PT Journal
AU Arbelaez, C
   Gonzalez, M
   Kovalenko, SG
   Hirsch, M
TI QCD-improved limits from neutrinoless double beta decay
SO Physical Review D
JI Phys. Rev. D
PY 2017
BP 015010
EP 12pp
VL 96
IS 1
DI 10.1103/PhysRevD.96.015010
LA English
AB We analyze the impact of QCD corrections on limits derived from neutrinoless double beta decay (0 nu beta beta ). As demonstrated previously, the effect of the color mismatch arising from loops with gluons linking the quarks from different color-singlet currents participating in the effective operators has a dramatic impact on the predictions for some particular Wilson coefficients. Here, we consider all possible contributions from heavy particle exchange, i.e. the so-called short-range mechanism of 0 nu beta beta decay. All high-scale models (HSM) in this class match at some scale around a similar to few TeV with the corresponding effective theory, containing a certain set of effective dimension-9 operators. Many of these HSM receive contributions from more than one of the basic operators and we calculate limits on these models using the latest experimental data. We also show with one nontrivial example, how to derive limits on more complicated models, in which many different Feynman diagrams contribute to 0 nu beta beta decay, using our general method.
ER