22nd Conference on Flavor Physics and CP Violation (FPCP 2024)

Session

Parallel - 1

27 May 2024, 14:00

Chulalongkorn University

Conveners

Parallel - 1

• NAKORN THONGYOI (Khon Kaen University)

99. Exploring type-I seesaw under $S_3$ modular symmetry

mitesh behera

27/05/2024, 14:00

Neutrino physics

Parallel session

This work's novelty lies in using the simplest group i.e. ${\mathrm{\Gamma }}_2\cong S_3$ modular symmetry implemented on the canonical seesaw to explain neutrino phenomenology. Here, we construct and classify models based on the doublet and singlet representations of supermultiplets under $S_3$ discrete symmetry along with their respective modular weights, allowing a mass matrix for the neutrino sector...

87. Neutrino masses and mixing in an inverse seesaw (2,3) model augmented with S4 modular flavor symmetry

Raktima Kalita (Cotton University)

27/05/2024, 14:15

Neutrino physics

Parallel session

In our work, we have used modular invariance approach to construct a neutrino mass model in the framework of the inverse seesaw(2,3) mechanism with modular S4 flavor symmetry. The use of modular invariance requires less number of flavon fields which increases the predictability of the model. The phenomenological study of the neutrino mass matrix is carried out using the current 3σ ranges of...

67. Leptogenesis in a Left-Right Symmetric Model with double seesaw

Mr UTKARSH PATEL (Indian Institute of Technology, Bhilai)

27/05/2024, 14:30

Neutrino physics

Parallel session

We explore the connection between low-scale CP-violating Dirac phase $(\delta )$ and high-scale leptogenesis in a Left-Right Symmetric Model (LRSM) with scalar bidoublet and doublets. The fermion sector of the model is extended with one sterile neutrino $(S_L)$ per generation to implement a double seesaw mechanism in the neutral fermion mass matrix. The double seesaw is performed via the...

66. Neutrino magnetic moment and inert doublet dark matter in a radiative seesaw scenario

Rukmani Mohanta

27/05/2024, 14:45

Neutrino physics

Parallel session

We illustrate neutrino mass and magnetic moment along with dark matter phenomenology in a Type-III radiative scenario. The Standard Model is enriched with three vector-like fermion triplets and two inert doublets to provide a suitable platform for the above phenomenological aspects. The inert scalars contribute to total relic density of dark matter in the Universe. Neutrino aspects are...

78. Study on Leptogenesis in texture zeros of minimal inverse seesaw

Nayana Gautam

27/05/2024, 15:00

Neutrino physics

Parallel session

We study maximal texture zeros of the Dirac matrix in a minimal inverse seesaw ISS (2,3) model with $S_4$ flavor symmetry. The seesaw model is extended with the addition of 2 Right Handed neutrinos and 3 sterile states in the intermediate-mass range. To make the model more predictive, we have considered the maximum possible texture zeros in Dirac neutrino mass matrix $M_D$, heavy right-handed...

65. Study of neutrino mass matrices with vanishing trace and one vanishing minor

SANGEETA DEY (COTTON UNIVERSITY, ASSAM, INDIA)

27/05/2024, 15:15

Neutrino physics

Parallel session

In this work we carry out a systematic texture study of the neutrino mass matrix with the ansatzes - (i) one vanishing minor and (ii) the zero sum of the mass eigenvalues with the CP phases (henceforth vanishing trace). There are six possible textures of a neutrino mass matrix with one vanishing minor. The viability of each texture is checked with $3\sigma$ values of current neutrino data by...