P. S. Bhupal Dev

Washington University in St. Louis

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Rabindra N. Mohapatra

University of Maryland, College Park

Yongchao Zhang

Southeast University

Apostolos Pilaftsis

University of Manchester

K. S. Babu

Oklahoma State University

Stefan Antusch

University of Basel

Zhen Liu

Institute of High Energy Physics

Garv Chauhan

Virginia Tech

Tao Han

University of Pittsburgh

Bhaskar Dutta

Texas A&M University

Kuver Sinha

University of Oklahoma

Cooperative Institutions

European Organization for Nuclear Research

1,015

Chinese Academy of Sciences

774

Institute of High Energy Physics

667

A. Alikhanyan National Laboratory

390

Centre National de la Recherche Scientifique

369

University of Chinese Academy of Sciences

369

University of Adelaide

320

Fermi National Accelerator Laboratory

237

Institute of High Energy Physics

229

Institut National de Physique Nucléaire et de Physique des Particules

212

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Probing the scale of new physics by Advanced LIGO/VIRGO

Physical review. D/Physical review. D. (2016)

P. S. Bhupal Dev Anupam Mazumdar

We show that if the new physics beyond the standard model is associated with a first-order phase transition around ${10}^{7}--{10}^{8}\text{ }\text{ }\mathrm{GeV}$, the energy density stored in the resulting stochastic gravitational waves and the corresponding peak frequency are within the projected final sensitivity of the advanced LIGO/VIRGO detectors. We discuss some possible new physics scenarios that could arise at such energies, and in particular, the consequences for Peccei-Quinn and supersymmetry breaking scales.

10.1103/physrevd.93.104001

Cite

Citations (112)

Predictive Dirac and Majorana neutrino mass textures from SU(6) grand unified theories

Physical review. D/Physical review. D. (2020)

Zackaria Chacko P. S. Bhupal Dev Rabindra N. Mohapatra Anil Thapa

We present simple and predictive realizations of neutrino masses in theories based on the $SU(6)$ grand unifying group. At the level of the lowest-dimension operators, this class of models predicts a skew-symmetric flavor structure for the Dirac mass term of the neutrinos. In the case that neutrinos are Dirac particles, the lowest-order prediction of this construction is then one massless neutrino and two degenerate massive neutrinos. Higher-dimensional operators suppressed by the Planck scale perturb this spectrum, allowing a good fit to the observed neutrino mass matrix. A firm prediction of this construction is an inverted neutrino mass spectrum with the lightest neutrino hierarchically lighter than the other two, so that the sum of neutrino masses lies close to the lower bound for an inverted hierarchy. In the alternate case that neutrinos are Majorana particles, the mass spectrum can be either normal or inverted. However, the lightest neutrino is once again hierarchically lighter than the other two, so that the sum of neutrino masses is predicted to lie close to the corresponding lower bound for the normal or inverted hierarchy. Near future cosmological measurements will be able to test the predictions of this scenario for the sum of neutrino masses. In the case of Majorana neutrinos that exhibit an inverted hierarchy, future neutrinoless double beta experiments can provide a complementary probe.

Massless particle

10.1103/physrevd.102.035020

Cite

Citations (6)

HE-LHC: The High-Energy Large Hadron Collider

The European Physical Journal Special Topics (2019)

A. Abada M. Abbrescia Shehu AbdusSalam I. M. Abdyukhanov J. Abelleira Fernandez

In response to the 2013 Update of the European Strategy for Particle Physics (EPPSU), the Future Circular Collider (FCC) study was launched as a world-wide international collaboration hosted by CERN. The FCC study covered an energy-frontier hadron collider (FCC-hh), a highest-luminosity high-energy lepton collider (FCC-ee), the corresponding 100 km tunnel infrastructure, as well as the physics opportunities of these two colliders, and a high-energy LHC, based on FCC-hh technology. This document constitutes the third volume of the FCC Conceptual Design Report, devoted to the hadron collider FCC-hh. It summarizes the FCC-hh physics discovery opportunities, presents the FCC-hh accelerator design, performance reach, and staged operation plan, discusses the underlying technologies, the civil engineering and technical infrastructure, and also sketches a possible implementation. Combining ingredients from the Large Hadron Collider (LHC), the high-luminosity LHC upgrade and adding novel technologies and approaches, the FCC-hh design aims at significantly extending the energy frontier to 100 TeV. Its unprecedented centre-of-mass collision energy will make the FCC-hh a unique instrument to explore physics beyond the Standard Model, offering great direct sensitivity to new physics and discoveries.

