Sommerfeld enhancement from unparticle exchange for dark matter annihilation

Chuan Hung Chen, C. S. Kim

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6 Citations (Scopus)


We investigate the implication of unparticle exchange for the possible Sommerfeld enhancement in dark matter annihilation process. Assuming the unparticle exchange during WIMP collision, we solve the Schrödinger equation for the effective potential, and find that the Sommerfeld enhancement factor is dictated by the scale dimension of unparticle as 1 / v3 - 2 dU. Numerically the Sommerfeld enhancement could be O (10 - 103).

Original languageEnglish
Pages (from-to)232-235
Number of pages4
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number2-3
Publication statusPublished - 2010 Apr 12

Bibliographical note

Funding Information:
This work for C.H.C. is supported by the National Science Council of R.O.C. under Grant No: NSC-97-2112-M-006-001-MY3 . The work of C.S.K. is supported in part by Basic Science Research Program through the NRF of Korea funded by MOEST ( 2009-0088395 ), in part by KOSEF through the Joint Research Program ( F01-2009-000-10031-0 ), and in part by WPI Initiative, MEXT , Japan.

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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