1,434 research outputs found
CP violation in neutrino mixing with in Type-II seesaw model
We study a class of models for neutrino mass matrix in Type-II seesaw with
family symmetry. The resulting neutrino mass matrix can be naturally made
to respect a exchange plus CP conjugate symmetry (GLS) with the CP
violating phase and the mixing angle predicted to be
and , respectively. When GLS is explicitly broken by complex
Yukawa couplings, the model predictions for and can be
significantly modified. Should future experiments will indeed determine
and away from the GLS limit values, one then had to
consider models with broken GLS. We study several simple scenarios to show how
the modifications arise when GLS is broken and how future experiments can test
this class of models.Comment: 15 pages, 3 figures, minor errors corrected. Version appeared in
Phys.Lett.B. arXiv admin note: text overlap with arXiv:1504.0156
Predictive Violating Relations for Charmless Two-body Decays of Beauty Baryons and With Flavor Symmetry
Several baryons containing a heavy b-quark have been discovered. The decays
of these states provide new platform for testing the standard model (SM). We
study violation in SM for charmless two-body decays of the flavor
anti-triplet beauty baryon (b-baryon) in a model independent way. We found, in the
flavor symmetry limit, a set of new predictive relations among the
branching ratio and asymmetry for decays, such as
,
,and . Future data from LHCb can test these relations and
also other relations found.Comment: 13 pages, no figure, 6 tables, several missing terms in eq.11 are
adde
Some Predictions of Diquark Model for Hidden Charm Pentaquark Discovered at the LHCb
The LHCb has discovered two new states with preferred quantum numbers
and from decays. These new states can be
interpreted as hidden charm pentaquarks. It has been argued that the main
features of these pentaquarks can be described by diquark model. The diquark
model predicts that the and are in two separate octet
multiplets of flavor and there is also an additional decuplet
pentaquark multiplet. Finding the states in these multiplets can provide
crucial evidence for this model. The weak decays of b-baryon to a light meson
and a pentaquark can have Cabibbo allowed and suppressed decay channels. We
find that in the limit, for -spin related decay modes the ratio of
the decay rates of Cabibbo suppressed to Cabibbo allowed decay channels is
given by . There are also other testable relations for
b-baryon weak decays into a pentaquark and a light pseudoscalar. These
relations can be used as tests for the diquark model for pentaquark.Comment: revtex, 19 pages, 3 figures. one reference added and some typos
correcte
U-spin analysis of CP violation in decays into three charged light pseudoscalar mesons
We carry out a -spin symmetry analysis for CP violation in decays
into three light , , and mesons. We clarify some subtle points in constructing decay
amplitudes with formed by the two negatively charged light mesons in the
final states. -spin conserving momentum independent and momentum dependent
decay amplitudes, and -spin violating decay amplitudes due to quark mass
difference are constructed.Comment: RevTex 12 pages wit no figur
Emergence of multicluster chimera states
We thank Prof. L. Huang for helpful discussions. This work was partially supported by ARO under Grant No. W911NF-14-1-0504 and by NSF of China under Grant No. 11275003. The visit of NY to Arizona State University was partially sponsored by Prof. Z. Zheng and the State Scholarship Fund of China.Peer reviewedPublisher PD
The angle as the CP violating phase in the CKM matrix
The CKM matrix describing quark mixing with three generations can be
parameterized by three Euler mixing angles and one CP violating phase. In most
of the parameterizations, the CP violating phase chosen is not a directly
measurable quantity and is parametrization dependent. In this work, we propose
to use the most accurately measured CP violating angle in the unitarity
triangleas the phase in the CKM matrix, and construct an explicit
parameterization. We also derive an approximate Wolfenstein-like expression for
this parameterization.Comment: RevTex 7 pages with one figure. Version to be published in Phys.
Lett. B. arXiv admin note: substantial text overlap with arXiv:1204.123
The , and parameterizations of CP violating CKM phase
The CKM matrix describing quark mixing with three generations can be
parameterized by three mixing angles and one CP violating phase. In most of the
parameterizations, the CP violating phase chosen is not a directly measurable
quantity and is parametrization dependent. In this work, we propose to use
experimentally measurable CP violating quantities, , or
in the unitarity triangle as the phase in the CKM matrix, and
construct explicit , and parameterizations.
Approximate Wolfenstein-like expressions are also suggested.Comment: 14 page, 1 figur
Mesoscopic Interactions and Species Coexistence in Evolutionary Game Dynamics of Cyclic Competitions
Date of Acceptance: 27/11/2014Peer reviewedPublisher PD
- …