Conveners
WG2-Beyond the Standard Model: D1 - S2 - Parallel - 5
- Sushil Chauhan (Panjab University (IN))
- Pradipta Ghosh (Department of Physics, Indian Institute of Technology Delhi)
- Bhawna Gomber (University of Hyderabad, India)
- Santosh Rai (Harish-Chandra Research Institute)
WG2-Beyond the Standard Model: D2-S4 - Parallel - 2
- Santosh Rai (Harish-Chandra Research Institute)
- Pradipta Ghosh (Department of Physics, Indian Institute of Technology Delhi)
- Bhawna Gomber (University of Hyderabad, India)
- Sushil Chauhan (Panjab University (IN))
WG2-Beyond the Standard Model: D3-S5 - Parallel - 2
- Santosh Rai (Harish-Chandra Research Institute)
- Bhawna Gomber (University of Hyderabad, India)
- Sushil Chauhan (Panjab University (IN))
- Pradipta Ghosh (Department of Physics, Indian Institute of Technology Delhi)
WG2-Beyond the Standard Model: D3-S6 - Parallel - 2
- Santosh Rai (Harish-Chandra Research Institute)
- Sushil Chauhan (Panjab University (IN))
- Pradipta Ghosh (Department of Physics, Indian Institute of Technology Delhi)
- Bhawna Gomber (University of Hyderabad, India)
WG2-Beyond the Standard Model: D4-S7 - Parallel - 2
- Sushil Chauhan (Panjab University (IN))
- Pradipta Ghosh (Department of Physics, Indian Institute of Technology Delhi)
- Santosh Kumar Rai (Harish-Chandra Research Institute)
- Bhawna Gomber (University of Hyderabad, India)
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Pramod Sharma (IISER Mohali)12/12/2022, 17:00Talk
The couplings of the Higgs boson (H) with massive gauge bosons of weak interaction (V = W, Z), can be probed in single Higgs boson production at the proposed future Large Hadron-Electron Collider (LHeC). In this talk, I will be presenting the collider reach on the new physics parameters of the HVV couplings assessed through the azimuthal angle correlation between missing energy (electron) and...
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Saumyen Kundu (BITS Pilani, K.K. Birla Goa Campus)12/12/2022, 17:15Talk
The non-thermally produced freeze-in dark matter is an attractive alternative to look beyond the weakly interacting massive particle (WIMP) paradigm. With the singlet-doublet dark matter model, a simple extension to the Standard Model (SM), we probe the light dark matter parameter space, assuming feeble couplings between SM particles and the dark matter candidate. We tried to show that in the...
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Shivam Gola12/12/2022, 17:30Talk
We consider a U(1)XโZ2โZ2โฒ extension of the Standard Model (SM), where the U(1)X charge of an SM field is given by a linear combination of its hypercharge and BโL number. Apart from the SM particle content, the model contains three right-handed neutrinos (RHNs) NRi and two scalars ฮฆ, ฯ, all singlets under the SM gauge group but charged under U(1)X gauge group. Two of these additional fields,...
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Mr Dipankar Pradhan (Department of Physics, Indian Institute of Technology Guwahati, Assam 781039, India)12/12/2022, 17:45Talk
Electroweak Symmetry Breaking (EWSB) is known to produce a massive universe that we live in. However, it may also provide an important boundary for freeze-in or freeze-out of dark matter (DM) connected to the Standard Model via the Higgs portal as processes contributing to DM relic differ across the boundary. We explore such possibilities in a two-component DM framework, where a massive...
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Shriniketan Acharya (University of Hyderabad,India)12/12/2022, 18:00Talk
We report on the results of new physics searches in a final state containing a photon and missing transverse energy called โmonophoton searchesโ in a p-p collision at โs =13TeV. The data correspond to an integrated luminosity of 138fb$^-$$^1$. In the Standard Model, the only process that results in the genuine signature of a single photon and large MET is Z + ฮณ production, in which the Z boson...
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Mr Nilavjyoti Hazarika (Gauhati University)12/12/2022, 18:15Talk
In this work we study a viable dark matter (DM) mass region in a non-supersymmetric $SO(10)$ GUT scalar dark matter model. The model comprises of a scalar singlet $S$ and an inert doublet $\phi$ which are odd under a discrete $Z_2$ matter parity $(-1)^{(B-L)}$. The DM is a mixture of $Z_2$ - odd scalar singlet $S$ and neutral component of doublet $\phi$ belonging to a new scalar 16...
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Mr Md Isha Ali13/12/2022, 15:00Talk
The recent Fermilab muon $g-2$ result and the same for electron due to fine-structure constant measurement through ${}^{133}~{\rm Cs}$ matter-wave interferometry are probed in relation to MSSM with non-holomorphic (NH) trilinear soft SUSY breaking terms, referred to as NHSSM. Supersymmetric contributions to charged lepton $(g-2)_l$ can be enhanced via the new trilinear terms involving a wrong...
