Bulletin of the American Physical Society
2019 Joint Fall Meeting of the Texas Sections of APS, AAPT and Zone 13 of the SPS
Volume 64, Number 18
Friday–Saturday, October 25–26, 2019; Lubbock, Texas
Session B03: Nuclear & Particle I |
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Chair: Igor Volobouev, Texas Tech University Room: Student Union Building Mesa Room |
Friday, October 25, 2019 10:21AM - 10:33AM |
B03.00001: A dark matter scenario with two stable WIMPs which is consistent with the Fermi-LAT observations of gamma rays from the Galactic center and Omega Centauri Caden LaFontaine, Alejandro Arroyo, Reagan Thornberry, Dylan Blend, Gabriel Frohaug, Roland Allen In our multicomponent dark matter scenario [1], the dominant particle -- the lightest Higgson $H^0$ -- has a firm upper bound of 125 GeV/c$^2$ for its mass, while the lightest neutralino $\chi^0$ is subdominant and presumably has a substantially higher mass. The predictions of our scenario are consistent with the Fermi-LAT observations of gamma rays from the Galactic center [2,3] and Omega Centauri [4]. [1] Dylan Blend, Reagan Thornberry, Alejandro Arroyo, Gabriel Frohaug, Caden LaFontaine, and Roland E. Allen, "A multicomponent dark matter scenario and the experimental evidence supporting it", submitted. [2] Christopher Karwin, Simona Murgia, Tim M. P. Tait, Troy A. Porter, and Philip Tanedo, "Dark matter interpretation of the Fermi-LAT observation toward the Galactic Center", Phys. Rev. D 95, 103005 (2017), arXiv:1612.05687 [hep-ph], and references therein. [3] Rebecca K. Leane and Tracy R. Slatyer, “Dark Matter Strikes Back at the Galactic Center”,arXiv:1904.08430 [astro-ph.HE], and references therein. [4] Anthony M. Brown, Richard Massey, Thomas Lacroix, Louis E. Strigari, Azadeh Fattahi, and Céline Boehm, "The glow of annihilating dark matter in Omega Centauri", arXiv:1907.08564 [astro-ph.HE]. [Preview Abstract] |
Friday, October 25, 2019 10:33AM - 10:45AM |
B03.00002: A multicomponent dark matter scenario with two stable WIMPs which is consistent with the Planck observations Roland Allen, Reagan Thornberry, Alejandro Arroyo, Caden LaFontaine, Dylan Blend, Gabriel Frohaug We review a dark matter scenario which is ideal in the sense that (1) all of the well-known successes of supersymmetry are preserved, (2) the parameters can satisfy naturalness, (3) the addition of an extended Higgs sector implies a doubly rich plethora of new particles and new physics to be discovered in the near or foreseeable future, (4) the mass of the dominant dark matter WIMP is $\le 125$ GeV/c$^2$, (5) the gauge couplings of this particle are precisely defined, and (6) naturalness implies that its Higgs-mediated couplings are also comparable to those of a natural neutralino. This scenario, with two stable spin 1/2 WIMPs (a high-mass neutralino and a more abundant "Higgson" with a mass of $\le 125$ GeV/c$^2$), is consistent with the results of Planck and othr experiments, and it also suggests that detection should be near in a variety of experiments for direct, indirect, and collider detection. [Preview Abstract] |
Friday, October 25, 2019 10:45AM - 10:57AM |
B03.00003: A multicomponent dark matter scenario which is consistent with the antiproton observations of AMS-02 Alejandro Arroyo, Caden LaFontaine, Reagan Thornberry, Dylan Blend, Gabriel Frohaug, Roland Allen We have proposed a dark matter scenario [1] with two stable WIMPs (weakly interacting massive particles) -- the neutralino predicted by supersymmetry and a new particle resulting from an extended Higgs sector, which we have called the Higgson $H$ to distinguish it from the Higgs boson $h$ and the Higgsino $\tilde{h}$. The Higgson is rigorously predicted to have a mass of $\le 125$ GeV/c$^2$, and this prediction is consistent with the antiproton observations of AMS-02 [2,3] which provide evidence at the 3-5 $\sigma$ level for a dark matter particle with a mass near 100 GeV or below. [1] Dylan Blend, Reagan Thornberry, Alejandro Arroyo, Gabriel Frohaug, Caden LaFontaine, and Roland E Allen, "A multicomponent dark matter scenario and the experimental evidence supporting it'', submitted. [2] Ilias Cholis, Tim Linden, and Dan Hooper, "A Robust Excess in the Cosmic-Ray Antiproton Spectrum: Implications for Annihilating Dark Matter", Phys. Rev. D 99, 103026 (2019), arXiv:1903.02549 [astro-ph.HE]. [3] Alessandro Cuoco, Jan Heisig, Lukas Klamt, Michael Korsmeier, and Michael Krämer, "Scrutinizing the evidence for dark matter in cosmic-ray antiprotons", Phys. Rev. D 99, 103014 (2019), arXiv:1903.01472 [astro-ph.HE]. [Preview Abstract] |
Friday, October 25, 2019 10:57AM - 11:09AM |
B03.00004: ABSTRACT WITHDRAWN |
Friday, October 25, 2019 11:09AM - 11:21AM |
B03.00005: Search for resonance in inclusive and b-tagged dijet mass spectra in proton-proton collision at √𝐬=𝟏𝟑 TeV zhixing wang, Federico De Guio, Sungwon Lee Btag requirement is developed to increase the sensitivity to final states with jets coming from the hadronization of b-quarks. This algorithm is based on the reconstruction of tracks with large impact parameter and the identification of displaced secondary vertices. In this analysis, we use the >=1btag category with tight WP(Working Point) to search for bstar and 1btag category with medium WP to search for coloron. [Preview Abstract] |
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