Updated search for spectral lines from Galactic dark matter interactions with pass 8 data from the Fermi Large Area Telescope

Ackermann, M.; Ajello, M.; Albert, A.; Anderson, B.; Atwood, W. B.; Baldini, L.; Barbiellini, G.; Bastieri, D.; Bellazzini, R.; Bissaldi, E.; Blandford, R. D.; Bloom, E. D.; Bonino, R.; Bottacini, E.; Brandt, T. J.; Bregeon, J.; Bruel, P.; Buehler, R.; Buson, S.; Caliandro, G. A.; Cameron, R. A.; Caputo, R.; Caragiulo, M.; Caraveo, P. A.; Cecchi, C.; Charles, E.; Chekhtman, A.; Chiang, J.; Chiaro, G.; Ciprini, S.; Claus, R.; Cohen-Tanugi, J.; Conrad, J.; Cuoco, A.; Cutini, S.; D’Ammando, F.; de Angelis, A.; de Palma, F.; Desiante, R.; Digel, S. W.; Di Venere, L.; Drell, P. S.; Drlica-Wagner, A.; Favuzzi, C.; Fegan, S. J.; Franckowiak, A.; Fukazawa, Y.; Funk, S.; Fusco, P.; Gargano, F.; Gasparrini, D.; Giglietto, N.; Giordano, F.; Giroletti, M.; Godfrey, G.; Gomez-Vargas, G. A.; Grenier, I. A.; Grove, J. E.; Guiriec, S.; Gustafsson, M.; Hewitt, J. W.; Hill, A. B.; Horan, D.; Jóhannesson, G.; Johnson, R. P.; Kuss, M.; Larsson, S.; Latronico, L.; Li, J.; Li, L.; Longo, F.; Loparco, F.; Lovellette, M. N.; Lubrano, P.; Malyshev, D.; Mayer, M.; Mazziotta, M. N.; McEnery, J. E.; Michelson, P. F.; Mizuno, T.; Moiseev, A. A.; Monzani, M. E.; Morselli, A.; Murgia, S.; Nuss, E.; Ohsugi, T.; Orienti, M.; Orlando, E.; Ormes, J. F.; Paneque, D.; Pesce-Rollins, M.; Piron, F.; Pivato, G.; Rainò, S.; Rando, R.; Razzano, M.; Reimer, A.; Reposeur, T.; Ritz, S.; Sánchez-Conde, M.; Schulz, A.; Sgrò, C.; Siskind, E. J.; Spada, F.; Spandre, G.; Spinelli, P.; Tajima, H.; Takahashi, H.; Thayer, J. B.; Tibaldo, L.; Torres, D. F.; Tosti, G.; Troja, E.; Vianello, G.; Werner, M.; Winer, B. L.; Wood, K. S.; Wood, M.; Zaharijas, G.; Zimmer, S.

doi:10.1103/PhysRevD.91.122002

Title: Updated search for spectral lines from Galactic dark matter interactions with pass 8 data from the Fermi Large Area Telescope

Journal Article · Mon Jun 15 00:00:00 EDT 2015 · Physical Review. D, Particles, Fields, Gravitation and Cosmology

DOI:https://doi.org/10.1103/PhysRevD.91.122002· OSTI ID:1355155

Ackermann, M.; Ajello, M.; Albert, A.; Anderson, B.; Atwood, W. B.; Baldini, L.; Barbiellini, G.; Bastieri, D.; Bellazzini, R.; Bissaldi, E.; Blandford, R. D.; Bloom, E. D.; Bonino, R.; Bottacini, E.; Brandt, T. J.; Bregeon, J.; Bruel, P.; Buehler, R.; Buson, S.; Caliandro, G. A. more »

