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Title: Fermion dipole moments in supersymmetric models with explicitly broken R parity

Abstract

We present a simple analysis that allows us to extract the leading mass dependence of the dipole moment of matter fermions that might be induced by new physics. We present explicit results for the supersymmetric model with broken R parity as an illustration. We show that the extra contributions to the electric dipole moment of fermions from Re{sub p} interactions can occur only at the two-loop level, contrary to claims in the literature. We further find that unlike the generic leptoquark models, the extra contributions to the dipole moments of the leptons can only be enhanced by m{sub b}/m{sub l} and not by m{sub t}/m{sub l} relative to the expectations in the standard model. An interesting feature about this enhancement of these dipole moments is that it does not involve unknown mixing angles. We then use experimental constraints on the electric dipole moments of e{sup -} and n to obtain bounds on (the imaginary part of) products of Re{sub p} couplings, and show that bounds claimed in the literature are too stringent by many orders of magnitude. (c) 2000 The American Physical Society.

Authors:
 [1];  [2];  [3];  [2]
  1. Centre for Theoretical Studies, Indian Institute of Science, Bangalore, 560012, (India)
  2. Department of Physics and Astronomy, Univ. of Hawaii at Manoa, Honolulu, Hawaii 96822 (United States)
  3. Theory Group, Physical Research Laboratory, Navrangpura, Ahmedabad, 380 009, (India)
Publication Date:
OSTI Identifier:
20216459
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 61; Journal Issue: 11; Other Information: PBD: 1 Jun 2000; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; FERMIONS; DIPOLE MOMENTS; SUPERSYMMETRY; UNIFIED GAUGE MODELS; THEORETICAL DATA

Citation Formats

Godbole, R. M., Pakvasa, S., Rindani, S. D., and Tata, X. Fermion dipole moments in supersymmetric models with explicitly broken R parity. United States: N. p., 2000. Web. doi:10.1103/PhysRevD.61.113003.
Godbole, R. M., Pakvasa, S., Rindani, S. D., & Tata, X. Fermion dipole moments in supersymmetric models with explicitly broken R parity. United States. doi:10.1103/PhysRevD.61.113003.
Godbole, R. M., Pakvasa, S., Rindani, S. D., and Tata, X. Thu . "Fermion dipole moments in supersymmetric models with explicitly broken R parity". United States. doi:10.1103/PhysRevD.61.113003.
@article{osti_20216459,
title = {Fermion dipole moments in supersymmetric models with explicitly broken R parity},
author = {Godbole, R. M. and Pakvasa, S. and Rindani, S. D. and Tata, X.},
abstractNote = {We present a simple analysis that allows us to extract the leading mass dependence of the dipole moment of matter fermions that might be induced by new physics. We present explicit results for the supersymmetric model with broken R parity as an illustration. We show that the extra contributions to the electric dipole moment of fermions from Re{sub p} interactions can occur only at the two-loop level, contrary to claims in the literature. We further find that unlike the generic leptoquark models, the extra contributions to the dipole moments of the leptons can only be enhanced by m{sub b}/m{sub l} and not by m{sub t}/m{sub l} relative to the expectations in the standard model. An interesting feature about this enhancement of these dipole moments is that it does not involve unknown mixing angles. We then use experimental constraints on the electric dipole moments of e{sup -} and n to obtain bounds on (the imaginary part of) products of Re{sub p} couplings, and show that bounds claimed in the literature are too stringent by many orders of magnitude. (c) 2000 The American Physical Society.},
doi = {10.1103/PhysRevD.61.113003},
journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 11,
volume = 61,
place = {United States},
year = {2000},
month = {6}
}