Fermion masses in supersymmetric SO(10) with type II seesaw mechanism: A nonminimal predictive scenario

Journal Article · Mon Nov 01 04:00:00 EST 2004 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.70.095002· OSTI ID:20705649

Bertolini, Stefano; Malinsky, Michal ^[1]; INFN, Sezione di Trieste ^[2]; Frigerio, Michele ^[3]

---

1. Scuola Internazionale Superiore di Studi Avanzati, via Beirut 4, I-34014 Trieste (Italy)
2. Italy
3. Department of Physics, University of California, Riverside, California 92521 (United States)

A predictive framework for fermion masses and mixing is given by the supersymmetric SO(10) model with one 10{sub H}, one 126-bar{sub H}, one 126{sub H}, and one 210{sub H} Higgs representations, and type-II seesaw dominating the neutrino mass matrix. We investigate the origin of the tension between this model and lepton mixing data and refine previous numerical analyses. We discuss an extension of the minimal model that includes one 120{sub H} chiral superfield representation. This exhausts the possible renormalizable contributions to the Yukawa sector. In spite of the increase in the number of parameters the predictivity of the minimal setting is not spoiled. We argue that the contributions to fermion masses due to the doublet components of 120{sub H} can be naturally small compared to those of 10{sub H} and 126{sub H}-bar, thus acting as a perturbation in the fermion mass generation. The antisymmetric nature of the 120{sub H} Yukawa coupling affects at leading order the determination of the mixing angles and it allows to remove the inconsistencies between predictions and data on the neutrino parameters. An improvement in the experimental bound on U{sub e3} can tell this scenario from the minimal model.

• OSTI ID: 20705649
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 9 Vol. 70; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AXIOMATIC FIELD THEORY
CHIRAL SYMMETRY
CHIRALITY
DISTURBANCES
HIGGS BOSONS
HIGGS MODEL
MIXING
NEUTRINO OSCILLATION
NEUTRINOS
NUMERICAL ANALYSIS
PERTURBATION THEORY
RENORMALIZATION
REST MASS
SO-10 GROUPS
SUPERSYMMETRY
WEINBERG ANGLE
WEINBERG-SALAM GAUGE MODEL
YUKAWA POTENTIAL