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Title: The mass spectra, hierarchy and cosmology of B-L MSSM heterotic compactifications

Abstract

The matter spectrum of the MSSM, including three right-handed neutrino supermultiplets and one pair of Higgs-Higgs conjugate superfields, can be obtained by compactifying the E₈ x E₈ heterotic string and M-theory on Calabi-Yau manifolds with specific SU(4) vector bundles. These theories have the standard model gauge group augmented by an additional gauged U(1)B-L. Their minimal content requires that the B-L gauge symmetry be spontaneously broken by a vacuum expectation value of at least one right-handed neutrino. In previous papers, we presented the results of a quasi-analytic renormalization group analysis showing that B-L gauge symmetry is indeed radiatively broken with an appropriate B-L/electroweak hierarchy. In this paper, we extend these results by 1) enlarging the initial parameter space and 2) explicitly calculating all renormalization group equations numerically. The regions of the initial parameter space leading to realistic vacua are presented and the B-L/electroweak hierarchy computed over these regimes. At representative points, the mass spectrum for all particles and Higgs fields is calculated and shown to be consistent with present experimental bounds. Some fundamental phenomenological signatures of a non-zero right-handed neutrino expectation value are discussed, particularly the cosmology and proton lifetime arising from induced lepton and baryon number violating interactions.

Authors:
 [1];  [1]
  1. Univ. of Pennsylvania, Philadelphia, PA (United States). Dept. of Physics
Publication Date:
Research Org.:
Univ. of Pennsylvania, Philadelphia, PA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1201590
Grant/Contract Number:  
FG02-95ER40893
Resource Type:
Accepted Manuscript
Journal Name:
International Journal of Modern Physics A
Additional Journal Information:
Journal Volume: 26; Journal Issue: 09; Journal ID: ISSN 0217-751X
Publisher:
World Scientific
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; mass spectra; heterotic string theory; hierarchy; MSSM; B-L symmetry

Citation Formats

Ambroso, Michael, and Ovrut, Burt A. The mass spectra, hierarchy and cosmology of B-L MSSM heterotic compactifications. United States: N. p., 2011. Web. doi:10.1142/S0217751X11052943.
Ambroso, Michael, & Ovrut, Burt A. The mass spectra, hierarchy and cosmology of B-L MSSM heterotic compactifications. United States. https://doi.org/10.1142/S0217751X11052943
Ambroso, Michael, and Ovrut, Burt A. Sun . "The mass spectra, hierarchy and cosmology of B-L MSSM heterotic compactifications". United States. https://doi.org/10.1142/S0217751X11052943. https://www.osti.gov/servlets/purl/1201590.
@article{osti_1201590,
title = {The mass spectra, hierarchy and cosmology of B-L MSSM heterotic compactifications},
author = {Ambroso, Michael and Ovrut, Burt A.},
abstractNote = {The matter spectrum of the MSSM, including three right-handed neutrino supermultiplets and one pair of Higgs-Higgs conjugate superfields, can be obtained by compactifying the E₈ x E₈ heterotic string and M-theory on Calabi-Yau manifolds with specific SU(4) vector bundles. These theories have the standard model gauge group augmented by an additional gauged U(1)B-L. Their minimal content requires that the B-L gauge symmetry be spontaneously broken by a vacuum expectation value of at least one right-handed neutrino. In previous papers, we presented the results of a quasi-analytic renormalization group analysis showing that B-L gauge symmetry is indeed radiatively broken with an appropriate B-L/electroweak hierarchy. In this paper, we extend these results by 1) enlarging the initial parameter space and 2) explicitly calculating all renormalization group equations numerically. The regions of the initial parameter space leading to realistic vacua are presented and the B-L/electroweak hierarchy computed over these regimes. At representative points, the mass spectrum for all particles and Higgs fields is calculated and shown to be consistent with present experimental bounds. Some fundamental phenomenological signatures of a non-zero right-handed neutrino expectation value are discussed, particularly the cosmology and proton lifetime arising from induced lepton and baryon number violating interactions.},
doi = {10.1142/S0217751X11052943},
journal = {International Journal of Modern Physics A},
number = 09,
volume = 26,
place = {United States},
year = {Sun Apr 10 00:00:00 EDT 2011},
month = {Sun Apr 10 00:00:00 EDT 2011}
}

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Works referencing / citing this record:

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