A dark matter model that reconciles tensions between the cosmic-ray e± excess and the gamma-ray and CMB constraints

被引：18

作者：

Xiang, Qian-Fei ^{[1
,2
]}

Bi, Xiao-Jun ^{[1
]}

Lin, Su-Jie ^{[1
]}

Yin, Peng-Fei ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China

[2] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China

来源：

PHYSICS LETTERS B | 2017年 / 773卷

基金：

中国国家自然科学基金;

关键词：

PROPAGATION; ANISOTROPY;

D O I：

10.1016/j.physletb.2017.09.003

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The cosmic-ray (CR) e(+/-) excess observed by AMS-02 can be explained by dark matter (DM) annihilation. However, the DM explanation requires a large annihilation cross section which is strongly disfavored by other observations, such as the Fermi-LAT gamma-ray observation of dwarf galaxies and the Planck observation of the cosmic microwave background (CMB). Moreover, the DM annihilation cross section required by the CR e(sic) excess is also too large to generate the correct DM relic density with thermal production. In this work we use the Breit-Wigner mechanism with a velocity dependent DM annihilation cross section to reconcile these tensions. If DM particles accounting for the CR e +/- excess with v similar to O(10(-3)) are very close to a resonance in the physical pole case, their annihilation cross section in the Galaxy reaches a maximal value. On the other hand, the annihilation cross section would be suppressed for DM particles with smaller relative velocities in dwarf galaxies and at recombination, which may affect the gamma-ray and CMB observations, respectively. We find a proper parameter region that can simultaneously explain the AMS-02 results and the thermal relic density, while satisfying the Fermi-LAT and Planck constraints. (C) 2017 The Authors. Published by Elsevier B.V.

引用

页码：448 / 454

页数：7

共 58 条

[1] High Statistics Measurement of the Positron Fraction in Primary Cosmic Rays of 0.5-500 GeV with the Alpha Magnetic Spectrometer on the International Space Station [J].

Accardo, L. ;

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. ;

Carosi, G. ;

Casaus, J. ;

Cascioli, V. ;

Castellini, G. ;

Cernuda, I. ;

Cerreta, D. ;

Cervelli, F. ;

Chae, M. J. ;

Chang, Y. H. .

PHYSICAL REVIEW LETTERS, 2014, 113 (12)

[2] Dark matter constraints from observations of 25 Milky Way satellite galaxies with the Fermi Large Area Telescope [J].

Ackermann, M. ;

Albert, A. ;

Anderson, B. ;

Baldini, L. ;

Ballet, J. ;

Barbiellini, G. ;

Bastieri, D. ;

Bechtol, K. ;

Bellazzini, R. ;

Bissaldi, E. ;

Bloom, E. D. ;

Bonamente, E. ;

Bouvier, A. ;

Brandt, T. J. ;

Bregeon, J. ;

Brigida, M. ;

Bruel, P. ;

Buehler, R. ;

Buson, S. ;

Caliandro, G. A. ;

Cameron, R. A. ;

Caragiulo, M. ;

Caraveo, P. A. ;

Cecchi, C. ;

Charles, E. ;

Chekhtman, A. ;

Chiang, J. ;

Ciprini, S. ;

Claus, R. ;

Cohen-Tanugi, J. ;

Conrad, J. ;

D'Ammando, F. ;

de Angelis, A. ;

Dermer, C. D. ;

Digel, S. W. ;

do Couto e Silva, E. ;

Drell, P. S. ;

Drlica-Wagner, A. ;

Essig, R. ;

Favuzzi, C. ;

Ferrara, E. C. ;

Franckowiak, A. ;

Fukazawa, Y. ;

Funk, S. ;

Fusco, P. ;

Gargano, F. ;

Gasparrini, D. ;

Giglietto, N. ;

Giroletti, M. ;

Godfrey, G. .

PHYSICAL REVIEW D, 2014, 89 (04)

[3] Cosmic microwave background anisotropy in the decaying neutrino cosmology [J].

Adams, JA ;

Sarkar, S ;

Sciama, DW .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1998, 301 (01) :210-214

[4] Planck 2015 results XIII. Cosmological parameters [J].

