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Jian-Feng Cheng, Yuan-Ning Gao, Chao-Shang Huang +1
We investigate the pure penguin process using QCD factorization approach to calculate hadronic matrix elements to the order in some well-known NP models. It is…
Penguin pollution in the B^0 -> J/psi K_S decay
Hsiang-nan Li, Satoshi Mishima
We present the most complete analysis of the penguin correction to the extraction of the standard-model parameter sin(2ϕ_1) from the B^0 -> J/psi K_S decay up to leading power in 1…
A Very Narrow Shadow Extra Z-boson at Colliders
We-Fu Chang, John N. Ng, Jackson M. S. Wu
We consider the phenomenological consequences of a hidden Higgs sector extending the Standard Model (SM), in which the ``shadow Higgs'' are uncharged under the SM gauge groups. We…
Regge-cascade hadronization
K. Odagiri
We argue that the evolution of coloured partons into colour-singlet hadrons has approximate factorization into an extended parton-shower phase and a colour-singlet resonance--pole…
Flavor Changing Effects in Family Nonuniversal Z' Models
Cheng-Wei Chiang, N. G. Deshpande, J. Jiang
Flavor-changing and CP-violating interactions of Z' to fermions are generally present in models with extra U(1) gauge symmetry that are string-inspired or related to broken gauged…