Upgrade

10.1140/epjst/e2019-900088-6

Cite

Citations (167)

Natural Alignment in the Two Higgs Doublet Model

Journal of Physics Conference Series (2017)

P. S. Bhupal Dev Apostolos Pilaftsis

As the LHC Higgs data persistently suggest the couplings of the observed 125 GeV Higgs boson to be consistent with the Standard Model (SM) expectations, any extended Higgs sector must lead to the so-called SM alignment limit, where one of the Higgs bosons behaves exactly like that of the SM. In the context of the Two Higgs Doublet Model (2HDM), this alignment is often associated with either decoupling of the heavy Higgs sector or accidental cancellations in the 2HDM potential. We present a novel symmetry justification for 'natural' alignment without necessarily decoupling or fine-tuning. We show that there exist only three different symmetry realizations of the natural alignment scenario in 2HDM. We identify the 2HDM parameter space satisfying the natural alignment condition up to the Planck scale. We also analyze new collider signals for the heavy Higgs sector in the natural alignment limit, which dominantly lead to third-generation quarks in the final state and can serve as a useful observational tool during the Run-II phase of the LHC.

Higgs sector

Decoupling (probability)

Two-Higgs-doublet model

10.1088/1742-6596/873/1/012008

Cite

Citations (5)

Searching for Heavy Leptophilic $Z'$: from Lepton Colliders to Gravitational Waves

arXiv (Cornell University) (2023)

Arnab Dasgupta P. S. Bhupal Dev Tao Han Rojalin Padhan Si Wang

We study the phenomenology of leptophilic $Z'$ gauge bosons at the future high-energy $e^+e^-$ and $\mu^+\mu^-$ colliders, as well as at the gravitational wave observatories. The leptophilic $Z'$ model, although well-motivated, remains largely unconstrained from current low-energy and collider searches for $Z'$ masses above ${\cal O}(100~{\rm GeV})$, thus providing a unique opportunity for future lepton colliders. Taking $U(1)_{L_\alpha-L_\beta}~(\alpha,\beta=e,\mu,\tau)$ models as concrete examples, we show that future $e^+e^-$ and $\mu^+\mu^-$ colliders with multi-TeV center-of-mass energies provide unprecedented sensitivity to heavy leptophilic $Z'$ bosons. Moreover, if these $U(1)$ models are classically scale-invariant, the phase transition at the $U(1)$ symmetry-breaking scale tends to be strongly first-order with ultra-supercooling, and leads to observable stochastic gravitational wave signatures. We find that the future sensitivity of gravitational wave observatories, such as advanced LIGO-VIRGO and Cosmic Explorer, can be complementary to the collider experiments, probing higher $Z'$ masses up to ${\cal O}(10^4~{\rm TeV})$, while being consistent with naturalness and perturbativity considerations.

10.48550/arxiv.2308.12804

Cite

Citations (0)

A New Probe of Relic Neutrino Clustering using Cosmogenic Neutrinos

arXiv (Cornell University) (2022)

Vedran Brdar P. S. Bhupal Dev Ryan Plestid Amarjit Soni

We propose a new probe of cosmic relic neutrinos (C$\nu$B) using their resonant scattering against cosmogenic neutrinos. Depending on the lightest neutrino mass and the energy spectrum of the cosmogenic neutrino flux, a Standard Model vector meson (such as a hadronic $\rho$) resonance can be produced via $\nu\bar{\nu}$ annihilation. This leads to a distinct absorption feature in the cosmogenic neutrino flux at an energy solely determined by the meson mass and the neutrino mass, apart from redshift. By numerical coincidence, the position of the $\rho$-resonance overlaps with the originally predicted peak of the Greisen-Zatsepin-Kuzmin (GZK) neutrino flux, which offers an enhanced absorption effect at higher redshifts. We show that this absorption feature in the GZK neutrino flux may be observable in future radio-based neutrino observatories, such as IceCube-Gen2 radio, provided there exists a large overdensity in the C$\nu$B distribution. This therefore provides a new probe of C$\nu$B clustering at large redshifts, complementary to the laboratory probes (such as KATRIN) at zero redshift.

