Interference between light and heavy neutrinos for 0νββ decay in the left–right symmetric model

Journal Article · Thu Jun 01 00:00:00 EDT 2017 · Physics Letters B

DOI:https://doi.org/10.1016/j.physletb.2017.03.066· OSTI ID:1405536

Ahmed, Fahim; Neacsu, Andrei; Horoi, Mihai

Neutrinoless double-beta decay is proposed as an important low energy phenomenon that could test beyond the Standard Model physics. There are several potentially competing beyond the Standard Model mechanisms that can induce the process. It thus becomes important to disentangle the different processes. In the present study we consider the interference effect between the light left-handed and heavy right-handed Majorana neutrino exchange mechanisms. The decay rate, and consequently, the phase-space factors for the interference term are derived, based on the left–right symmetric model. The numerical values for the interference phase-space factors for several nuclides are calculated, taking into consideration the relativistic Coulomb distortion of the electron wave function and finite-size of the nucleus. As a result, the variation of the interference effect with the Q-value of the process is studied.

• Research Organization: Central Michigan Univ., Mount Pleasant, MI (United States); University of North Carolina, Chapel Hill, NC (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• Grant/Contract Number: SC0008529; SC0015376
• OSTI ID: 1405536
• Alternate ID(s): OSTI ID: 1374602
• Journal Information: Physics Letters B, Journal Name: Physics Letters B Vol. 769 Journal Issue: C; ISSN 0370-2693
• Publisher: Elsevier
• Country of Publication: Netherlands
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS