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Title: Soft collinear effective theory for heavy WIMP annihilation

Journal Article · · Journal of High Energy Physics (Online)
 [1];  [2];  [3];  [4]
  1. Univ. of Chicago, Chicago, IL (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  2. Princeton Univ., Princeton, NJ (United States); Institute for Advanced Study, Princeton, NJ (United States); Univ. of Oregon, Eugene, OR (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. Univ. of Chicago, Chicago, IL (United States)
  4. Univ. of Chicago, Chicago, IL (United States); Univ. of California, Berkeley, CA (United States)

In a large class of models for Weakly Interacting Massive Particles (WIMPs), the WIMP mass M lies far above the weak scale mW . This work identifies universal Sudakov-type logarithms ~ α log2(2 M/mW) that spoil the naive convergence of perturbation theory for annihilation processes. An effective field theory (EFT) framework is presented, allowing the systematic resummation of these logarithms. Another impact of the large separation of scales is that a long-distance wavefunction distortion from electroweak boson exchange leads to observable modifications of the cross section. Careful accounting of momentum regions in the EFT allows the rigorous disentanglement of this so-called Sommerfeld enhancement from the short-distance hard annihilation process. In addition, the WIMP is described as a heavy-particle field, while the electroweak gauge bosons are treated as soft and collinear fields. Hard matching coefficients are computed at renormalization scale μ ~ 2 M , then evolved down to μ ~ mW , where electroweak symmetry breaking is incorporated and the matching onto the relevant quantum mechanical Hamiltonian is performed. The example of an SU(2)W triplet scalar dark matter candidate annihilating to line photons is used for concreteness, allowing the numerical exploration of the impact of next-to-leading order corrections and log resummation. As a result, for M ≃ 3 TeV, the resummed Sommerfeld enhanced cross section is reduced by a factor of ~ 3 with respect to the treelevel fixed order result.

Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
AC02-07CH11359
OSTI ID:
1226293
Report Number(s):
FERMILAB-PUB-14-359-T; EFI-14-32; SLAC-PUB-16094; arXiv eprint number arXiv:1409.7392; TRN: US1500550
Journal Information:
Journal of High Energy Physics (Online), Vol. 2015, Issue 1; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 44 works
Citation information provided by
Web of Science

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Cited By (12)

Electroweak Logarithms in Inclusive Cross Sections text January 2018
Resummed Photon Spectra for WIMP Annihilation text January 2017
Towards the Final Word on Neutralino Dark Matter text January 2015
Non-relativistic pair annihilation of nearly mass degenerate neutralinos and charginos III. Computation of the Sommerfeld enhancements journal May 2015
2HDM portal for singlet-doublet dark matter journal October 2018
Constraining heavy dark matter with cosmic-ray antiprotons journal April 2018
Soft-collinear supersymmetry journal March 2017
Resummed photon spectra for WIMP annihilation journal March 2018
Zero-range effective field theory for resonant wino dark matter. Part III. Annihilation effects journal May 2018
Non-relativistic pair annihilation of nearly mass degenerate neutralinos and charginos III. Computation of the Sommerfeld enhancements text January 2015
Testing dark matter with Cherenkov light — prospects of H.E.S.S. and CTA for exploring minimal supersymmetry journal October 2019
2HDM portal for Singlet-Doublet Dark Matter text January 2018

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