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Ms Arpita Mondal (Department of Physics, Indian Institute of Technology Patna, Patna, Bihar-801106, India)13/12/2022, 15:15Talk
In this work, we have explored a highly motivated beyond the Standard Model scenario, namely, R-parity violating supersymmetry, in the context of light neutrino mass and mixing. The R-parity is broken by only the lepton number violating the bilinear term. We try to fit two non-zero neutrino mass square differences and three mixing angle values obtained from the global chi-square analysis of...
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Rameswar Sahu13/12/2022, 15:30Talk
Doubly-charged Higgs bosons within the mass range 84โ200 GeV decaying into a pair of W-bosons have been overlooked by the LHC searches. Such Higgses, when produced in a highly Lorentz-boosted regime, tend to manifest themselves as a single doubly-charged fat jet. We perform a multivariate analysis with the jet substructure variables as inputs to the boosted decision tree classifier to discern...
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Anureet Kaur (Panjab University, Chandigarh)13/12/2022, 15:45Talk
The CMS and ATLAS experiments have made clear observations of a Standard Model (SM) Higgs boson candidate with a mass of 125 GeV. While its discovery has reaffirmed the SM, detailed measurements of its properties and searches for additional similar undiscovered particles are promising methods of discovering Beyond SM (BSM) physics. A search for the SM Higgs boson decaying to Z boson and a...
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Indranil Das (Tata Inst. of Fundamental Research (IN))13/12/2022, 16:00Talk
Various extensions of the standard model (SM) invoke the presence of more than one Higgs doublet in the SM Lagrangian. In particular, the two-Higgs doublet model assumes the presence of an additional $SU(2)_{L}$ complex doublet. We are looking for $H^{\pm}$ in the top-quark pair production process, where one top quark decays to a charged Higgs boson and a bottom quark, and the other to a $W$...
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ANUPAM GHOSH (Physical Research Laboratory, Ahmedabad, 380009)13/12/2022, 16:15Talk
The inert Higgs-doublet model provides a simple framework to accommodate a viable Higgs portal scalar dark matter candidate, together with other heavier scalars of mass 100 GeV or more. We study the effect of next-to-leading order (NLO) QCD corrections in this scenario in the context of the Large Hadron Collider.
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${\cal{O}}(\alpha_s)$ corrections to the gluon-gluon-Higgs effective coupling... -
Mr Shyamashish Dey (Harish-Chandra Research Institute)14/12/2022, 11:00Talk
We consider a fermionic dark matter (DM) in the left-right symmetric framework by introducing a pair of vector-like (VL) doublets in the particle spectrum. The stability of the DM is ensured through an unbroken Z2 symmetry. We explore the parameter space of the model compatible with the observed relic density and direct and indirect detection cross sections. The presence of charged dark...
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Lopamudra Nayak (IIT Hyderabad)14/12/2022, 11:15Talk
We present a search for the lepton flavor violating decays $B_s \rightarrow \ell \tau$; $\ell = e, \mu$ using the full data sample of 121.4 fb$^{-1}$ of data recorded on $\Upsilon(5S)$ resonance with the Belle detector at the KEKB asymmetric energy $e^+e^-$ collider. We use $B_s\bar{B_s}$ events in which one $B_s$ meson is reconstructed in a semileptonic $B_s \rightarrow D_s \ell \nu$ decay...
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Tribeni Mishra (National Institute of Science Education and Research (NISER) (IN))14/12/2022, 11:30Talk
We present the results of a search for new physics in events with a photon, an electron or muon, and large missing transverse energy (MET). The study is based on a sample of proton-proton collisions at $\sqrt{s} = 13$ TeV corresponding to an integrated luminosity of 137 $fb^{-1}$ collected with the CMS detector in 2016-2018. Many models of new physics predict events with jets and significant...
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SHILPA JANGID (IIT HYDERABAD)14/12/2022, 11:45Talk
The extension of SM with inert doublet and right-handed neutrinos is being studied. The
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inert doublet which is odd under Z_2 does not take part in the electroweak symmetry breaking
(EWSB) and thus provides a viable dark matter candidate. The light neutrino mass is generated by the seesaw mechanism. It is observed that vacuum stability is rescued by the addition
of scalars i.e. doublet and... -
Ms Harjot Kaur (Panjab University (IN))14/12/2022, 12:00Talk
Standard Model (SM) is a theory of fundamental particles and their interactions. Despite being a successful theory, SM is unable to offer explanation for the existence of Dark matter (DM), matter-antimatter asymmetry, hierarchy problem, neutrino masses etc. Many models beyond the SM have evolved over the time to explain these limitations. One such model is Supersymmetry (SUSY) which has been...
