Theoretical High Energy Physics

Sudhansu Sekhar Biswal

Room No.

Phone no.

Email-id

He holds the position of Assistant Professor at Department of Physics. He has more than 12 years of teaching and research experience in the field of Theoretical High Energy Physics. He has more than 20 publications to his credit. He completed his Ph.D in 2009 from Centre for High Energy Physics, Indian Institute of Science, Bangalore under the supervision of Prof. Rohini M. Godbole. His thesis work was based on “Probing Higgs boson interactions at future colliders”. His postdoctoral work at Tata Institute of Fundamental Research, Mumbai with Prof. K. Sridhar and Prof. Sreerup Raychaudhuri includes Collider Physics, Non Relativistic Quantum Chromodynamics (NRQCD), anomalous Higgs boson interactions and top quark physics. He worked as an Assistant Professor of Physics at O.U.A.T., Bhubaneswar before joining Ravenshaw University in 2014. His current interest involves study of top quark and Higgs boson properties at the Large Hadron Collider (LHC). In particular, he focuses on the model independent analysis of possible new physics contribution to anomalous top quark and Higgs boson couplings at the present and future colliders. Further he has research interest on study of neutrinos at colliders, Quarkonium production and NRQCD.

Selected Publications

  1. Sudhansu S. Biswal, Rohini M. Godbole, Bruce Mellado and Sreerup Raychaudhuri “Azimuthal Angle Probe of Anomalous HW W Couplings at the LHeC”, Phys. Rev. Lett. 109, 261801(2012).
  2. Sudhansu S. Biswal and P. S. Bhupal Dev, “Probing left-right seesaw models using beam polarization at an e + e – collider,” Phys. Rev. D 95, no. 11, 115031 (2017).
  3. Sudhansu S. Biswal, Saurabh D. Rindani and Pankaj Sharma, “Probing chromomagnetic and chromoelectric couplings of the top quark using its polarization in pair production at hadron colliders,” Phys. Rev. D 88, 074018 (2013).
  4. Sudhansu S. Biswal and K. Sridhar, “eta c production at the Large Hadron Collider,” J. Phys. G 39, 015008 (2012).
  5. Sudhansu S. Biswal and Rohini M. Godbole, “Use of transverse beam polarization to probe anomalous V V H interactions at a Linear Collider,” Phys. Lett. B 680, 81 (2009).
  • Group
  • Research
  • Publications
  • Teachings

Lopamudra Sahoo

Research Scholar

Sushree Simran Mishra

Research Scholar

Susrisangita Patra

Research Scholar

M.Phil.

  1. Sushree Simran Mishra(2020)
  2. Lopamudra Sahoo(2018)
  3. Obeidullah Khan (2017)
  4. Subhrasmita Pradhan (2016)
  5. Millan Rout (2016)
  6. Jyoti Prava Pradhan (2015)

My field of research is Theoretical High Energy Physics. My current interest involves LHC Physics, NRQCD, top quark and Higgs Physics. We have contributed to the Technical Design Report (TDR) of the future ep-collider and the paper is published in Physical Review Letters. Some of our major contributions in the field of collider physics are listed below.

Probe of Anomalous HWW Couplings at a High Energy ep Collider

A high energy ep collider, such as the proposed LHeC, possesses the unique facility of permitting direct measurement of the HWW coupling without contamination from the HZZ coupling. At such a machine, the fusion of two W bosons through the HWW vertex would give rise to typical charged current events accompanied by a Higgs boson. Azimuthal angle correlations between the observable charged current final states could be a sensitive probe of the nature of the HWW vertex and hence of the CP properties of the Higgs boson.

Probing left-right seesaw models using beam polarization

With longitudinal beam polarization option at a future electron-positron collider provides an unambiguous distinction between low-scale type-I seesaw models of neutrino mass. In particular, the pair production cross section of the heavy neutrinos in seesaw models is shown to be enhanced for a suitable choice of the initial beam polarization, and the choice is governed by the size of the light-heavy neutrino mixing parameter. Using this effect, one can also probe a previously uncharted parameter space of the left- right seesaw model, which is complementary to the existing searches at both energy and intensity frontiers.

Eta c production at the Large Hadron Collider

We have studied the production of the eta c at the Large Hadron Collider (LHC) in the framework of non-relativistic quantum chromodynamics (NRQCD) using heavy-quark symmetry. We find that NRQCD predicts a large production cross-section for this resonance at the LHC even after taking into account the small branching ratio of eta c into two photons. We show that it will be possible to test NRQCD through its predictions for eta c at the LHC.

Role of polarisation in probing Higgs boson interactions

A general procedure has been developed to construct observables with specific CP and time reversal transformation properties to probe various anomalous couplings of the Higgs boson to a pair of vector bosons at an e+ e- Linear Collider. Use of transverse beam polarization allows one to have completely independent probes of all the different parts of a general ZZH vertex.

