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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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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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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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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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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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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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