Annihilation

Source

Cite

Citations (0)

Leptophilic dark matter at linear colliders

The Sixteenth Marcel Grossmann Meeting (2023)

P. S. Bhupal Dev

We discuss model-independent collider constraints on the effective couplings of leptophilic dark matter (LDM), considering its production at a future electron-positron linear collider, with both polarized and unpolarized beam options, in the mono-photon and mono-Z channels.We show that the future collider constraints are largely complementary to the direct and indirect detection limits on LDM, and can potentially provide the best-ever LDM sensitivity in the low-mass regime (below ∼ 10 GeV).

10.1142/9789811269776_0178

Cite

Citations (1)

Probing freeze-in dark matter via heavy neutrino portal

Physical review. D/Physical review. D. (2023)

Basabendu Barman P. S. Bhupal Dev Anish Ghoshal

We explore the possibility of probing freeze-in dark matter (DM) produced via the right-handed neutrino (RHN) portal using the RHN search experiments. We focus on a simplified framework of minimally-extended type-I seesaw model consisting of only four free parameters, namely the RHN mass, the fermionic DM mass, the Yukawa coupling between the DM and the RHN, and a real singlet scalar mass. We consider two cases for the DM production either via decay of the thermal RHN or via scattering of the bath particles mediated by the RHN. In both cases, we show that for sub-TeV scale DM masses, the allowed model parameter space satisfying the observed DM relic density for freeze-in scenario falls within the reach of current and future collider, beam dump and forward physics facilities looking for feebly coupled heavy neutrinos.

Yukawa potential

10.1103/physrevd.108.035037

Cite

Citations (13)

Probing TeV scale origin of neutrino mass at lepton colliders

arXiv (Cornell University) (2018)

P. S. Bhupal Dev Rabindra N. Mohapatra Yongchao Zhang

We point out how future lepton colliders can provide unique insight into the scalar sector of TeV scale models for neutrino masses with local $B-L$ symmetry. Our specific focus is on the minimal TeV scale left-right model, which naturally embeds this $B-L$ symmetry. In particular, we make a detailed study of the lepton collider implications of the neutral ($H_3$) and doubly-charged ($H^{\pm\pm}$) scalars from the right-handed triplet Higgs that is responsible for the spontaneous breaking of the $B-L$ symmetry and implementing the seesaw mechanism. Due to mixing with other scalars, the neutral scalar $H_3$ could acquire sizable flavor violating couplings to the charged leptons. Produced on-shell or off-shell at the planned $e^+e^-$ colliders, it would induce distinct lepton flavor violating signals like $e^+e^- \to \mu^\pm \tau^\mp ~ (+H_3)$, with the couplings probed up to $\sim 10^{-4}$ for a wide range of neutral scalar mass, which is well beyond the reach of current searches for charged lepton flavor violation. The Yukawa couplings of the doubly-charged scalar $H^{\pm\pm}$ to the charged leptons might also be flavor-violating, which is correlated to the heavy right-handed neutrino masses and mixings. With a combination of the pair, single and off-shell production of $H^{\pm\pm}$ like $e^+e^- \to H^{++} H^{--},\, H^{\pm\pm} e^\mp \mu^\mp,\, \mu^\pm \tau^\mp$, the Yukawa couplings can be probed up to $10^{-3}$ at future lepton colliders, which is allowed by current lepton flavor data in a large region of parameter space. For both the neutral and doubly-charged cases, the scalar masses could be probed up to the few-TeV range in the off-shell channel.

Yukawa potential

Seesaw mechanism

Lepton number

Source

Cite

Citations (2)

Long-lived Light Scalars at the LHC

Acta Physica Polonica B (2017)

P. S. Bhupal Dev R. N. Mohapatra Y. Zhang

10.5506/aphyspolb.48.969

Cite

Citations (2)