Dark matter, shared asymmetries, and galactic gamma ray signals

被引：16
作者：
Fonseca, Nayara [1 ,2 ]
Necib, Lina [2 ]
Thaler, Jesse [2 ]
机构：
[1] Univ Sao Paulo, Inst Fis, BR-05508900 Sao Paulo, SP, Brazil
[2] MIT, Ctr Theoret Phys, Cambridge, MA 02139 USA
来源：
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2016年 / 02期
基金：
巴西圣保罗研究基金会;
关键词：
dark matter theory; dark matter experiments; baryon asymmetry; gamma ray experiments; STABLE PARTICLES; NUMBER;
D O I：
10.1088/1475-7516/2016/02/052
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We introduce a novel dark matter scenario where the visible sector and the dark sector share a common asymmetry. The two sectors are connected through an unstable mediator with baryon number one, allowing the standard model baryon asymmetry to be shared with dark matter via semi-annihilation. The present-day abundance of dark matter is then set by thermal freeze-out of this semi-annihilation process, yielding an asymmetric version of the WIMP miracle as well as promising signals for indirect detection experiments. As a proof of concept, we find a viable region of parameter space consistent with the observed Fermi excess of GeV gamma rays from the galactic center.
引用
收藏
页数：35
相关论文
共 113 条
  • [1] Astrophysical and dark matter interpretations of extended gamma-ray emission from the Galactic Center
    Abazajian, Kevork N.
    Canac, Nicolas
    Horiuchi, Shunsaku
    Kaplinghat, Manoj
    [J]. PHYSICAL REVIEW D, 2014, 90 (02):
  • [2] Detection of a gamma-ray source in the Galactic Center consistent with extended emission from dark matter annihilation and concentrated astrophysical emission
    Abazajian, Kevork N.
    Kaplinghat, Manoj
    [J]. PHYSICAL REVIEW D, 2012, 86 (08):
  • [3] The consistency of Fermi-LAT observations of the galactic center with a millisecond pulsar population in the central stellar cluster
    Abazajian, Kevork N.
    [J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2011, (03):
  • [4] Hidden on-shell mediators for the Galactic Center γ-ray excess
    Abdullah, Mohammad
    DiFranzo, Anthony
    Rajaraman, Arvind
    Tait, Tim M. P.
    Tanedo, Philip
    Wijangco, Alexander M.
    [J]. PHYSICAL REVIEW D, 2014, 90 (03):
  • [5] Ade P. A. R., ARXIV150201589 PLANC
  • [6] Measurement of the flux of primary cosmic ray antiprotons with energies of 60 MeV to 350 GeV in the PAMELA experiment
    Adriani, O.
    Bazilevskaya, G. A.
    Barbarino, G. C.
    Bellotti, R.
    Boezio, M.
    Bogomolov, E. A.
    Bonvicini, V.
    Bongi, M.
    Bonechi, L.
    Borisov, S. V.
    Bottai, S.
    Bruno, A.
    Vacchi, A.
    Vannuccini, E.
    Vasilyev, G. I.
    Voronov, S. A.
    Wu, J.
    Galper, A. M.
    Grishantseva, L. A.
    Danilchenko, I. A.
    Gillard, W.
    Jerse, G.
    Zampa, G.
    Zampa, N.
    Zverev, V. G.
    Casolino, M.
    Campana, D.
    Carbone, R.
    Karelin, A. V.
    Carlson, P.
    Castellini, G.
    Cafagna, F.
    Kvashnin, A. N.
    Koldashov, S. V.
    Koldobskiy, S. A.
    Krutkov, S. Y.
    Consiglio, L.
    Leonov, A. A.
    Mayorov, A. G.
    Malakhov, V. V.
    Malvezzi, W.
    Marcelli, L.
    Menn, W.
    Mikhailov, V. V.
    Mocchiutti, E.
    Monaco, A.
    Mori, N.
    Nikonov, N. N.
    Osteria, G.
    Palma, F.
    [J]. JETP LETTERS, 2013, 96 (10) : 621 - 627
  • [7] (In)direct detection of boosted dark matter
    Agashe, Kaustubh
    Cui, Yanou
    Necib, Lina
    Thaler, Jesse
    [J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2014, (10):
  • [8] Precision Measurement of the Proton Flux in Primary Cosmic Rays from Rigidity 1 GV to 1.8 TV with the Alpha Magnetic Spectrometer on the International Space Station
    Aguilar, M.
    Aisa, D.
    Alpat, B.
    Alvino, A.
    Ambrosi, G.
    Andeen, K.
    Arruda, L.
    Attig, N.
    Azzarello, P.
    Bachlechner, A.
    Barao, F.
    Barrau, A.
    Barrin, L.
    Bartoloni, A.
    Basara, L.
    Battarbee, M.
    Battiston, R.
    Bazo, J.
    Becker, U.
    Behlmann, M.
    Beischer, B.
    Berdugo, J.
    Bertucci, B.
    Bigongiari, G.
    Bindi, V.
    Bizzaglia, S.
    Bizzarri, M.
    Boella, G.
    de Boer, W.
    Bollweg, K.
    Bonnivard, V.
    Borgia, B.
    Borsini, S.
    Boschini, M. J.
    Bourquin, M.
    Burger, J.
    Cadoux, F.
    Cai, X. D.
    Capell, M.
    Caroff, S.
    Casaus, J.
    Cascioli, V.
    Castellini, G.
    Cernuda, I.
    Cerreta, D.
    Cervelli, F.
    Chae, M. J.
    Chang, Y. H.
    Chen, A. I.
    Chen, H.
    [J]. PHYSICAL REVIEW LETTERS, 2015, 114 (17)
  • [9] First Results from the LUX Dark Matter Experiment at the Sanford Underground Research Facility
    Akerib, D. S.
    Araujo, H. M.
    Bai, X.
    Bailey, A. J.
    Balajthy, J.
    Bedikian, S.
    Bernard, E.
    Bernstein, A.
    Bolozdynya, A.
    Bradley, A.
    Byram, D.
    Cahn, S. B.
    Carmona-Benitez, M. C.
    Chan, C.
    Chapman, J. J.
    Chiller, A. A.
    Chiller, C.
    Clark, K.
    Coffey, T.
    Currie, A.
    Curioni, A.
    Dazeley, S.
    de Viveiros, L.
    Dobi, A.
    Dobson, J.
    Dragowsky, E. M.
    Druszkiewicz, E.
    Edwards, B.
    Faham, C. H.
    Fiorucci, S.
    Flores, C.
    Gaitskell, R. J.
    Gehman, V. M.
    Ghag, C.
    Gibson, K. R.
    Gilchriese, M. G. D.
    Hall, C.
    Hanhardt, M.
    Hertel, S. A.
    Horn, M.
    Huang, D. Q.
    Ihm, M.
    Jacobsen, R. G.
    Kastens, L.
    Kazkaz, K.
    Knoche, R.
    Kyre, S.
    Lander, R.
    Larsen, N. A.
    Lee, C.
    [J]. PHYSICAL REVIEW LETTERS, 2014, 112 (09)
  • [10] [Anonymous], ARXIV13076862
12345678910