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7 papers found.
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On the textures of neutrino mass matrix for maximal atmospheric mixing angle and Dirac CP phase

Abstract In this paper, we derive in a novel approach the possible textures of neutrino mass matrix that can lead us to maximal atmospheric mixing angle and Dirac CP phase which are consistent with the current neutrino oscillation data. A total of eleven textures are thus found. Interestingly, the specific texture given by the μ-τ reflection symmetry can be reproduced from one of...

Determinations of the form factors of semileptonic \(D\rightarrow K\) decays and leptoquark constraints

By analyzing all existing measurements for \( D\rightarrow K \ell ^+ \nu _{\ell } \) (\(\ell =e,\ \mu \)) decays, we find that the determinations of both the vector form factor \(f_+^K(q^2)\) and scalar form factor \(f_0^K(q^2)\) for semileptonic \(D\rightarrow K\) decays from these measurements are feasible. By taking the parameterization of the one order series expansion of the...

New gauge boson \(W^\prime \) and radiative leptonic decays of charged B and D mesons

Considering the constraints on model parameters from the latest experimental data, we study the contributions of new gauge boson \(W^\prime \) predicted by the general 221 models to the radiative leptonic decays of charged B and D mesons. It is found that the largest contributions of \(W^\prime \) in the non-universal 221 model to the branching fractions occur in the decay modes...

Neutrino μ-τ reflection symmetry and its breaking in the minimal seesaw

In this paper, we attempt to implement the neutrino μ-τ reflection symmetry (which predicts θ 23 = π/4 and δ = ±π/2 as well as trivial Majorana phases) in the minimal seesaw (which enables us to fix the neutrino masses). For some direct (the preliminary experimental hints towards θ 23 ≠ π/4 and δ ≠ −π/2) and indirect (inclusion of the renormalization group equation effect and...

Search for anomalous couplings via single top quark production in association with a photon at LHC

Considering the experimental constraints given by the CMS collaboration at \(\sqrt{s} = 8\) TeV on the strength of top quark flavour-changing neutral-current couplings \(tq\gamma \) and tqg, we investigate the production of top quark in association with a photon and carry out a full simulation for the signals \(\ell \nu b\gamma \) and \(jjb\gamma \) at 14 TeV LHC. In our...

Precise photoproduction of the charged top-pions at the LHC with forward detector acceptances

We study the photoproduction of the charged top-pion predicted by the top triangle moose (TTM) model (a deconstructed version of the topcolor-assisted technicolor TC2 model) via the processes \(pp\rightarrow p \gamma p \rightarrow \pi ^\pm _t t +X\) at the 14 TeV Large Hadron Collider (LHC) including next-to-leading order (NLO) QCD corrections. Our results show that the...

Light axigluon and single top production at the LHC

Chong-Xing Yue 0 Shi-Yue Cao 0 Qing-Guo Zeng 0 0 Department of Physics, Liaoning Normal University , Dalian 116029, P.R. China The light axigluon model can explain the Tevatron tt forward-backward