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Title: Return of the WIMP: Missing energy signals and the Galactic Center excess

Abstract

In a recent work, we emphasized that an excess in tri-lepton events plusmissing energy observed by the ATLAS experiment at the LHC could be interpreted asa signal of low energy supersymmetry. In such a scenario the lightest neutralino massis approximatelymχ≃60 GeV and the direct Dark Matter detection cross section isnaturally below the current bound. In this work we present simple extensions of thisscenario that lead to an explanation of the gamma ray excess at the center of the galaxyobserved by Fermi-LAT, as well as the anti-proton excess observed by AMS-02. Theseextensions include the addition of a small CP violating phase in the neutralino sector orthe addition of a light CP-odd Higgs scalar. Our study is of special relevance in view ofa recent analysis that casts doubt on the previously accepted preference for mili-secondpulsars as the origin of the galactic center excess

Authors:
; ORCiD logo; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Univ. of Chicago, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1560292
Alternate Identifier(s):
OSTI ID: 1545085; OSTI ID: 1593860
Report Number(s):
arXiv:1905.03768; FERMILAB-PUB-19-199-T; EFI-19-8; WSU-HEP-1904
Journal ID: ISSN 2470-0010; PRVDAQ; 055002
Grant/Contract Number:  
AC02-07CH11359; AC02-06CH11357; SC0007983; FG02-13ER41958; SC0009924
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Name: Physical Review D Journal Volume: 100 Journal Issue: 5; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Carena, Marcela, Osborne, James, Shah, Nausheen R., and Wagner, Carlos E. M. Return of the WIMP: Missing energy signals and the Galactic Center excess. United States: N. p., 2019. Web. doi:10.1103/PhysRevD.100.055002.
Carena, Marcela, Osborne, James, Shah, Nausheen R., & Wagner, Carlos E. M. Return of the WIMP: Missing energy signals and the Galactic Center excess. United States. doi:10.1103/PhysRevD.100.055002.
Carena, Marcela, Osborne, James, Shah, Nausheen R., and Wagner, Carlos E. M. Tue . "Return of the WIMP: Missing energy signals and the Galactic Center excess". United States. doi:10.1103/PhysRevD.100.055002.
@article{osti_1560292,
title = {Return of the WIMP: Missing energy signals and the Galactic Center excess},
author = {Carena, Marcela and Osborne, James and Shah, Nausheen R. and Wagner, Carlos E. M.},
abstractNote = {In a recent work, we emphasized that an excess in tri-lepton events plusmissing energy observed by the ATLAS experiment at the LHC could be interpreted asa signal of low energy supersymmetry. In such a scenario the lightest neutralino massis approximatelymχ≃60 GeV and the direct Dark Matter detection cross section isnaturally below the current bound. In this work we present simple extensions of thisscenario that lead to an explanation of the gamma ray excess at the center of the galaxyobserved by Fermi-LAT, as well as the anti-proton excess observed by AMS-02. Theseextensions include the addition of a small CP violating phase in the neutralino sector orthe addition of a light CP-odd Higgs scalar. Our study is of special relevance in view ofa recent analysis that casts doubt on the previously accepted preference for mili-secondpulsars as the origin of the galactic center excess},
doi = {10.1103/PhysRevD.100.055002},
journal = {Physical Review D},
number = 5,
volume = 100,
place = {United States},
year = {2019},
month = {9}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/PhysRevD.100.055002

Citation Metrics:
Cited by: 2 works
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Figures / Tables:

TABLE I TABLE I: Benchmark values of CPVMSSM input parameters for micrOMEGAs. The squark and slepton soft masses are degenerate between generations and chiralities, and all unlisted A terms are zero.

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    Works referencing / citing this record:

    Heavy dark matter particle annihilation in dwarf spheroidal galaxies: Radio signals at the SKA telescope
    journal, January 2020


      Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.