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1.
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Higgs Self-Coupling at the HL-LHC and HE-LHC
/ Adhikary, Amit (Bangalore, Indian Inst. Sci.) ; Banerjee, Shankha (CERN) ; Barman, Rahool Kumar (Oklahoma State U.) ; Bhattacherjee, Biplob (Bangalore, Indian Inst. Sci.) ; Niyogi, Saurabh (Gokhale Coll., Calcutta)
The Higgs boson pair production has been studied in multifarious final states at the HL-LHC and HE-LHC. The optimisation for separating signal from the backgrounds are performed using cut-based and machine learning algorithms like BDT, XGBoost toolkit and DNN. [...]
2022 - 5 p.
- Published in : Springer Proc. Phys. 277 (2022) 27-31
In : 24th DAE-BRNS High Energy Physics Symposium, Jatni, India, 14 - 18 Dec 2020, pp.27-31
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2.
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Prospects for exotic $h\rightarrow 4 \tau$ decays in single and di-Higgs boson production at the LHC and future hadron colliders
/ Adhikary, Amit (Warsaw U. ; Bangalore, Indian Inst. Sci.) ; Banerjee, Shankha (CERN) ; Barman, Rahool Kumar (Oklahoma State U.) ; Batell, Brian (Pittsburgh U.) ; Bhattacherjee, Biplob (Bangalore, Indian Inst. Sci.) ; Bose, Camellia (Bangalore, Indian Inst. Sci.) ; Qian, Zhuoni (Hangzhou Normal U.) ; Spannowsky, Michael (Durham U., IPPP)
We study the prospects for observing exotic decays of the Standard Model Higgs boson $h$ into light beyond the Standard Model scalars $a$ with mass $m_{a} \lesssim m_{h}/2$ in the single Higgs and Higgs pair production channels at the high luminosity run of the Large Hadron Collider (HL-LHC). Discovery prospects for single Higgs production in the gluon-gluon fusion and vector boson fusion modes with the Higgs boson decaying via the exotic mode $h \to aa \to 4\tau$ are analyzed at the HL-LHC. [...]
arXiv:2211.07674.-
2024-03-01 - 35 p.
- Published in : Phys. Rev. D 109 (2024) 055008
Fulltext: 2211.07674 - PDF; Publication - PDF;
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3.
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Prospects of non-resonant and resonant Higgs pair production at the HL-LHC
/ Adhikary, Amit (Warsaw U.) ; Banerjee, Shankha (CERN) ; Barman, Rahool Kumar (Oklahoma State U.) ; Bhattacherjee, Biplob (Bangalore, Indian Inst. Sci.) ; Niyogi, Saurabh (Gokhale Coll., Calcutta)
We combined multiple final states ensuing from non-resonant Higgs pair production by optimising over each final state using multivariate techniques and put bounds on the self-coupling of Higgs by employing the log-likelihood confidence level hypothesis test. Further, we calculate the production cross-section limits from multifarious heavy Higgs decay channels, including resonant di-Higgs production, in a model-independent way and draw its impact on the MSSM parameter space at the HL-LHC..
2022 - 6 p.
- Published in : PoS EPS-HEP2021 (2022) 610
Fulltext: PDF;
In : European Physics Society conference on High Energy Physics 2021, Online, Online, 26 - 30 Jul 2021, pp.610
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4.
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The non-resonant and resonant Higgs pair production at the HL-LHC
/ Adhikary, Amit (Warsaw U. (main) ; Bangalore, Indian Inst. Sci.) ; Banerjee, Shankha (CERN) ; Barman, Rahool Kumar (Oklahoma State U.) ; Bhattacherjee, Biplob (Bangalore, Indian Inst. Sci.) ; Niyogi, Saurabh (Gokhale Coll., Calcutta)
Direct measurement of the Higgs self-coupling is crucial to understanding the nature of electroweak symmetry breaking, which requires observation of Higgs pair production. We study the prospects of observing the non-resonant Higgs pair production at the high luminosity run of the 14 TeV LHC (HL-LHC) upon considering various di-Higgs final states. [...]
SISSA, 2021 - 5 p.
- Published in : PoS LHCP2021 (2021) 155
Fulltext: PDF;
In : 9th Annual Large Hadron Collider Physics (LHCP 2021), Online, GB, 7 - 12 Jun 2021, pp.155
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5.