Dark matter in the Milky Way may annihilate directly into γ rays, producing a monoenergetic spectral line. Therefore, detecting such a signature would be strong evidence for dark matter annihilation or decay. We search for spectral lines in the Fermi Large Area Telescope observations of the Milky Way halo in the energy range 200 MeV–500 GeV using analysis methods from our most recent line searches. The main improvements relative to previous works are our use of 5.8 years of data reprocessed with the Pass 8 event-level analysis and the additional data resulting from the modified observing strategy designed to increase exposure of the Galactic center region. Furthermore, we search in five sky regions selected to optimize sensitivity to different theoretically motivated dark matter scenarios and find no significant detections. In addition to presenting the results from our search for lines, we also investigate the previously reported tentative detection of a line at 133 GeV using the new Pass 8 data.

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Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE

Contributing Organization:: Fermi-LAT Collaboration

Grant/Contract Number:: AC02-76SF00515; FIRB-2012-RBFR12PM1F; 257861; FERMILAB-PUB-15-673-AE

OSTI ID:: 1355155

Alternate ID(s):: OSTI ID: 1198508

Journal Information:: Physical Review. D, Particles, Fields, Gravitation and Cosmology, Vol. 91, Issue 12; ISSN 1550-7998

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 229 works

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H.E.S.S. limits on line-like dark matter signatures in the 100 GeV to 2 TeV energy range close to the Galactic Centre Collaboration, H. E. S. S.; Abdalla, H.; Abramowski, A. arXiv https://doi.org/10.48550/arxiv.1609.08091	text	January 2016
Scalar Dark Matter: Real vs Complex Wu, Hongyan; Zheng, Sibo arXiv https://doi.org/10.48550/arxiv.1610.06292	text	January 2016
Searching for the 3.5 keV Line in the Deep Fields with Chandra: the 10 Ms observations Cappelluti, Nico; Bulbul, Esra; Foster, Adam arXiv https://doi.org/10.48550/arxiv.1701.07932	text	January 2017
Electroweak baryogenesis from a dark sector Cline, James M.; Kainulainen, Kimmo; Tucker-Smith, David arXiv https://doi.org/10.48550/arxiv.1702.08909	text	January 2017
Prospects for indirect dark matter searches with MeV photons Bartels, Richard; Gaggero, Daniele; Weniger, Christoph arXiv https://doi.org/10.48550/arxiv.1703.02546	text	January 2017
Interpretation of the gamma-ray excess and AMS-02 antiprotons: Velocity dependent dark matter annihilations Jia, Lian-Bao arXiv https://doi.org/10.48550/arxiv.1703.06938	text	January 2017
Point Sources from Dissipative Dark Matter Agrawal, Prateek; Randall, Lisa arXiv https://doi.org/10.48550/arxiv.1706.04195	text	January 2017
Gravity-Mediated Dark Matter Annihilation in the Randall-Sundrum Model Rueter, Thomas D.; Rizzo, Thomas G.; Hewett, JoAnne L. arXiv https://doi.org/10.48550/arxiv.1706.07540	text	January 2017
Dark Matter as a weakly coupled Dark Baryon Mitridate, Andrea; Redi, Michele; Smirnov, Juri arXiv https://doi.org/10.48550/arxiv.1707.05380	text	January 2017
WIMP dark matter candidates and searches - current status and future prospects Roszkowski, Leszek; Sessolo, Enrico Maria; Trojanowski, Sebastian arXiv https://doi.org/10.48550/arxiv.1707.06277	text	January 2017
Top-philic Vector-Like Portal to Scalar Dark Matter Colucci, Stefano; Fuks, Benjamin; Giacchino, Federica arXiv https://doi.org/10.48550/arxiv.1804.05068	text	January 2018
Gamma Lines from the Hidden Sector Perez, Pavel Fileviez; Murgui, Clara arXiv https://doi.org/10.48550/arxiv.1901.10483	text	January 2019
Gamma Ray polarimetry; a new window for the non-thermal Universe Ilie, Cosmin arXiv https://doi.org/10.48550/arxiv.1906.02824	text	January 2019

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