@article{ebf03b0dd73448268a61827fbd14fb60,
title = "Constraints on spin-dependent dark matter scattering with long-lived mediators from TeV observations of the Sun with HAWC",
abstract = "We analyze the Sun as a source for the indirect detection of dark matter through a search for gamma rays from the solar disk. Capture of dark matter by elastic interactions with the solar nuclei followed by annihilation to long-lived mediators can produce a detectable gamma-ray flux. We search 3 years of data from the High Altitude Water Cherenkov (HAWC) observatory and find no statistically significant detection of TeV gamma-ray emission from the Sun. Using this, we constrain the spin-dependent elastic scattering cross section of dark matter with protons for dark matter masses above 1 TeV, assuming a sufficiently long-lived mediator. The results complement constraints obtained from Fermi-LAT observations of the Sun and together cover WIMP masses between 4 and 106 GeV. In the optimal scenario, the cross-section constraints for mediator decays to gamma rays can be as strong as ∼10-45 cm2, which is more than 4 orders of magnitude stronger than current direct-detection experiments for a 1 TeV dark matter mass. The cross-section constraints at higher masses are even better, nearly 7 orders of magnitude better than the current direct-detection constraints for a 100 TeV dark matter mass. This demonstration of sensitivity encourages detailed development of theoretical models in light of these powerful new constraints.",
author = "{(HAWC Collaboration)} and A. Albert and R. Alfaro and C. Alvarez and R. Arceo and Arteaga-Vel{\'a}zquez, {J. C.} and {Avila Rojas}, D. and {Ayala Solares}, {H. A.} and E. Belmont-Moreno and Benzvi, {S. Y.} and C. Brisbois and Caballero-Mora, {K. S.} and T. Capistr{\'a}n and A. Carrami{\~n}ana and S. Casanova and M. Castillo and J. Cotzomi and {Couti{\~n}o De Le{\'o}n}, S. and {De Le{\'o}n}, C. and {De La Fuente}, E. and S. Dichiara and Dingus, {B. L.} and Duvernois, {M. A.} and D{\'i}az-V{\'e}lez, {J. C.} and K. Engel and O. Enr{\'i}quez-Rivera and C. Espinoza and H. Fleischhack and N. Fraija and Garc{\'i}a-Gonz{\'a}lez, {J. A.} and F. Garfias and Gonz{\'a}lez, {M. M.} and Goodman, {J. A.} and Z. Hampel-Arias and Harding, {J. P.} and S. Hernandez and B. Hona and F. Hueyotl-Zahuantitla and P. H{\"u}ntemeyer and A. Iriarte and A. Jardin-Blicq and V. Joshi and S. Kaufmann and {Le{\'o}n Vargas}, H. and G. Luis-Raya and J. Lundeen and R. L{\'o}pez-Coto and K. Malone and Marinelli, {S. S.} and M. Mostaf{\'a} and J. Pretz",
note = "Funding Information: We acknowledge the support from the US National Science Foundation (NSF), the US Department of Energy Office of High-Energy Physics; the Laboratory Directed Research and Development (LDRD) program of Los Alamos National Laboratory; Consejo Nacional de Ciencia y Tecnolog{\'i}a (CONACyT), M{\'e}xico [Grants No. 271051, No. 232656, No. 260378, No. 179588, No. 239762, No. 254964, No. 271737, No. 258865, No. 243290, No. 132197, and No. 281653 (C{\'a}tedras 873, 1563, 341)]; Laboratorio Nacional HAWC de Rayos Gamma; the L{\textquoteright}OREAL Fellowship for Women in Science 2014; Red HAWC, M{\'e}xico; DGAPA-UNAM (Grants No. IG100317, No. IN111315, No. IN111716-3, No. IA102715, No. 109916, No. IA102917, and No. IN112218); VIEP-BUAP; PIFI 2012, 2013, PROFOCIE 2014, 2015; the University of Wisconsin Alumni Research Foundation; the Institute of Geophysics, Planetary Physics, and Signatures at Los Alamos National Laboratory; Polish Science Center Grants No. DEC-2014/13/B/ST9/945 and No. DEC-2017/27/B/ST9/02272; Coordinaci{\'o}n de la Investigaci{\'o}n Cient{\'i}fica de la Universidad Michoacana; and Royal Society—Newton Advanced Fellowship 180385. Thanks to Scott Delay, Luciano D{\'i}az, and Eduardo Murrieta for technical support. J. F. B. is supported by (and B. Z. is partially supported by) NSF Grant No. PHY-1714479. R. K. L. is supported by the Office of High Energy Physics of the U.S. Department of Energy under Grants No. DE-SC00012567 and No. DE-SC0013999. K. C. Y. N. is supported by a Croucher Fellowship and Benoziyo Fellowship. T. L., A. H. G. P., and B. Z. are supported in part by NASA Grant No. 80NSSC17K0754. Publisher Copyright: {\textcopyright} 2018 authors. Published by the American Physical Society.",
year = "2018",
month = dec,
day = "15",
doi = "10.1103/PhysRevD.98.123012",
language = "English (US)",
volume = "98",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "12",
}