Abstract
Galactic Dark Matter (DM) annihilations can produce cosmic-ray anti-nuclei via the nuclear coalescence of the anti-protons and anti-neutrons originated directly from the annihilation process. Since anti-deuterons have been shown to offer a distinctive DM signal, with potentially good prospects for detection in large portions of the DM-particle parameter space, we explore here the production of heavier anti-nuclei, specifically anti-helium. Even more than for anti-deuterons, the DM-produced anti-He flux can be mostly prominent over the astrophysical anti-He background at low kinetic energies, typically below 3-5 GeV/n. However, the larger number of anti-nucleons involved in the formation process makes the anti-He flux extremely small. We therefore explore, for a few DM benchmark cases, whether the yield is sufficient to allow for anti-He detection in current-generation experiments, such as Ams-02. We account for the uncertainties due to the propagation in the Galaxy and to the uncertain details of the coalescence process, and we consider the constraints already imposed by anti-proton searches. We find that only for very optimistic configurations might it be possible to achieve detection with current generation detectors. We estimate that, in more realistic configurations, an increase in experimental sensitivity at low kinetic energies of about a factor of 500-1000 would allow to start probing DM through the rare cosmic anti-He production.
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References
F. Donato, N. Fornengo and P. Salati, Anti-deuterons as a signature of supersymmetric dark matter, Phys. Rev. D 62 (2000) 043003 [hep-ph/9904481] [INSPIRE].
H. Baer and S. Profumo, Low energy antideuterons: shedding light on dark matter, JCAP 12 (2005) 008 [astro-ph/0510722] [INSPIRE].
F. Donato, N. Fornengo and D. Maurin, Antideuteron fluxes from dark matter annihilation in diffusion models, Phys. Rev. D 78 (2008) 043506 [arXiv:0803.2640] [INSPIRE].
C.B. Brauninger and M. Cirelli, Anti-deuterons from heavy Dark Matter, Phys. Lett. B 678 (2009) 20 [arXiv:0904.1165] [INSPIRE].
A. Ibarra and D. Tran, Antideuterons from Dark Matter Decay, JCAP 06 (2009) 004 [arXiv:0904.1410] [INSPIRE].
Y. Cui, J.D. Mason and L. Randall, General Analysis of Antideuteron Searches for Dark Matter, JHEP 11 (2010) 017 [arXiv:1006.0983] [INSPIRE].
L.A. Dal and M. Kachelriess, Antideuterons from dark matter annihilations and hadronization model dependence, Phys. Rev. D 86 (2012) 103536 [arXiv:1207.4560] [INSPIRE].
A. Ibarra and S. Wild, Prospects of antideuteron detection from dark matter annihilations or decays at AMS-02 and GAPS, JCAP 02 (2013) 021 [arXiv:1209.5539] [INSPIRE].
M. Kadastik, M. Raidal and A. Strumia, Enhanced anti-deuteron Dark Matter signal and the implications of PAMELA, Phys. Lett. B 683 (2010) 248 [arXiv:0908.1578] [INSPIRE].
N. Fornengo, L. Maccione and A. Vittino, Dark matter searches with cosmic antideuterons: status and perspectives, JCAP 09 (2013) 031 [arXiv:1306.4171] [INSPIRE].
A. Kounine, Status of the AMS Experiment, arXiv:1009.5349 [INSPIRE].
F.R. Spada, Antimatter and DM Search in Space With AMS-02, in Proceedings of the 28th International Conference on Physics in Collision, Perugia, 2008, eConf C 080625 (2008) 0023.
AMS-02 collaboration, F.R. Spada, Antimatter and Dark Matter search in space with AMS-02, arXiv:0810.3831 [INSPIRE].
J.I. Kapusta, Mechanisms for deuteron production in relativistic nuclear collisions, Phys. Rev. C 21 (1980) 1301 [INSPIRE].
L.P. Csernai and J.I. Kapusta, Entropy and Cluster Production in Nuclear Collisions, Phys. Rept. 131 (1986) 223 [INSPIRE].
A. Schwarzschild and C. Zupancic, Production of Tritons, Deuterons, Nucleons and Mesons by 30-GeV Protons on A-1, Be and Fe Targets, Phys. Rev. 129 (1963) 854 [INSPIRE].
