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Title: New constraints on R-parity violating couplings through the measurements of the B{sub s(d)}{sup 0}-B{sub s(d)}{sup 0} and K{sup 0}-K{sup 0} mixing

Abstract

We calculate contributions to B{sub s}-B{sub s} mixing through tree-level sneutrino exchange in the framework of the minimal supersymmetric standard model with R-parity violation, including the next-to-leading-order QCD corrections. We compare our results with the updated bounds on the B{sub s}-B{sub s} mass difference reported by CDF collaborations and present new constraints on the relevant combinations of parameters of the minimal supersymmetric standard model with R-parity violation. Our results show that upper bound on the relevant combination of couplings of B{sub s}-B{sub s} mixing is of the order 10{sup -9}. We also calculate the B{sub d}{sup 0}-B{sub d}{sup 0} and K{sup 0}-K{sup 0} mass differences and show that the upper bounds on the relevant combinations of couplings are 2 and 4 orders of magnitude stronger than ones reported in the literatures, respectively. We also discuss the case of complex couplings and show that how the relevant combinations of couplings are constrained by the updated experiment data of B{sub s}-B{sub s}, B{sub d}-B{sub d} mixing and time-dependent CP asymmetry S{sub J/{psi}}{sub K{sub s}}, and future possible observations of S{sub J/{psi}}{sub {phi}} at the Large Hadron Collider beauty experiment (LHCb), respectively.

Authors:
; ;  [1]
  1. Department of Physics, Peking University, Beijing 100871 (China)
Publication Date:
OSTI Identifier:
21010982
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevD.75.034006; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ASYMMETRY; B S MESONS; CERN LHC; COMPARATIVE EVALUATIONS; CORRECTIONS; CP INVARIANCE; FERMILAB COLLIDER DETECTOR; KAONS NEUTRAL; MASS DIFFERENCE; QUANTUM CHROMODYNAMICS; STANDARD MODEL; SUPERSYMMETRY; SYMMETRY BREAKING; TIME DEPENDENCE