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Prospects of non-resonant Higgs pair production at the HL-LHC and HE-LHC
/ Adhikary, Amit (Bangalore, Indian Inst. Sci.) ; Banerjee, Shankha (Durham U., IPPP) ; Barman, Rahool Kumar (IACS, Kolkata) ; Bhattacherjee, Biplob (Bangalore, Indian Inst. Sci.) ; Niyogi, Saurabh (Gokhale Coll., Calcutta)
The prospects of observing the di-Higgs production in the Standard Model (SM) is explored. We choose final states based on considerable production rate and cleanliness. [...]
2020 - 8 p.
- Published in : J. Phys. : Conf. Ser. 1690 (2020) 012149
In : 5th International Conference on Particle Physics and Astrophysics (ICPPA), pp.012149
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6.
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Determining the lifetime of long-lived particles at the HL-LHC
/ Banerjee, Shankha (Durham U., IPPP) ; Bhattacherjee, Biplob (Bangalore, Indian Inst. Sci.) ; Goudelis, Andreas (Clermont-Ferrand U.) ; Herrmann, Björn (Annecy, LAPTH) ; Sengupta, Dipan (UC, San Diego) ; Sengupta, Rhitaja (Bangalore, Indian Inst. Sci.)
We examine the capacity of the Large Hadron Collider to determine the mean proper lifetime of long-lived particles assuming different decay final states. We mostly concentrate on the high luminosity runs of the LHC, and therefore, develop our discussion in light of the high amount of pile-up and the various upgrades for the HL-LHC runs. [...]
arXiv:1912.06669; IPPP/19/94; LAPTH-051/19.-
2021-02-19 - 35 p.
- Published in : Eur. Phys. J. C 81 (2021) 172
Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF;
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7.
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8.
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Revisiting the non-resonant Higgs pair production at the HL-LHC
/ Adhikary, Amit (Bangalore, Indian Inst. Sci.) ; Banerjee, Shankha (Durham U., IPPP ; Annecy, LAPTH) ; Barman, Rahool Kumar (Bangalore, Indian Inst. Sci.) ; Bhattacherjee, Biplob (Bangalore, Indian Inst. Sci.) ; Niyogi, Saurabh (Delhi U.)
We study the prospects of observing the non-resonant di-Higgs pair production in the Standard Model (SM) at the high luminosity run of the 14 TeV LHC (HL-LHC), upon combining multiple final states chosen on the basis of their yield and cleanliness. In particular, we consider the $b\bar{b}\gamma \gamma, b\bar{b} \tau^+ \tau^-, b\bar{b} WW^*, WW^*\gamma \gamma$ and $4W$ channels mostly focusing on final states with photons and/or leptons and study 11 final states. [...]
arXiv:1712.05346; LAPTH-062-17; IPPP-17-100; LAPTH-062/17; IPPP/17/100.-
2018-07-18 - 65 p.
- Published in : JHEP 07 (2018) 116
Article from SCOAP3: PDF; Preprint: PDF;
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9.
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10.
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Implications of 98 GeV and 125 GeV Higgs scenario in non-decoupling SUSY with updated ATLAS, CMS and PLANCK data
/ Bhattacherjee, Biplob (Kavli IPMU, Japan) ; Chakraborti, Manimala (IACS, Kolkata) ; Chakraborty, Amit (IACS, Kolkata) ; Chattopadhyay, Utpal (IACS, Kolkata) ; Das, Debottam (Wurzburg, Germany) ; Ghosh, Dilip Kumar (IACS, Kolkata)
We discuss both MSSM and NMSSM scenarios in which the lightest Higgs boson with $m_h=98$~GeV is consistent with the small excess ($\sim 2.3 \sigma$) observed at the LEP in $e^+ e^-\rightarrow Zh$, with $h \rightarrow b {\bar b}$ process and the heavier Higgs boson of mass close to 125~GeV as the observed candidate of the SM Higgs like particle at the LHC. We show the allowed regions in the non-decoupling Higgs zone of MSSM parameter space which are consistent with several low energy constraints coming from heavy flavour physics, latest experimental data on Higgs signals and lower limit on superparticle masses from 7~TeV and 8~TeV LHC run. [...]
arXiv:1305.4020.-
2013 - 34 p.
- Published in : Phys. Rev. D 88 (2013) 035011
External link: Preprint
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