R. Duperray, B. Baret, D. Maurin, G. Boudoul, A. Barrau et al., Flux of light antimatter nuclei near Earth, induced by cosmic rays in the Galaxy and in the atmosphere, Phys. Rev. D 71 (2005) 083013 [astro-ph/0503544] [INSPIRE].
P. Chardonnet, J. Orloff and P. Salati, The Production of antimatter in our galaxy, Phys. Lett. B 409 (1997) 313 [astro-ph/9705110] [INSPIRE].
T. Sjöstrand, S. Mrenna and P.Z. Skands, PYTHIA 6.4 Physics and Manual, JHEP 05 (2006) 026 [hep-ph/0603175] [INSPIRE].
Y. Antipov, S.P. Denisov, S.V. Donskov, Y. Gorin, V.A. Kachanov et al., Observation of antihelium-3, Nucl. Phys. B 31 (1971) 235 [INSPIRE].
N.K. Vishnevsky, M.I. Grachev, V.I. Rykalin, V.G. Lapshin, V.I. Solyanik et al., Observation of antitritium, Yad. Fiz. 20 (1974) 694 [INSPIRE].
W. Bozzoli, A. Bussiere, G. Giacomelli, E. Lesquoy, R. Meunier et al., Production of d, T, 3 He, \( \overline{d} \) , Anti-t and Anti- 3 He by 200-GeV Protons, Nucl. Phys. B 144 (1978) 317 [INSPIRE].
A. Bussiere, G. Giacomelli, E. Lesquoy, R. Meunier, L. Moscoso et al., Particle Production and Search for Longlived Particles in 200-GeV/c to 240-GeV/c Proton — Nucleon Collisions, Nucl. Phys. B 174 (1980) 1 [INSPIRE].
M.C. Lemaire, S. Nagamiya, S. Schnetzer, H. Steiner and I. Tanihata, Composite particle emission in relativistic heavy ion collisions, Phys. Lett. B 85 (1979) 38.
ALEPH collaboration, S. Schael et al., Deuteron and anti-deuteron production in e + e − collisions at the Z resonance, Phys. Lett. B 639 (2006) 192 [hep-ex/0604023] [INSPIRE].
M. Cirelli, G. Corcella, A. Hektor, G. Hutsi, M. Kadastik et al., PPPC 4 DM ID: A Poor Particle Physicist Cookbook for Dark Matter Indirect Detection, JCAP 03 (2011) 051 [Erratum ibid. 1210 (2012) E01] [arXiv:1012.4515] [INSPIRE].
R. Duperray, Production and propagation de noyaux légers d’antimatière dans la Galaxie, PhD thesis, University of Grenoble, 2004.
F. Donato, N. Fornengo, D. Maurin and P. Salati, Antiprotons in cosmic rays from neutralino annihilation, Phys. Rev. D 69 (2004) 063501 [astro-ph/0306207] [INSPIRE].
M. Cirelli and G. Giesen, Antiprotons from Dark Matter: Current constraints and future sensitivities, JCAP 04 (2013) 015 [arXiv:1301.7079] [INSPIRE].
N. Fornengo, L. Maccione and A. Vittino, Constraints on particle dark matter from cosmic-ray antiprotons, JCAP 04 (2014) 003 [arXiv:1312.3579] [INSPIRE].
PAMELA collaboration, O. Adriani et al., PAMELA results on the cosmic-ray antiproton flux from 60 MeV to 180 GeV in kinetic energy, Phys. Rev. Lett. 105 (2010) 121101 [arXiv:1007.0821] [INSPIRE].
T.K. Gaisser and E.H. Levy, Astrophysical Implications of Cosmic Ray anti-Protons, Phys. Rev. D 10 (1974) 1731 [INSPIRE].
AMS collaboration, J. Alcaraz et al., Search for anti-helium in cosmic rays, Phys. Lett. B 461 (1999) 387 [hep-ex/0002048] [INSPIRE].
K. Abe, H. Fuke, S. Haino, T. Hams, M. Hasegawa et al., Search for Antihelium with the BESS-Polar Spectrometer, Phys. Rev. Lett. 108 (2012) 131301 [arXiv:1201.2967] [INSPIRE].
A.G. Mayorov, A.M. Galper, O. Adriani, G.A. Bazilevskaya, G. Barbarino et al., Upper limit on the antihelium flux in primary cosmic rays, JETP Lett. 93 (2011) 628 [INSPIRE].
PAMELA collaboration, O. Adriani et al., PAMELA Measurements of Cosmic-ray Proton and Helium Spectra, Science 332 (2011) 69 [arXiv:1103.4055] [INSPIRE].
