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Title: Alignment limit of the NMSSM Higgs sector

Abstract

The Next-to-Minimal Supersymmetric extension of the Standard Model (NMSSM) with a Higgs boson of mass 125 GeV can be compatible with stop masses of order of the electroweak scale, thereby reducing the degree of fine-tuning necessary to achieve electroweak symmetry breaking. Moreover, in an attractive region of the NMSSM parameter space, corresponding to the \alignment limit" in which one of the neutral Higgs fields lies approximately in the same direction in field space as the doublet Higgs vacuum expectation value, the observed Higgs boson is predicted to have Standard- Model-like properties. We derive analytical expressions for the alignment conditions and show that they point toward a more natural region of parameter space for electroweak symmetry breaking, while allowing for perturbativity of the theory up to the Planck scale. Additionally, the alignment limit in the NMSSM leads to a well defined spectrum in the Higgs and Higgsino sectors, and yields a rich and interesting Higgs boson phenomenology that can be tested at the LHC. Here, we discuss the most promising channels for discovery and present several benchmark points for further study.

Authors:
 [1];  [2];  [3];  [4];  [5]
  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Univ. of Chicago, IL (United States). Enrico Fermi Inst. and Kavli Inst. for Cosmological Physics
  2. Univ. of California, Santa Cruz, CA (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States); Northwestern Univ., Evanston, IL (United States)
  4. Univ. of Michigan, Ann Arbor, MI (United States). Michigan Center for Theoretical Physics; Wayne State Univ., Detroit, MI (United States)
  5. Univ. of Chicago, IL (United States). Enrico Fermi Inst. and Kavli Inst. for Cosmological Physics; Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1230021
Alternate Identifier(s):
OSTI ID: 1238191
Report Number(s):
FERMILAB-PUB-15-407-T; EFI-15-32; MCTP-15-15; SCIPP-15/2; WSU-HEP-1505
Journal ID: ISSN 2470-0010; PRVDAQ; arXiv eprint number arXiv:1510.09137
Grant/Contract Number:  
AC02-07CH11359; FG02-13ER41958; SC0009924
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 93; Journal Issue: 3; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Phenomenology-HEP

Citation Formats

Carena, Marcela, Haber, Howard E., Low, Ian, Shah, Nausheen R., and Wagner, Carlos E. M. Alignment limit of the NMSSM Higgs sector. United States: N. p., 2016. Web. doi:10.1103/PhysRevD.93.035013.
Carena, Marcela, Haber, Howard E., Low, Ian, Shah, Nausheen R., & Wagner, Carlos E. M. Alignment limit of the NMSSM Higgs sector. United States. doi:10.1103/PhysRevD.93.035013.
Carena, Marcela, Haber, Howard E., Low, Ian, Shah, Nausheen R., and Wagner, Carlos E. M. Wed . "Alignment limit of the NMSSM Higgs sector". United States. doi:10.1103/PhysRevD.93.035013. https://www.osti.gov/servlets/purl/1230021.
@article{osti_1230021,
title = {Alignment limit of the NMSSM Higgs sector},
author = {Carena, Marcela and Haber, Howard E. and Low, Ian and Shah, Nausheen R. and Wagner, Carlos E. M.},
abstractNote = {The Next-to-Minimal Supersymmetric extension of the Standard Model (NMSSM) with a Higgs boson of mass 125 GeV can be compatible with stop masses of order of the electroweak scale, thereby reducing the degree of fine-tuning necessary to achieve electroweak symmetry breaking. Moreover, in an attractive region of the NMSSM parameter space, corresponding to the \alignment limit" in which one of the neutral Higgs fields lies approximately in the same direction in field space as the doublet Higgs vacuum expectation value, the observed Higgs boson is predicted to have Standard- Model-like properties. We derive analytical expressions for the alignment conditions and show that they point toward a more natural region of parameter space for electroweak symmetry breaking, while allowing for perturbativity of the theory up to the Planck scale. Additionally, the alignment limit in the NMSSM leads to a well defined spectrum in the Higgs and Higgsino sectors, and yields a rich and interesting Higgs boson phenomenology that can be tested at the LHC. Here, we discuss the most promising channels for discovery and present several benchmark points for further study.},
doi = {10.1103/PhysRevD.93.035013},
journal = {Physical Review D},
number = 3,
volume = 93,
place = {United States},
year = {2016},
month = {2}
}

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