Neutrino Oscillation and CPT Violation: A Four Flavour Matter Effects

Authors

  • Bipin Singh Koranga Department of Physics, Kirori Mal College (University of Delhi), Delhi-110007, India
  • Seema Rawat Department of Physics, Zakir Husain College (University of Delhi), Delhi-110007, India

DOI:

https://doi.org/10.13052/jgeu0975-1416.13210

Keywords:

CPT violation, neutrino oscillation

Abstract

In a matter for the four flavour neutrino oscillation (3+1) scheme, the CPT violation is taken into consideration. Assuming that the mismatch between neutrino and anti-neutrino mass square discrepancies causes the CPT to be violated in matter. We suppose that the presence of matter causes the four flavour neutrino and anti-neutrino mass differences to square. For four flavour neutrino oscillation, we take into account the pertinent matter density profile. In this study, we calculate the upper bound constraint of the CPT violation in matter for a four flavour scheme. |Δm/21−Δm/21|=(1.21−3.44)×10−3)eV2,|Δm/31−Δm/31|=(1.68−6.41)×10−4)eV2 and |Δm/41−Δm/41|=(1.06−4.60)×10−5)eV2

In this paper, we examine the CPT violation in a framework with four flavours in matter.

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Author Biographies

Bipin Singh Koranga, Department of Physics, Kirori Mal College (University of Delhi), Delhi-110007, India

Bipin Singh Koranga is a Professor in the Department of Physics, Kirorimal College, University of Delhi. He joined the Theoretical Physics Group at the Indian Institute of Technology Bombay in 2006 and earned his Ph.D Physics (Neutrino Masses and Mixings) in 2007. For over 17 years, he has been teaching graduate-level courses in foundational physics and mathematical physics. His research interests include: the origin of the universe, physics beyond the Standard Model, theoretical nuclear physics, quantum mechanical neutrino oscillations, selected topics in astrophysics. He has published more than 65 research papers in reputed international journals. His current research focuses on neutrino mass models and their phenomenological implications.

Seema Rawat, Department of Physics, Zakir Husain College (University of Delhi), Delhi-110007, India

Seema Rawat is a Professor of Physics at Zakir Husain College, University of Delhi, where she teaches Quantum Mechanics and Theoretical Physics to undergraduate students. She received both her Master’s degree and Ph.D. in Physics from Kumaun University, Nainital. She has published more than 30 research papers in reputed international journals. Her current research focuses on high-energy particle physics.

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Published

2025-10-09

How to Cite

Koranga, B. S., & Rawat, S. (2025). Neutrino Oscillation and CPT Violation: A Four Flavour Matter Effects. Journal of Graphic Era University, 13(02), 481–492. https://doi.org/10.13052/jgeu0975-1416.13210

Issue

2025: Vol 13 Iss 2

Section

Articles