Parity-Violating Photoproduction of p6 on the D Resonance
نویسندگان
چکیده
Shi-Lin Zhu,1,2 C. M. Maekawa,1 B. R. Holstein,3 and M. J. Ramsey-Musolf 1,2,4 1Kellogg Radiation Laboratory 106-38, California Institute of Technology, Pasadena, California 91125 2Department of Physics, University of Connecticut, Storrs, Connecticut 06269 3Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003 4Theory Group, Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606 (Received 20 June 2001; published 29 October 2001)
منابع مشابه
Relaxing Atomic Parity Violation Constraints on New Physics
The weak charge QW measured in atomic parity violation experiments can receive compensating contributions from more than one new physics source. We show explicitly that the ∆QW contribution from the exchange of an extra Z-boson can cancel that from the s-channel scalar top or scalar charm exchange in R-parity violating SUSY models proposed to explain the HERA high-Q2 anomaly. Parity violation i...
متن کاملMeasurements of parity-violating asymmetries in electron-deuteron scattering in the nucleon resonance region.
We report on parity-violating asymmetries in the nucleon resonance region measured using inclusive inelastic scattering of 5-6 GeV longitudinally polarized electrons off an unpolarized deuterium target. These results are the first parity-violating asymmetry data in the resonance region beyond the Δ(1232). They provide a verification of quark-hadron duality-the equivalence of the quark- and hadr...
متن کاملBs Mesons in the MSSM with R-parity Violation
Motivated by the possible large direct CP asymmetry of B̄0 d → D + D − decay measured by Belle collaboration, we investigate double charm Bu,d and Bs decays in the minimal supersymmetric standard model with R-parity violation. We derive the bounds on relevant R-parity violating couplings from the current experimental data, which show quite consistent measurements among relative collaborations. U...
متن کاملVector Meson Photoproduction in the Quark Model
We present a quark model study of the ω meson photoproduction near threshold. With a limited number of parameters, all the data in history are reproduced. The roles played by the sand u-channel processes (resonance excitations and nucleon pole terms), as well as the t-channel natural (Pomeron) and unnatural parity (pion) exchanges are clarified. This approach provides a framework for systematic...
متن کاملar X iv : h ep - p h / 97 06 51 9 v 1 2 6 Ju n 19 97 CERN - TH / 97 - 135 R - parity violation and the New Events at HERA
We summarise possible explanations of the HERA large-Q 2 data, in the framework of R-parity violating supersymmetry. Experimental limits indicate that the most likely production channels are e + d → ˜ c L , e + d → ˜ t and e + s → ˜ t. We study the regions of the parameter space that lead to consistent branching ratios, with and without the unification condition for gaugino masses. Cancellation...
متن کامل