Sabyasachi Chakraborty

Ph.D. IACS, Kolkata, 2016

Assistant Professor, Department of Physics

Research Interest



  • PhD, IACS, Kolkata, 2016
  • Masters of Science in Physics, IITM, 2010
  • Bachelor of Science in Physics, Presidency College, Kolkata, 2008



  • Assistant Professor (Aug. 2022 – onwards) Department of Physics, Indian Institute of Technology, Kanpur, India.

  • Postdoctoral Fellow (Oct. 2021 – Jun. 2022) Department of Theoretical Particle Physics, International School for Advanced Studies (SISSA), Trieste, Italy,

  • Postdoctoral Fellow (Oct. 2018 – Aug. 2021) Department of High Energy Physics, Florida State University, Tallahassee, USA,

  • Postdoctoral Fellow (Oct. 2015 – Aug. 2018) Department of Theoretical Physics, Tata Institute of Fundamental Research, Mumbai, India.


  • Ultra-relativistic bubbles from the simplest Higgs portal and their cosmological consequences
    Aleksandr Azatov, Giulio Barni, Sabyasachi Chakraborty, Miguel Vanclasselaer, Wen Yin Submitted in JHEP [arXiv:2207.02230 [hep-ph]].

  • Heavy QCD Axion in b → s Transition: Enhanced Limits and Projections
    Sabyasachi Chakraborty, Manfred Kraus, Vaja Loladze, Takemichi Okui and Kohsaku Tobioka, Phys. Rev. D, 104 (2021) 5, 055036 [arXiv:2102.04474 [hep-ph]].

  • Topics in soft collinear effective theory for gravity: The diffeomorphism invariant Wilson lines and reparametrization invariance
    Sabyasachi Chakraborty, Takemichi Okui and Arash Yunesi, Phys. Rev. D 101 (2020) 6, 066019 [arXiv:1910.10738 [hep-th]].

  • Charting generalized supersoft supersymmetry
    Sabyasachi Chakraborty, Adam Martin and Tuhin S Roy, JHEP 1805 (2018) 176 [arXiv:1802.03411 [hep-ph]].

  • Chasing new physics in stacks of soft tracks
    Amit Chakraborty, Sabyasachi Chakraborty and Tuhin S. Roy, Phys. Rev. D (Rapid) 94 (2016) 11, 111703 [arXiv:1606.07826 [hep-ph]].

  • Higgs boson mass, neutrino masses and mixing and keV dark matter in an U (1) R -lepton number model
    Sabyasachi Chakraborty and Sourov Roy, JHEP 1401 (2014) 101, [arXiv:1309.6538 [hep-ph]].


  • High Energy Physics


  • Council of Scientific and Industrial Research (CSIR)

  • CERN Summer School 2013
    Participated in CERN-Fermilab Hadron Collider Physics Summer School, Geneva, Switzerland.

  • DST Travel Grant 2012
    Participated in PSI Zuoz summer school, PSI, Switzerland.

  • DST Travel Grant 2012
    Participated in the First Asia Europe Pacific School on High Energy Physics, Fukuoka, Japan.

  • Silver Medalist
    Indian Institute of Technology, Madras, India, 2009.

  • Joint Admission to M.Sc (JAM)
    Entrance for Masters degree, conducted by IITs and IISC, 2008.



107, Block C, Old Sac building,
Department of Physics,
IIT Kanpur,
Kanpur 208016

Office Phone: 0512-259-2349

Email: sabyac(at)

Axions/Dark Photons, Applications of effective field theory, Collider Physics


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