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

Title: Not-so-well-tempered neutralino

Authors:
; ;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1390652
Grant/Contract Number:
SC0010107
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 96; Journal Issue: 5; Related Information: CHORUS Timestamp: 2017-09-15 10:59:49; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Profumo, Stefano, Stefaniak, Tim, and Stephenson-Haskins, Laurel. Not-so-well-tempered neutralino. United States: N. p., 2017. Web. doi:10.1103/PhysRevD.96.055018.
Profumo, Stefano, Stefaniak, Tim, & Stephenson-Haskins, Laurel. Not-so-well-tempered neutralino. United States. doi:10.1103/PhysRevD.96.055018.
Profumo, Stefano, Stefaniak, Tim, and Stephenson-Haskins, Laurel. Fri . "Not-so-well-tempered neutralino". United States. doi:10.1103/PhysRevD.96.055018.
@article{osti_1390652,
title = {Not-so-well-tempered neutralino},
author = {Profumo, Stefano and Stefaniak, Tim and Stephenson-Haskins, Laurel},
abstractNote = {},
doi = {10.1103/PhysRevD.96.055018},
journal = {Physical Review D},
number = 5,
volume = 96,
place = {United States},
year = {Fri Sep 15 00:00:00 EDT 2017},
month = {Fri Sep 15 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on September 15, 2018
Publisher's Accepted Manuscript

Save / Share:
  • Exponent parameters of the nonrelativistically optimized well-tempered Gaussian basis sets of Huzinaga and Klobukowski have been employed for Dirac--Fock--Roothaan calculations without their reoptimization. For light atoms He (atomic number {ital Z}=2)--Rh ({ital Z}=45), the number of exponent parameters used has been the same as the nonrelativistic basis sets and for heavier atoms Pd ({ital Z}=46)--Hg({ital Z}=80), two 2{ital p} (and three 3{ital d}) Gaussian basis functions have been augmented. The scheme of kinetic energy balance and the uniformly charged sphere model of atomic nuclei have been adopted. The qualities of the calculated basis sets are close to the Dirac--Fock limit.
  • A systematic calculation of new relativistic Gaussian basis sets is reported. The new basis sets are similar to the previously reported ones (J. Chem. Phys. {bold 91}, 4193 (1989)), but, in the calculation, the Breit interaction has been explicitly included besides the Dirac--Coulomb Hamiltonian. They have been adopted for the calculation of the self-consistent field effect on the Breit interaction energies and are expected to be useful for the studies on higher-order effects such as the electron correlations and other quantum electrodynamical effects.
  • We investigate the detectability of neutralino dark matter via direct and indirect searches as well as collider signatures of an SO(10) model with two intermediate scales. We compare the direct dark matter detection cross section and the muon flux due to neutralino annihilation in the Sun that we obtain in this model with minimal supergravity predictions and with the sensitivity of current and future experiments. In both cases, we find that the detectability improves as the model deviates more from minimal supergravity. In order to study collider signatures, we choose two benchmark points that represent the main phenomenological features ofmore » the model: a lower value of |{mu}| and reduced third-generation sfermion masses due to extra Yukawa coupling contributions in the renormalization group equations and increased first- and second-generation slepton masses due to new gaugino loop contributions. We show that measurements at the LHC can distinguish this model from minimal supergravity in both cases, by counting events containing leptonically decaying Z{sup 0} bosons, heavy neutral Higgs bosons, or like-sign lepton pairs. The methods we develop can be used more generally to characterize models of weak-scale supersymmetry.« less