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Showing 1998 · hep-phShow all

21 papers · 2 filters

hep-ph1998★ 7 cited

General analysis of B decays to two pseudoscalars for EWP, rescattering and color suppression effects

David Atwood, Amarjit Soni

A general analysis for B decays to two pseudoscalars, involving ten modes, is presented. A simple model for final state interactions and rescattering effects is proposed. We show h…

hep-ph1998★ 35 cited

Global Three-Neutrino Vacuum Oscillation fits to the Solar and Atmospheric Anomalies

V. Barger, K. Whisnant

We determine the three-neutrino mixing and mass parameters that are allowed by the solar and atmospheric neutrino data when vacuum oscillations are responsible for both phenomena.…

hep-ph1998★ 17 cited

CP Violation in Non-Leptonic Omega^- Decays

Jusak Tandean, G. Valencia

We estimate the size of the CP-violating rate asymmetry for the decay Omega^- -> Cascade + pion. Within the standard model we find a value of 2 x 10^(-5), and it could be as much a…

hep-ph1998★ 2 cited

The Leading Power Corrections to the Structure Functions

Xiaofeng Guo, Jianwei Qiu

We show that when Bjorken is large, the leading order twist-four contributions to the structure functions can be expressed in terms of the derivatives of the normal twist-two…

hep-ph1998★ 6 cited

Possible Nonstandard Effects in Z+Gamma Events at LEP2

K. J. Abraham, Bodo Lampe

We point out that the so--called 'radiative return' events at LEP2 are suited to the study of nonstandard physics, particularly if the vector bosons are emitted into the central de…

hep-ph1998★ 6 cited

|Delta I|=3/2 Decays of the Omega^- in Chiral Perturbation Theory

Jusak Tandean, G. Valencia

We study the decays Omega^- -> Cascade+pion using heavy-baryon chiral perturbation theory to quantify the |Delta I|=1/2 rule in these decay modes. The ratio of |Delta I|=3/2 to |De…

hep-ph1998★ 45 cited

J/ψSuppression in Nucleus-Nucleus Collisions

Jianwei Qiu, James P. Vary, Xiaofei Zhang

We propose a model for the production and suppression of J/ψmesons in high-energy hadronic collisions. We factorized the process into a production of the pairs of relati…

hep-ph1998★ 16 cited

Probing Quark-Gluon Correlation Functions

Xiaofeng Guo, Jianwei Qiu

We review applicability of QCD factorization theorem to multiple scattering in deeply inelastic lepton-nucleus scattering. We show why A^{1/3}-type nuclear enhancement can be calcu…

hep-ph1998★ 38 cited

Inferred 4.4 eV Upper Limits on the Muon- and Tau-Neutrino Masses

V. Barger, T. J. Weiler, K. Whisnant

By combining experimental constraints from atmospheric and solar neutrino oscillations and the tritium beta decay endpoint, we infer upper limits of 4.4 eV on the and m…

hep-ph1998

Probing Multiparton Correlations at CEBAF

Jianwei Qiu

In this talk, I explore the possibilities of probing the multiparton correlation functions at CEBAF at its current energy and the energies with its future upgrades.

hep-ph1998★ 12 cited

Chiral Perturbation Theory for |Delta I|=3/2 Hyperon Decays

A. Abd El-Hady, Jusak Tandean, G. Valencia

We study the |Delta I|=3/2 amplitudes of hyperon non-leptonic decays of the form B->B'+pi in the context of chiral perturbation theory. The lowest-order predictions are determined…

hep-ph1998★ 67 cited

Probing anomalous top quark interactions at the Fermilab Tevatron Collider

Ken-ichi Hikasa, K. Whisnant, Jin Min Yang +1

We study the effects of dimension-six operators contributing to the vertex in top quark pair production at the Tevatron collider. We derive both the limits from Run 1 da…

hep-ph1998★ 34 cited

Generalized Neutrino Mixing from the Atmospheric Anomaly

V. Barger, T. J. Weiler, K. Whisnant

We determine the neutrino mixing and mass parameters that are allowed by the Super-Kamiokande atmospheric neutrino data in a three-neutrino model with one mass-squared difference c…

hep-ph1998★ 44 cited

mesons in a Bethe-Salpeter model

A. Abd El-Hady, M. A. K. Lodhi, J. P. Vary

We apply our Bethe-Salpeter model for mesons to the family with parameters fixed in our previous investigation. We evaluate the mass of the pseudo-scalar meson as 6.356…

hep-ph1998★ 89 cited

Single Top Quark Production via FCNC Couplings at Hadron Colliders

T. Han, M. Hosch, K. Whisnant +2

We calculate single top-quark production at hadron colliders via the chromo-magnetic flavor-changing neutral current couplings and . We find that the strength…

hep-ph1998★ 420 cited

Bi-Maximal Mixing of Three Neutrinos

V. Barger, S. Pakvasa, T. J. Weiler +1

We show that if the solar and atmospheric data are both described by maximal vacuum oscillations at the relevant mass scales then there exists a unique mixing matrix for three neut…

hep-ph1998★ 102 cited

Variations on Four-Neutrino Oscillations

V. Barger, S. Pakvasa, T. J. Weiler +1

We make a model-independent analysis of all available data that indicate neutrino oscillations. Using probability diagrams, we confirm that a mass spectrum with two nearly degenera…

hep-ph1998★ 12 cited

Extracting information on CKM phases, electro-weak penguins and new physics from B --> VV decays

David Atwood, Amarjit Soni

We derive constraints for modes ($V= vector meson) that allow aquantitative assessment of the contributions from electroweak penguins (EWP) and/or new physics. Interplay…

hep-ph1998★ 13 cited

Two body decays of the -quark: Applications to direct CP violation, searches for electro-weak penguins and new physics

David Atwood, Amarjit Soni

A systematic experimental search for two-body hadronic decays of the b-quark of the type b to quark + meson is proposed. These reactions have a well defined experimental signature…

hep-ph1998★ 16 cited

Probing anomalous top quark couplings at eγcolliders

Jun-Jie Cao, Jian-Xiong Wang, Jin Min Yang +2

We study in the effective Lagrangian approach the possibility of probing anomalous top quark charged current couplings in the single top production at a high energy eγcollider. We…

hep-ph1998★ 9 cited

Effective CP-violating operators of the tau lepton and some of their phenomenologies

Tao Huang, Jin Min Yang, Bing-Lin Young +1

The dimension-six CP-violating SU_L(2)\times U_Y(1) invariant operators involving the tau lepton are studied. The constraints from the available experimental data on tau dipole mom…