AMS collaboration, V. Choutko, Precision Measurement of the Cosmic Ray Helium Flux with AMS Experiment, 143.107.180.38/indico/contributionDisplay.py?contribId=1262&sessionId=3&confId=0, in Proceedings of the 33rd International Cosmic Ray Conference, Rio de Janeiro, 2013.
K. Mori, C.J. Hailey, E.A. Baltz, W.W. Craig, M. Kamionkowski et al., A Novel antimatter detector based on x-ray deexcitation of exotic atoms, Astrophys. J. 566 (2002) 604 [astro-ph/0109463] [INSPIRE].
C.J. Hailey, W.W. Craig, F.A. Harrison, J. Hong, K. Mori et al., Development of the gaseous antiparticle spectrometer for space - based antimatter detection, Nucl. Instrum. Meth. B 214 (2004) 122 [astro-ph/0306589] [INSPIRE].
C.J. Hailey, T. Aramaki, W.W. Craig, L. Fabris, F. Gahbauer et al., Accelerator testing of the general antiparticle spectrometer, a novel approach to indirect dark matter detection, JCAP 01 (2006) 007 [astro-ph/0509587] [INSPIRE].
J.E. Koglin, T. Aramaki, S.E. Boggs, W.W. Craig, H. Fuke et al., Antideuterons as an indirect dark matter signature: Design and preparation for a balloon-born GAPS experiment, J. Phys. Conf. Ser. 120 (2008) 042011 [INSPIRE].
A. Ibarra and S. Wild, Determination of the Cosmic Antideuteron Flux in a Monte Carlo approach, Phys. Rev. D 88 (2013) 023014 [arXiv:1301.3820] [INSPIRE].
B. Alper, H. Boeggild, P.S.L. Booth, F. Bulos, L.J. Carroll et al., Large angle production of stable particles heavier than the proton and a search for quarks at the CERN intersecting storage rings, Phys. Lett. B 46 (1973) 265 [INSPIRE].
British-Scandinavian-MIT collaboration, S. Henning et al., Production of Deuterons and anti-Deuterons in Proton Proton Collisions at the CERN ISR, Lett. Nuovo Cim. 21 (1978) 189 [INSPIRE].
L.A. Dal and A.R. Raklev, Antideuteron Limits on Decaying Dark Matter with a Tuned Formation Model, Phys. Rev. D 89 (2014) 103504 [arXiv:1402.6259] [INSPIRE].
M.J. Christ, S. Dake, J.H. Derrickson, W.F. Fountain, M. Fuki et al., Cosmic-ray proton and helium spectra: Results from the JACEE Experiment, Astrophys. J. 502 (1998) 278 [INSPIRE].
RUNJOB collaboration, V.A. Derbina et al., Cosmic-ray spectra and composition in the energy range of 10-TeV - 1000-TeV per particle obtained by the RUNJOB experiment, Astrophys. J. 628 (2005) L41 [INSPIRE].
A.D. Panov A.D. et al, Energy spectra of abundant nuclei of primary cosmic rays from the data of ATIC-2 experiment: Final results, Bull. Russ. Acad. Sci. Phys. 73 (2009) 564.
Y.S. Yoon, H.S. Ahn, P.S. Allison, M.G. Bagliesi, J.J. Beatty et al., Cosmic-Ray Proton and Helium Spectra from the First CREAM Flight, Astrophys. J. 728 (2011) 122 [arXiv:1102.2575] [INSPIRE].
PAMELA collaboration, O. Adriani et al., PAMELA Measurements of Cosmic-ray Proton and Helium Spectra, Science 332 (2011) 69 [arXiv:1103.4055] [INSPIRE].
on Behalf of the AMS-02 collaboration, C. Consolandi, Primary Cosmic Ray Proton Flux Measured by AMS-02, arXiv:1402.0467 [INSPIRE].
E. Carlson, A. Coogan, T. Linden, S. Profumo, A. Ibarra et al., Antihelium from Dark Matter, arXiv:1401.2461 [INSPIRE].
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Cirelli, M., Fornengo, N., Taoso, M. et al. Anti-helium from dark matter annihilations. J. High Energ. Phys. 2014, 9 (2014). https://doi.org/10.1007/JHEP08(2014)009
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DOI: https://doi.org/10.1007/JHEP08(2014)009