Publications in Journals:

  1. Sudhansu S. Biswal and P. S. Bhupal Dev, “Probing left-right seesaw models using beam polarization at an e + e − collider,” Phys. Rev. D 95, no. 11, 115031 (2017).
  2. Sudhansu S. Biswal, Saurabh D. Rindani and Pankaj Sharma, “Probing chromomagnetic and chromoelectric couplings of the top quark using its polarization in pair production at hadron colliders,” Phys. Rev. D 88, 074018 (2013) .
  3. Sudhansu S. Biswal, Rohini M. Godbole, Bruce Mellado and Sreerup Raychaudhuri “Azimuthal Angle Probe of Anomalous HW W Couplings at the LHeC”, Phys. Rev. Lett. 109, 261801(2012).
  4. Sudhansu S. Biswal, Subhadip Mitra, Rui Santos, Pankaj Sharma, Ritesh K. Singh and Miguel Won, “New physics contributions to the forward−backward asymmetry at the Tevatron”, Phys. Rev. D 86, 014016 (2012).
  5. Sudhansu S. Biswal and K. Sridhar, “eta c production at the Large Hadron Collider,” J. Phys. G 39, 015008 (2012).
  6. Biplob Bhattacherjee, Sudhansu S. Biswal and Diptimoy Ghosh, “Top quark forward-backward asymmetry at Tevatron and its implications at the LHC,” Phys. Rev. D 83, 091501(R) (2011)[Rapid Communications].
  7. K. Ghosh, A. Nyffeler, V. Ravindran, N. Agarwal, P. Agarwal, P. Bandyopadhyay, R. Basu, B. Bhattacherjee, S. S. Biswal and D. Choudhury et al., “Working group report: Physics at the Large Hadron Collider,” Pramana 76, 707 (2011).
  8. Sudhansu S. Biswal and Rohini M. Godbole, “Use of transverse beam polarization to probe anomalous V V H interactions at a Linear Collider,” Phys. Lett. B 680, 81 (2009) .
  9. Sudhansu S. Biswal, Debajyoti Choudhury, Rohini M. Godbole and Mamta, “Role of polarization in probing anomalous gauge interactions of the Higgs boson,” Phys. Rev. D 79, 035012(2009).
  10. Sudhansu S. Biswal, Debajyoti Choudhury, Rohini M. Godbole and Ritesh K. Singh, “Anomalous V V H interactions at a linear collider,” Pramana 69, 777 (2007).
  11. Sudhansu S. Biswal, Debajyoti Choudhury, Rohini M. Godbole and Ritesh K. Singh, “Signatures of anomalous Higgs interactions at a linear collider,” Phys. Rev. D 73, 035001 (2006).
  12. L. Abelleira Fernandez et al. [LHeC Study Group Collaboration], “A Large Hadron Electron Collider at CERN: Report on the Physics and Design Concepts for Machine and Detector,” J. Phys. G 39, 075001 (2012) .
  13. Agostini et. al. [LHeC, FCC-he Study Group], “The Large Hadron-Electron Collider at the HL-LHC” arXiv:2007.14491[hep-ex]; to be published by Journal of Physics G.

LHeC and ILC Collaboration:

  1. L. Abelleira Fernandez et al., “A Large Hadron Electron Collider at CERN,” CERN-LHeC-Note-2012-004-GEN [arXiv:1211.4831 [hep-ex]].
  2. L. Abelleira Fernandez et al. [LHeC Study Group Collaboration], “On the Relation of the LHeC and the LHC,” CERN-LHeC-Note-2012-005-GEN [arXiv:1211.5102 [hep-ex].
  3. Behnke et al. [ILC Collaboration], “ILC Reference Design Report Volume 4 – Detectors,”FERMILAB-DESIGN-2007-02, FERMILAB-PUB-07-793-E [arXiv:0712.2356 [physics.ins-det]].
  4. Djouadi et al. [ILC Collaboration], “International Linear Collider Reference Design Report Volume 2: Physics at the ILC,” SLAC-R-975, FERMILAB-DESIGN-2007-04, FERMILAB-PUB-07-795-E [arXiv:0709.1893 [hep-ph]].
  5. Brau et al. [ILC Collaboration], “ILC Reference Design Report Volume 1 – Executive Summary,” FERMILAB-DESIGN-2007-03, FERMILAB-PUB-07-794-E [arXiv:0712.1950 [physics.acc-ph]].
  6. Phinney et al., “ILC Reference Design Report Volume 3 Accelerator,” CERN Report, ILC Reference Design Report [arXiv:0712.2361 [physics.acc-ph]].

Publications in Proceedings:

  1. Sudhanu S. Biswal, Monalisa Patra, Lopamudra Sahoo and K. Sridhar, “Role of Polarization in probing chiral structure of heavy gauge bosons at an e+e- collider”, to be published by Springer Proceedings in Physics.
  2. Sudhansu S. Biswal, Debajyoti Choudhury and Rohini M. Godbole and Mamta, “Effects of polarisation on study of anomalous VVH interactions at a Linear Collider,” In the Proceedings of 2007 International Linear Collider Workshop (LCWS07 and ILC07), Hamburg, Germany, 30 May – 3 Jun 2007, pp HIG07, eConf C 0705302, HIG07 (2007) [arXiv:0710.2735 [hep-ph]].
  3. Sudhansu S. Biswal, Debajyoti Choudhury, Rohini M. Godbole and Ritesh K. Singh, “Effects of polarisation on study of anomalous ZZH interaction at a Linear Collider,” In the Proceedings of XVII DAE-BRNS HIGH ENERGY PHYSICS SYMPOSIUM, 237–244 (2006).

Paper on Web:

  1. Sudhanu S. Biswal, Monalisa Patra and Sreerup Raychaudhuri, “Anomalous Triple Gauge Vertices at the Large Hadron-Electron Collider,” arXiv:1405.6056 [hep-ph].
  1. Thermal Physics
  2. Electrodynamics
  3. Mathematical Methods
  4. Quantum Mechanics
  5. Particle Physics
  6. Quantum Field Theory
  7. Computational Physics