https://doi.org/10.1140/epjc/s10052-012-2023-0
Regular Article - Theoretical Physics
Linear collider test of a neutrinoless double beta decay mechanism in left–right symmetric theories
1
Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117, Heidelberg, Germany
2
AHEP Group, Institut de Física Corpuscular—C.S.I.C./Universitat de València, Edificio Institutos de Paterna, Apt 22085, 46071, Valencia, Spain
* e-mail: werner.rodejohann@mpi-hd.mpg.de
Received:
20
March
2012
Revised:
8
May
2012
Published online:
31
May
2012
There are various diagrams leading to neutrinoless double beta decay in left–right symmetric theories based on the gauge group SU(2)
L
×SU(2)
R
. All can in principle be tested at a linear collider running in electron–electron mode. We argue that the so-called λ-diagram is the most promising one. Taking the current limit on this diagram from double beta decay experiments, we evaluate the relevant cross section 
, where 
is the Standard Model W-boson and 
the one from SU(2)
R
. It is observable if the life-time of double beta decay and the mass of the W
R
are close to current limits. Beam polarization effects and the high-energy behaviour of the cross section are also analyzed.
© Springer-Verlag / Società Italiana di Fisica, 2012
