skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Constraints on dark matter annihilation to fermions and a photon

Abstract

Here, we consider Majorana dark matter annihilation to fermion-anti-fermion pair and a photon in the effective field theory paradigm, by introducing dimension 6 and dimension 8 operators in the Lagrangian. For a given value of the cut-off scale, the latter dominates the annihilation process for heavier dark matter masses. We find a cancellation in the dark matter annihilation to a fermion-anti-fermion pair when considering the interference of the dimension 6 and the dimension 8 operators. Constraints on the effective scale cut-off is derived while considering indirect detection experiments and the relic density requirements and they are compared to the bound coming from collider experiments.

Authors:
 [1];  [2]; ORCiD logo [3]
  1. Istituto Nazionale di Fisica Nucleare, Roma (Italy); Ecole Polytechnique, Palaiseau (France); Univ. Paris-Sud, Orsay Cedex (France)
  2. INFN-Sezione di Napoli, Napoli (Italia)
  3. Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); Johannes Gutenberg Univ., Mainz (Germany)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1458520
Grant/Contract Number:
AC02-76SF00515
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2018; Journal Issue: 5; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Beyond Standard Model; Cosmology of Theories beyond the SM

Citation Formats

Chowdhury, Debtosh, Iyer, Abhishek M., and Laha, Ranjan. Constraints on dark matter annihilation to fermions and a photon. United States: N. p., 2018. Web. doi:10.1007/jhep05(2018)152.
Chowdhury, Debtosh, Iyer, Abhishek M., & Laha, Ranjan. Constraints on dark matter annihilation to fermions and a photon. United States. doi:10.1007/jhep05(2018)152.
Chowdhury, Debtosh, Iyer, Abhishek M., and Laha, Ranjan. Thu . "Constraints on dark matter annihilation to fermions and a photon". United States. doi:10.1007/jhep05(2018)152. https://www.osti.gov/servlets/purl/1458520.
@article{osti_1458520,
title = {Constraints on dark matter annihilation to fermions and a photon},
author = {Chowdhury, Debtosh and Iyer, Abhishek M. and Laha, Ranjan},
abstractNote = {Here, we consider Majorana dark matter annihilation to fermion-anti-fermion pair and a photon in the effective field theory paradigm, by introducing dimension 6 and dimension 8 operators in the Lagrangian. For a given value of the cut-off scale, the latter dominates the annihilation process for heavier dark matter masses. We find a cancellation in the dark matter annihilation to a fermion-anti-fermion pair when considering the interference of the dimension 6 and the dimension 8 operators. Constraints on the effective scale cut-off is derived while considering indirect detection experiments and the relic density requirements and they are compared to the bound coming from collider experiments.},
doi = {10.1007/jhep05(2018)152},
journal = {Journal of High Energy Physics (Online)},
number = 5,
volume = 2018,
place = {United States},
year = {Thu May 24 00:00:00 EDT 2018},
month = {Thu May 24 00:00:00 EDT 2018}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Save / Share: