Semi-inclusive wino and higgsino annihilation to LL'

Baumgart, Matthew; Vaidya, Varun

doi:10.1007/JHEP03(2016)213

Title: Semi-inclusive wino and higgsino annihilation to LL'

Journal Article · Thu Mar 31 00:00:00 EDT 2016 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/JHEP03(2016)213· OSTI ID:1327312

Baumgart, Matthew ^[1]; Vaidya, Varun ^[2]

Carnegie Mellon Univ., Pittsburgh, PA (United States); Rutgers Univ., Piscataway, NJ (United States)
Carnegie Mellon Univ., Pittsburgh, PA (United States)

Here, we systematically compute the annihilation rate for winos and higgsinos into the final state relevant for indirect detection experiments, γ + X. The radiative corrections to this process receive enhancement from the large Bloch-Nordsieck-Violating Sudakov logarithm, log(2M$${\chi }$$/M_W). We resum the double logs and include single logs to fixed order using a formalism that combines nonrelativistic and soft-collinear effective field theories. For the wino case, we update an earlier exclusion adapting results of the HESS experiment. At the thermal relic mass of 3 TeV, LL' corrections result in a ~30% reduction in rate relative to LL. But, single logs do not save the wino, and it is still excluded by an order of magnitude. Finally, experimental cuts produce an endpoint region which, our results show, significantly effects the higgsino rate at its thermal-relic mass near 1 TeV and is deserving of further study.

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Research Organization:: Carnegie Mellon Univ., Pittsburgh, PA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: FG02-04ER41338

OSTI ID:: 1327312

Journal Information:: Journal of High Energy Physics (Online), Vol. 2016, Issue 3; ISSN 1029-8479

Publisher:: Springer BerlinCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 20 works

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Resummed photon spectra for WIMP annihilation Baumgart, Matthew; Cohen, Timothy; Moult, Ian Journal of High Energy Physics, Vol. 2018, Issue 3 https://doi.org/10.1007/jhep03(2018)117	journal	March 2018
Zero-range effective field theory for resonant wino dark matter. Part III. Annihilation effects Braaten, Eric; Johnson, Evan; Zhang, Hong Journal of High Energy Physics, Vol. 2018, Issue 5 https://doi.org/10.1007/jhep05(2018)062	journal	May 2018
Constraining heavy dark matter with cosmic-ray antiprotons Cuoco, Alessandro; Heisig, Jan; Korsmeier, Michael Journal of Cosmology and Astroparticle Physics, Vol. 2018, Issue 04 https://doi.org/10.1088/1475-7516/2018/04/004	journal	April 2018
Smallest halos in thermal wino dark matter Ando, Shin’ichiro; Kamada, Ayuki; Sekiguchi, Toyokazu Physical Review D, Vol. 100, Issue 12 https://doi.org/10.1103/physrevd.100.123519	journal	December 2019
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Resummed Photon Spectra for WIMP Annihilation Baumgart, Matthew; Cohen, Timothy; Moult, Ian arXiv https://doi.org/10.48550/arxiv.1712.07656	text	January 2017
2HDM portal for Singlet-Doublet Dark Matter Arcadi, Giorgio arXiv https://doi.org/10.48550/arxiv.1804.04930	text	January 2018

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