esteban Roulet, M. Gell-Mann, S.P. Martin, T. Hambye, T. Yanagida, Tamar Kashti, Yosef Nir, Yuval Grossman   +9 more
core   +1 more source

Network Structure and the Efficiency Gains from Mergers: Evidence from U.S. Freight Railroads

The RAND Journal of Economics, EarlyView.
ABSTRACT The trade‐off between market power and efficiency gains is central to antitrust analyses of mergers, but empirical evidence quantifying efficiencies remains limited. Using transaction‐level data from U.S. freight railroads (1985–2005), this article quantifies merger‐induced cost efficiencies, driven mainly by eliminating inter‐railroad ...
Yanyou Chen
wiley   +1 more source

CP Violation for B0→ρ0(ω)ρ0(ω)→π+π-π+π- in QCD Factorization

Advances in High Energy Physics, 2014
In the QCD factorization (QCDF) approach we study the direct CP violation in B-0→ρ0(ω)ρ0(ω)→π+π-π+π- via the ρ-ω mixing mechanism. We find that the CP violation can be enhanced by double ρ-ω mixing when the masses of the π+π- pairs are in the vicinity of
Gang Lü, Jia-Qi Lei, Xin-Heng Guo
doaj   +1 more source

Spontaneous CP violation in multi-Higgs potentials with triplets of Δ(3n 2) and Δ(6n 2)

Journal of High Energy Physics, 2017
Motivated by discrete flavour symmetry models, we analyse Spontaneous CP Violation (SCPV) for potentials involving three or six Higgs fields (both electroweak doublets and singlets) which fall into irreducible triplet representations of discrete ...
Ivo de Medeiros Varzielas, Stephen F. King, Christoph Luhn, Thomas Neder   +3 more
doaj   +1 more source

CP violation and gravity as the weakest force [PDF]

, 2008
We argue that CP violation has rather dramatic impact on the "gravity as the weakest force" conjecture. Namely we find that new ultraviolet scale must be $\Lambda \lesssim \theta g^3 M_P$, where $\theta$ is an effective parameter describing CP violation ...
Kobakhidze, Archil
core  

The correlation between sanction adjustments and drunk‐driving violations and related outcomes in Taiwan: A nationwide interrupted time series analysis

Addiction, EarlyView.
Abstract Background and aims Drunk‐driving accounts for a significant portion of traffic crashes in Taiwan. From 2008 to 2013, both the Taiwan Legislative Yuan and the federal administrative agencies collaborated to increase drunk‐driving penalties.
Ling‐Wei Kuo, Chien‐An Liao, Chi‐Tung Cheng, Chien‐Hung Liao, Chih‐Po Hsu, Chih‐Yuan Fu, Shih‐Ching Kang, Brett Olin, Chun‐Shiang Yang, Jen‐Fu Huang   +9 more
wiley   +1 more source

Anchors or relational risks? Educator and psychologist narratives of attachment in child–robot relationships

British Journal of Educational Psychology, EarlyView.
Abstract Background As AI‐enabled social robots become more common in schools, children may form strong emotional bonds with them despite robots not being caregivers and lacking the capacities for “true” attachment. Given limited understanding of potential risks and safeguards, professional perspectives are needed to inform responsible design and ...
Dimitris Pnevmatikos, Panagiota Christodoulou   +1 more
wiley   +1 more source

Cp violation analysis of $$D^0\rightarrow M^0 K \rightarrow M^0(\pi ^\pm \ell ^\mp \nu )$$ D 0 → M 0 K → M 0 ( π ± ℓ ∓ ν )

European Physical Journal C: Particles and Fields
CP violation in the charm sector is highly sensitive to new physics due to its small predicted value within the standard model. By this work, we investigated the CP violation in the cascade decay process $$D^0(t_1) \rightarrow \pi ^0 K(t_2) \rightarrow ...
Wen-Jie Song, Shi-Qi Wang, Qin Qin, Ya Li   +3 more
doaj   +1 more source