Citation Formats

Gao Xiangdong, Li Chongsheng, and Yang Lilin. New constraints on R-parity violating couplings through the measurements of the B{sub s(d)}{sup 0}-B{sub s(d)}{sup 0} and K{sup 0}-K{sup 0} mixing. United States: N. p., 2007. Web. doi:10.1103/PHYSREVD.75.034006.
Gao Xiangdong, Li Chongsheng, & Yang Lilin. New constraints on R-parity violating couplings through the measurements of the B{sub s(d)}{sup 0}-B{sub s(d)}{sup 0} and K{sup 0}-K{sup 0} mixing. United States. doi:10.1103/PHYSREVD.75.034006.
Gao Xiangdong, Li Chongsheng, and Yang Lilin. Thu . "New constraints on R-parity violating couplings through the measurements of the B{sub s(d)}{sup 0}-B{sub s(d)}{sup 0} and K{sup 0}-K{sup 0} mixing". United States. doi:10.1103/PHYSREVD.75.034006.
@article{osti_21010982,
title = {New constraints on R-parity violating couplings through the measurements of the B{sub s(d)}{sup 0}-B{sub s(d)}{sup 0} and K{sup 0}-K{sup 0} mixing},
author = {Gao Xiangdong and Li Chongsheng and Yang Lilin},
abstractNote = {We calculate contributions to B{sub s}-B{sub s} mixing through tree-level sneutrino exchange in the framework of the minimal supersymmetric standard model with R-parity violation, including the next-to-leading-order QCD corrections. We compare our results with the updated bounds on the B{sub s}-B{sub s} mass difference reported by CDF collaborations and present new constraints on the relevant combinations of parameters of the minimal supersymmetric standard model with R-parity violation. Our results show that upper bound on the relevant combination of couplings of B{sub s}-B{sub s} mixing is of the order 10{sup -9}. We also calculate the B{sub d}{sup 0}-B{sub d}{sup 0} and K{sup 0}-K{sup 0} mass differences and show that the upper bounds on the relevant combinations of couplings are 2 and 4 orders of magnitude stronger than ones reported in the literatures, respectively. We also discuss the case of complex couplings and show that how the relevant combinations of couplings are constrained by the updated experiment data of B{sub s}-B{sub s}, B{sub d}-B{sub d} mixing and time-dependent CP asymmetry S{sub J/{psi}}{sub K{sub s}}, and future possible observations of S{sub J/{psi}}{sub {phi}} at the Large Hadron Collider beauty experiment (LHCb), respectively.},
doi = {10.1103/PHYSREVD.75.034006},
journal = {Physical Review. D, Particles Fields},
number = 3,
volume = 75,
place = {United States},
year = {Thu Feb 01 00:00:00 EST 2007},
month = {Thu Feb 01 00:00:00 EST 2007}
}
  • We present constraints on the angle {gamma} of the unitarity triangle with a Dalitz analysis of neutral D decays to K{sub S}{pi}{sup +}{pi}{sup -} from the processes B{sup 0}{yields}D{sup 0}K*{sup 0} (B{sup 0}{yields}D{sup 0}K*{sup 0}) and B{sup 0}{yields}D{sup 0}K*{sup 0} (B{sup 0}{yields}D{sup 0}K*{sup 0}) with K*{sup 0}{yields}K{sup +}{pi}{sup -} (K*{sup 0}{yields}K{sup -}{pi}{sup +}). Using a sample of 371x10{sup 6} BB pairs collected with the BABAR detector at PEP-II, we constrain the angle {gamma} as a function of r{sub S}, the magnitude of the average ratio between b{yields}u and b{yields}c amplitudes.
  • We derive the upper bounds on certain products of R-parity- and lepton-flavor-violating couplings from the decays of the neutral B meson into two charged leptons. These modes of B{sup 0} decays can constrain the product combinations of the couplings with one or more heavy generation indices. We find that most of these bounds are stronger than the previous ones. {copyright} {ital 1997} {ital The American Physical Society}
  • Recent data on B meson mixings and decays are, in general, in accord with the standard model expectations, except showing a few hiccups: (i) a large phase in B{sub s} mixing, (ii) a significant difference (>3.5{sigma}) between CP-asymmetries in B{sup {+-}}{yields}{pi}{sup 0}K{sup {+-}} and B{sub d}{yields}{pi}{sup {+-}}K{sup {+-}} channels, and (iii) a larger than expected branching ratio in B{sub d}{yields}{pi}{sup 0}{pi}{sup 0} channel. We show that selective baryon-number violating Yukawa couplings in R-parity violating supersymmetry can reconcile all the measurements.
  • We study the rare decays B{sub u}{sup +}{yields}{pi}{sup +}l{sup +}l{sup -}, {rho}{sup +}l{sup +}l{sup -} and B{sub d}{sup 0}{yields}l{sup +}l{sup -} (l=e, {mu}) in the R-parity violating supersymmetric standard model. From the latest upper limits of B(B{sub u}{sup +}{yields}{pi}{sup +}l{sup +}l{sup -}) and B(B{sub d}{sup 0}{yields}l{sup +}l{sup -}), we have derived new upper bounds on the relevant R-parity violating couplings products, which are stronger than the existing ones. Using the constrained parameter space, we present the R-parity violating effects on the branching ratios and the forward-backward asymmetries of these decays. We find that B(B{sub d}{sup 0}{yields}l{sup +}l{sup -}) and B(B{submore » u}{sup +}{yields}{rho}{sup +}l{sup +}l{sup -}) could be enhanced several orders by the R-parity violating sneutrino and squark exchanges, respectively. The R-parity violating effects on the dilepton invariant mass spectra of B{sub u}{sup +}{yields}{pi}{sup +}l{sup +}l{sup -}, {rho}{sup +}l{sup +}l{sup -} and the normalized forward-backward asymmetry A{sub FB}(B{sub u}{sup +}{yields}{pi}{sup +}l{sup +}l{sup -}) and A{sub FB}(B{sub u}{sup +}{yields}{rho}{sup +}l{sup +}l{sup -}) are studied in detail. Our results could be used to probe the R-parity violating effects and will correlate with searches for the direct R-parity violating signals at the future experiments.« less
  • With the first measurements of the branching ratios and the direct CP asymmetries of B{sub s}{yields}K{sup -}K{sup +}, K{sup -}{pi}{sup +} decays by the CDF collaboration, we constrain the relevant parameter space of the minimal supersymmetric standard model with R-parity violation. Using the constrained R-parity violating couplings, we further examine their possible effects in B{sub s}{yields}K{sup -}*{pi}{sup +}, K{sup (*)-}{rho}{sup +} and K{sup (*){+-}}K{sup (*){+-}} decays. We find that some branching ratios and CP asymmetries are very sensitive to the R-parity violating couplings. The direct longitudinal CP asymmetries of tree-dominated process B{sub s}{yields}K*{sup -}{rho}{sup +} could be enlarged to {approx}70%more » and the longitudinal polarizations of B{sub s}{yields}K*{sup -}K*{sup +}, K*{sup -}{rho}{sup +} decays could be suppressed very much by the squark exchange couplings. Near future experiments at CERN LHC can test these predictions and shrink/reveal the parameter spaces of RPV SUSY.« less