English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/131057
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

QCD running in neutrinoless double beta decay: Short-range mechanisms

AuthorsGonzález, Marcela; Hirsch, Martin ; Kovalenko, S. G.
Issue Date21-Jan-2016
PublisherAmerican Physical Society
CitationPhysical Review - Section D - Particles and Fields 93 (1): 013017 - 11 (2016)
AbstractThe decay rate of neutrinoless double beta (0 nu beta beta) decay contains terms from heavy particle exchange, which lead to dimension-9 (d = 9) six fermion operators at low energies. Limits on the coefficients of these operators have been derived previously neglecting the running of the operators between the high scale, where they are generated, and the energy scale of 0 nu beta beta decay, where they are measured. Here we calculate the leading-order QCD corrections to all possible d = 9 operators contributing to the 0 nu beta beta amplitude and use renormalization group running to calculate 1-loop improved limits. Numerically, QCD running dramatically changes some limits by factors of the order of or larger than typical uncertainties in nuclear matrix element calculations. For some specific cases, operator mixing in the running changes limits even by up to 3 orders of magnitude. Our results can be straightforwardly combined with new experimental limits or improved nuclear matrix element calculations to rederive updated limits on all short-range contributions to 0 nu beta beta decay.
Description16 pages.- 3 figures.- 2 tables
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevD.93.013017
Appears in Collections:(IFIC) Artículos
Files in This Item:
File Description SizeFormat 
FPA2014-58183-P-QCD running.pdf364,29 kBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.