Ade, P. A. R. ;

Aghanim, N. ;

Arnaud, M. ;

Ashdown, M. ;

Aumont, J. ;

Baccigalupi, C. ;

Banday, A. J. ;

Barreiro, R. B. ;

Bartlett, J. G. ;

Bartolo, N. ;

Battaner, E. ;

Battye, R. ;

Benabed, K. ;

Benoit, A. ;

Benoit-Levy, A. ;

Bernard, J. -P. ;

Bersanelli, M. ;

Bielewicz, P. ;

Bock, J. J. ;

Bonaldi, A. ;

Bonavera, L. ;

Bond, J. R. ;

Borrill, J. ;

Bouchet, F. R. ;

Boulanger, F. ;

Bucher, M. ;

Burigana, C. ;

Butler, R. C. ;

Calabrese, E. ;

Cardoso, J. -F. ;

Catalano, A. ;

Challinor, A. ;

Chamballu, A. ;

Chary, R. -R. ;

Chiang, H. C. ;

Chluba, J. ;

Christensen, P. R. ;

Church, S. ;

Clements, D. L. ;

Colombi, S. ;

Colombo, L. P. L. ;

Combet, C. ;

Coulais, A. ;

Crill, B. P. ;

Curto, A. ;

Cuttaia, F. ;

Danese, L. ;

Davies, R. D. ;

Davis, R. J. ;

de Bernardis, P. .

ASTRONOMY & ASTROPHYSICS, 2016, 594

[5] Precision Measurement of the (e+ + e-) Flux in Primary Cosmic Rays from 0.5 GeV to 1 TeV with the Alpha Magnetic Spectrometer on the International Space Station [J].

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. ;

Cervelli, F. ;

Chae, M. J. ;

Chang, Y. H. ;

Chen, A. I. ;

Chen, H. ;

Cheng, G. M. .

PHYSICAL REVIEW LETTERS, 2014, 113 (22)

[6] First Result from the Alpha Magnetic Spectrometer on the International Space Station: Precision Measurement of the Positron Fraction in Primary Cosmic Rays of 0.5-350 GeV [J].

Aguilar, M. ;

Alberti, G. ;

Alpat, B. ;

Alvino, A. ;

Ambrosi, G. ;

Andeen, K. ;

Anderhub, H. ;

Arruda, L. ;

Azzarello, P. ;

Bachlechner, A. ;

Barao, F. ;

Baret, B. ;

Barrau, A. ;

Barrin, L. ;

Bartoloni, A. ;

Basara, L. ;

Basili, A. ;

Batalha, L. ;

Bates, J. ;

Battiston, R. ;

Bazo, J. ;

Becker, R. ;

Becker, U. ;

Behlmann, M. ;

Beischer, B. ;

Berdugo, J. ;

Berges, P. ;

Bertucci, B. ;

Bigongiari, G. ;

Biland, A. ;

Bindi, V. ;

Bizzaglia, S. ;

Boella, G. ;

de Boer, W. ;

Bollweg, K. ;

Bolmont, J. ;

Borgia, B. ;

Borsini, S. ;

Boschini, M. J. ;

Boudoul, G. ;

Bourquin, M. ;

Brun, P. ;

Buenerd, M. ;

Burger, J. ;

Burger, W. ;

Cadoux, F. ;

Cai, X. D. ;

Capell, M. ;

Casadei, D. ;

Casaus, J. .

PHYSICAL REVIEW LETTERS, 2013, 110 (14)

[7] SEARCHING FOR DARK MATTER ANNIHILATION IN RECENTLY DISCOVERED MILKY WAY SATELLITES WITH FERMI-LAT [J].

Albert, A. ;

Anderson, B. ;

Bechtol, K. ;

Drlica-Wagner, A. ;

Meyer, M. ;

Sanchez-Conde, M. ;

Strigari, L. ;

Wood, M. ;

Abbott, T. M. C. ;

Abdalla, F. B. ;

Benoit-Levy, A. ;

Bernstein, G. M. ;

Bernstein, R. A. ;

Bertin, E. ;

Brooks, D. ;

Burke, D. L. ;

Rosell, A. Carnero ;

Kind, M. Carrasco ;

Carretero, J. ;

Crocce, M. ;

Cunha, C. E. ;

D'Andrea, C. B. ;

da Costa, L. N. ;

Desai, S. ;

Diehl, H. T. ;

Dietrich, J. P. ;

Doel, P. ;

Eifler, T. F. ;

Evrard, A. E. ;

Fausti Neto, A. ;

Finley, D. A. ;

Flaugher, B. ;

Fosalba, P. ;

Frieman, J. ;

Gerdes, D. W. ;

Goldstein, D. A. ;

Gruen, D. ;

Gruendl, R. A. ;

Honscheid, K. ;

James, D. J. ;

Kent, S. ;

Kuehn, K. ;

Kuropatkin, N. ;

Lahav, O. ;

Li, T. S. ;

Maia, M. A. G. ;

March, M. ;

Marshall, J. L. ;

Martini, P. ;

Miller, C. J. .

ASTROPHYSICAL JOURNAL, 2017, 834 (02)

[8]

[Anonymous], INT COSM RAY C

[9]

[Anonymous], J COSMOL ASTROPART P

[10]

[Anonymous], ARXIV170202944

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