skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Large loop effects of extra supersymmetric Higgs doublets to CP violation in B{sup 0} mixing

Abstract

We consider more than one pair of SU(2){sub L} doublet Higgs supermultiplets in a generic supersymmetric extension of the standard model, and calculate their one-loop contributions to the soft mass insertions {delta}{sub LL} etc. We find that, if large supersymmetry breaking in this sector is realized, the loop effects can give rise to large contributions to the soft mass insertions, meaning that they can generate large flavor-changing neutral currents and CP violations. We apply our result to a recently proposed model based on the discrete Q{sub 6} family group, and calculate the nondiagonal matrix element M{sub 12} of the neutral meson systems. We focus our attention on the extra phases {phi}{sub d,s}{sup {Delta}}in B{sub d,s} mixing and flavor-specific CP asymmetries a{sub sl}{sup d,s} in neutral B decays and obtain values that can be about 1 order of magnitude larger than the standard model predictions. Our final results are comparable with the recent experimental observations at D0 and CDF, but they are still about a factor of 5 smaller than the recently measured dimuon asymmetry from D0.

Authors:
;  [1]
  1. Institute for Theoretical Physics, Kanazawa University, Kanazawa 920-1192 (Japan)
Publication Date:
OSTI Identifier:
21432312
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 82; Journal Issue: 7; Other Information: DOI: 10.1103/PhysRevD.82.075001; (c) 2010 American Institute of Physics; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ASYMMETRY; B MESONS; B NEUTRAL MESONS; CP INVARIANCE; FERMILAB COLLIDER DETECTOR; FLAVOR MODEL; FORECASTING; HIGGS BOSONS; HIGGS MODEL; MASS; MATRIX ELEMENTS; NEUTRAL CURRENTS; PARTICLE DECAY; STANDARD MODEL; SU-2 GROUPS; SUPERMULTIPLETS; SUPERSYMMETRY; SYMMETRY BREAKING; ALGEBRAIC CURRENTS; BEAUTY MESONS; BEAUTY PARTICLES; BOSONS; COMPOSITE MODELS; CURRENTS; DECAY; ELEMENTARY PARTICLES; FIELD THEORIES; GRAND UNIFIED THEORY; HADRONS; INVARIANCE PRINCIPLES; LIE GROUPS; MATHEMATICAL MODELS; MEASURING INSTRUMENTS; MESONS; MULTIPLETS; PARTICLE MODELS; POSTULATED PARTICLES; PSEUDOSCALAR MESONS; QUANTUM FIELD THEORY; QUARK MODEL; RADIATION DETECTORS; SU GROUPS; SYMMETRY; SYMMETRY GROUPS; UNIFIED GAUGE MODELS

Citation Formats

Kubo, Jisuke, Lenz, Alexander, and Institut fuer Physik, Technische Universitaet Dortmund, D-44221 Dortmund, Germany, and Institut fuer Theoretische Physik, Universitaet Regensburg, D-93040 Regensburg. Large loop effects of extra supersymmetric Higgs doublets to CP violation in B{sup 0} mixing. United States: N. p., 2010. Web. doi:10.1103/PHYSREVD.82.075001.
Kubo, Jisuke, Lenz, Alexander, & Institut fuer Physik, Technische Universitaet Dortmund, D-44221 Dortmund, Germany, and Institut fuer Theoretische Physik, Universitaet Regensburg, D-93040 Regensburg. Large loop effects of extra supersymmetric Higgs doublets to CP violation in B{sup 0} mixing. United States. https://doi.org/10.1103/PHYSREVD.82.075001
Kubo, Jisuke, Lenz, Alexander, and Institut fuer Physik, Technische Universitaet Dortmund, D-44221 Dortmund, Germany, and Institut fuer Theoretische Physik, Universitaet Regensburg, D-93040 Regensburg. 2010. "Large loop effects of extra supersymmetric Higgs doublets to CP violation in B{sup 0} mixing". United States. https://doi.org/10.1103/PHYSREVD.82.075001.
@article{osti_21432312,
title = {Large loop effects of extra supersymmetric Higgs doublets to CP violation in B{sup 0} mixing},
author = {Kubo, Jisuke and Lenz, Alexander and Institut fuer Physik, Technische Universitaet Dortmund, D-44221 Dortmund, Germany, and Institut fuer Theoretische Physik, Universitaet Regensburg, D-93040 Regensburg},
abstractNote = {We consider more than one pair of SU(2){sub L} doublet Higgs supermultiplets in a generic supersymmetric extension of the standard model, and calculate their one-loop contributions to the soft mass insertions {delta}{sub LL} etc. We find that, if large supersymmetry breaking in this sector is realized, the loop effects can give rise to large contributions to the soft mass insertions, meaning that they can generate large flavor-changing neutral currents and CP violations. We apply our result to a recently proposed model based on the discrete Q{sub 6} family group, and calculate the nondiagonal matrix element M{sub 12} of the neutral meson systems. We focus our attention on the extra phases {phi}{sub d,s}{sup {Delta}}in B{sub d,s} mixing and flavor-specific CP asymmetries a{sub sl}{sup d,s} in neutral B decays and obtain values that can be about 1 order of magnitude larger than the standard model predictions. Our final results are comparable with the recent experimental observations at D0 and CDF, but they are still about a factor of 5 smaller than the recently measured dimuon asymmetry from D0.},
doi = {10.1103/PHYSREVD.82.075001},
url = {https://www.osti.gov/biblio/21432312}, journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 7,
volume = 82,
place = {United States},
year = {Fri Oct 01 00:00:00 EDT 2010},
month = {Fri Oct 01 00:00:00 EDT 2010}
}