We gratefully acknowledge
supporting institutions
Full-text links:

Download:

Current browse context:

hep-ph

References & Citations

Bookmark

(what is this?)
CiteULike logo Connotea logo BibSonomy logo Mendeley logo Facebook logo LinkedIn logo del.icio.us logo Digg logo Reddit logo ScienceWISE logo

High Energy Physics - Phenomenology

Title: Dark Matter and Neutrino Masses from Global $U(1)_{B-L}$ Symmetry Breaking

Abstract: We present a scenario where neutrino masses and Dark Matter are related due to a global $U(1)_{B-L}$ symmetry. Specifically we consider neutrino mass generation via the Zee--Babu two-loop mechanism, augmented by a scalar singlet whose VEV breaks the global $U(1)_{B-L}$ symmetry. In order to obtain a Dark Matter candidate we introduce two Standard Model singlet fermions. They form a Dirac particle and are stable because of a remnant $Z_2$ symmetry. Hence, in this model the stability of Dark Matter follows from the global $U(1)_{B-L}$ symmetry. We discuss the Dark Matter phenomenology of the model, and compare it to similar models based on gauged $U(1)_{B-L}$. We argue that in contrast to the gauged versions, the model based on the global symmetry does not suffer from severe constraints from $Z'$ searches.
Comments: minor improvements, matches published version
Subjects: High Energy Physics - Phenomenology (hep-ph)
DOI: 10.1016/j.physletb.2011.10.022
Cite as: arXiv:1105.4626v2 [hep-ph]

Submission history

From: Daniel Schmidt [view email]
[v1] Mon, 23 May 2011 20:18:59 GMT (900kb,D)
[v2] Fri, 21 Oct 2011 08:36:20 GMT (903kb,D)