He Xiaogang

Interactions of unparticles with standard model particles

We study interactions of unparticles U of dimension d{sub U} due to Georgi with standard model (SM) fields through effective operators. The unparticles describe the low energy physics of a nontrivial scale invariant sector. Since unparticles come from beyond the SM physics, it is plausible that they transform as a singlet under the SM gauge group. This helps tremendously in limiting possible interactions. We analyze interactions of scalar U, vector U{sup {mu}}, and spinor U{sup s} unparticles with SM fields and derivatives up to dimension four. Using these operators, we discuss different features of producing unparticles at an e{sup +}e{sup -} collider and other phenomenologies. It is possible to distinguish different unparticles produced at an e{sup +}e{sup -} collider by looking at various distributions of production cross sections.

X(1812)in the quarkonia-glueball-hybrid mixing scheme

Recently a

Members in the 0+ 0(+ +) family

J^{PC}=0^{++}

Probing new physics in charm couplings with flavor-changing neutral currents

(X(1812)) state with a mass near the threshold of

Unparticle realization through continuous mass scale invariant theories

\omega

Bi-large neutrino mixing see-saw mass matrix with texture zeros and leptogenesis

and

Parity, charge conjugation, and SU(3) constraints on threshold enhancement in J/{psi} decays into {gamma}pp and Kp{lambda}

\phi

Decay {sigma}{sup +}{yields}pl{sup +}l{sup -} within the standard model

has been observed by the BES collaboration in

CP asymmetry in B{sup 0}{yields}K{sup -}{pi}{sup +} from supersymmetric flavor changing interactions

J/\psi \to \gamma \omega \phi

CP violation in hyperon decays from supersymmetry

decay. It has been suggested that it is a