QCD-improved limits from neutrinoless double beta decay

被引：16

作者：

Arbelaez, C. ^{[1
]}

Gonzalez, M. ^{[1
]}

Kovalenko, S. G. ^{[1
]}

Hirsch, M. ^{[2
]}

机构：

[1] Univ Tecn Federico Santa Maria, Ctr Cient Tecnol Valparaiso, Casilla 110-5, Valparaiso, Chile

[2] Univ Valencia, CSIC, Inst Fis Corpuscular, AHEP Grp, Edificio Inst Paterna,Apartado 22085, E-46071 Valencia, Spain

来源：

PHYSICAL REVIEW D | 2017年 / 96卷 / 01期

关键词：

SUPERFORMULA;

D O I：

10.1103/PhysRevD.96.015010

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页数：12

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