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Pankaj Borah (Indian Institute of Technology Delhi)14/12/2022, 12:15Talk
Electroweak Baryogenesis needs a Strong First-Order Electroweak Phase Transition as a pre-requisite to explain the observed Baryon asymmetry of the Universe. A strong first-order electroweak phase transition, single or multi-step, can be accommodated easily in supersymmetric models with singlet extensions. Confining ourselves in the context of the Next-to-Minimal Supersymmetric Standard Model...
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Arjun Chhetri (University of Delhi (IN))14/12/2022, 16:00Talk
After a decade of Higgs boson discovery by the ATLAS and the CMS experiment at the LHC, subsequent observation of ttH events, and study of Higgs decaying into a pairs of W(Z) boson and $\tau$ fermion, physics beyond the standard model still remains a puzzle. Vector-like quarks (VLQs) are hypothetical spin-1/2 particles of the fourth generation that have left and right-handed components...
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Mr Shivam verma (Ramakrishna Mission Vivekananda Educational and Research Institute)14/12/2022, 16:15Talk
In this work, we have considered an extension of the standard model (SM) with a $SU(2)_L$ singlet vector-like quark (VLQ) with electric charge $Q=+2/3$. The model also contains an additional local $U(1)_d$ symmetry group and the corresponding gauge boson is the dark photon. The VLQ is charged while all the SM particles are neutral under the new $U(1)_d$ gauge group. Even though in this model...
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Arvind Bhaskar14/12/2022, 16:30Talk
The recent discrepancy in the measurement of $W$ boson mass as reported by the CDF collaboration and the longstanding anomalies in muon g-2, $R_{K^{(*)}}$ and $R_{D^{(*)}}$ observables suggest a promising path towards new physics. Leptoquarks (LQs) are known for explaining the anomalies separately in the current literature. However, these anomalies may be intertwined at a fundamental level,...
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Cyrin Neeraj14/12/2022, 16:45Talk
Direct searches for the vectorlike quarks (VLQs) generally assume that they decay exclusively to a third-generation quark and a heavy vector-boson or a Higgs. The current mass limits on the VLQs lie between $1.2-1.6$ TeV, for various weak representations and decays. These limits can relax drastically if the VLQs have additional decay(s). Here, we discuss a scenario where the VLQs decay...
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Aadarsh Singh14/12/2022, 17:00Talk
In this paper, we have studied a mechanism that is capable of naturally producing hierarchical masses. Starting from structures in abstract spaces, SM neutrino masses have been produced. We have also studied the possibility of this mechanism generating PMNS matrix on introducing randomness in the system. The flexibility of this mechanism with the nature of underlying structures in abstract...
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Pallabi Das (Princeton University (US))14/12/2022, 17:15Talk
The ATLAS and CMS collaborations have measured the Higgs boson in a variety of production and decay modes. These measurements still leave room for exotic Higgs boson couplings proposed by simple extensions of the Standard Model (SM). In recent years much effort has been put into looking for the 125 GeV Higgs decaying to two light pseudoscalars which then decay to bb, mumu, tautau etc. In this...
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Vinay Hegde (Texas Tech University (US))15/12/2022, 11:00Minireview Talk
The ATLAS and CMS experiments have analyzed about $140 fb^{-1}$ data which was collected during Run 2 of the LHC. There are several beyond standard model searches that are/will be carried out by these experiments. A brief summary of recent supersymmetry searches is presented. The talk discusses current limits on strongly produced SUSY particles, electroweakinos and sleptons. Some of the...
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Nishita Desai (Tata Institute of Fundamental Research)15/12/2022, 11:30Minireview Talk
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Swagata Biswas (National Institute of Technology Durgapur)15/12/2022, 12:00Talk
Rare baryonic decays induced by flavour changing neutral current (FCNC) have been of immense interest in recent years because of their sensitivities towards new physics (NP) beyond the standard model (SM). The exploration had been triggered with the observation of $ฮ_bโฮฮผ^+ ฮผ^-$ transition at the Fermilab [1] and the LHCb [2]. Theoretically these decays are also studied at different NP models...
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Duttatreya . (IISER Bhopal, India)15/12/2022, 12:15Talk
We build different gauged $U(1)_X$ models ($X = B, L B+L$) by finding anomaly free solutions. We analyse their phenomenological implications focusing on proton decay. We find that the $U(1)_L$ model is the most interesting case. We analyse the possibility of the gauged $U(1)_L$ breaking to a residual Z_3 subgroup and show that it leads to novel proton decays. We find that the usual two-body...
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Sanchari Bhattacharyya (University of Calcutta)15/12/2022, 12:30Talk
We investigate a left-right symmetric model obeying $SU(3)_C \otimes SU(2)_L \otimes U(1)_L \otimes SU(2)_R \otimes U(1)_R$ local gauge symmetry. We consider the fermions of full $\bf{27}$-plet of $E_6$. Having one bi-doublet, two doublet and one singlet scalar is necessary for a complete symmetry breaking to Standard Model. Its rich particle sector is one of the reasons behind our interest in...
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