Semi-inclusive wino and higgsino annihilation to LL'
Abstract
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$${\chi }$$/MW). 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.
- Authors:
-
- Carnegie Mellon Univ., Pittsburgh, PA (United States); Rutgers Univ., Piscataway, NJ (United States)
- Carnegie Mellon Univ., Pittsburgh, PA (United States)
- Publication Date:
- Research Org.:
- Carnegie Mellon Univ., Pittsburgh, PA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1327312
- Grant/Contract Number:
- FG02-04ER41338
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of High Energy Physics (Online)
- Additional Journal Information:
- Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2016; Journal Issue: 3; Journal ID: ISSN 1029-8479
- Publisher:
- Springer Berlin
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; NLO Computations; Supersymmetry Phenomenology
Citation Formats
Baumgart, Matthew, and Vaidya, Varun. Semi-inclusive wino and higgsino annihilation to LL'. United States: N. p., 2016.
Web. doi:10.1007/JHEP03(2016)213.
Baumgart, Matthew, & Vaidya, Varun. Semi-inclusive wino and higgsino annihilation to LL'. United States. https://doi.org/10.1007/JHEP03(2016)213
Baumgart, Matthew, and Vaidya, Varun. Thu .
"Semi-inclusive wino and higgsino annihilation to LL'". United States. https://doi.org/10.1007/JHEP03(2016)213. https://www.osti.gov/servlets/purl/1327312.
@article{osti_1327312,
title = {Semi-inclusive wino and higgsino annihilation to LL'},
author = {Baumgart, Matthew and Vaidya, Varun},
abstractNote = {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${\chi }$/MW). 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.},
doi = {10.1007/JHEP03(2016)213},
journal = {Journal of High Energy Physics (Online)},
number = 3,
volume = 2016,
place = {United States},
year = {Thu Mar 31 00:00:00 EDT 2016},
month = {Thu Mar 31 00:00:00 EDT 2016}
}
Web of Science
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