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arXiv:1902.10229
Original
ATLAS, CMS · 1902
Earlier work this paper cites.
Physics of the HL-LHC Working Group
Original
1902
Earlier work this paper cites.
S. Banerjee, F. Krauss, and M. Spannowsky, Revisiting the t t ¯ h h t\bar{t}hh channel at the FCC-hh
Original
1904
Earlier work this paper cites.
A. Djouadi, J. Kalinowski, and M. Spira, HDECAY: A Program for Higgs boson decays in the standard model and its supersymmetric extension
1998
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K. Agashe, R. Contino, and A. Pomarol, The Minimal composite Higgs model
2005
Earlier work this paper cites.
C. O. Dib, R. Rosenfeld, and A. Zerwekh, Double Higgs production and quadratic divergence cancellation in little Higgs models with T parity
2006
Earlier work this paper cites.
R. Contino, L. Da Rold, and A. Pomarol, Light custodians in natural composite Higgs models
2007
Earlier work this paper cites.
G. F. Giudice, C. Grojean, A. Pomarol, and R. Rattazzi, The Strongly-Interacting Light Higgs
2007
Earlier work this paper cites.
A. Noble and M. Perelstein, Higgs self-coupling as a probe of electroweak phase transition
Original
2008
Earlier work this paper cites.
T. Sjostrand, S. Mrenna, and P. Z. Skands, A Brief Introduction to PYTHIA 8.1
Original
2008
Earlier work this paper cites.
J. A. Aguilar-Saavedra, Identifying top partners at LHC
Original
2009
Earlier work this paper cites.
D. Krohn, J. Thaler, and L.-T. Wang, Jet Trimming
Original
2010
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T. Plehn, G. P. Salam, and M. Spannowsky, Fat Jets for a Light Higgs
Original
2010
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2019

Anatomy of the $tthh$ Physics at HL-LHC

Li, Lingfeng, Li, Ying-Ying, Liu, Tao

Understand

The $tthh$ production at colliders contain rich information on the nature of Higgs boson.

In this article, we systematically studied its physics at High-Luminosity Large Hadron Collider (HL-LHC), using exclusive channels with multiple ($\geq 5$) $b$-jets and one lepton ($5b1\ell$), multiple ($\geq 5$) $b$-jets and opposite-sign di-lepton ($5b2\ell$), same-sign di-lepton (SS2$\ell$), multiple leptons (multi-$\ell$), and di-tau resonance ($\tau\tau$).
The scenarios analyzed include: (1) the $tthh$ production in Standard Model; (2) the $tthh$ production mediated by anomalous cubic Higgs self-coupling and $tthh$ contact interaction; (3) heavy Higgs ($H$) production with $tt H \to tthh$; and (4) pair production of fermionic top partners ($T$) with $T T \to tthh$.
To address the complication of event topologies and the mess of combinatorial backgrounds, a tool of Boosted-Decision-Tree was applied in the analyses.

Built on

arXiv:1902.10229
Original
ATLAS, CMS · 1902
Earlier work this paper cites.
Physics of the HL-LHC Working Group
Original
1902
Earlier work this paper cites.
S. Banerjee, F. Krauss, and M. Spannowsky, Revisiting the t t ¯ h h t\bar{t}hh channel at the FCC-hh
Original
1904
Earlier work this paper cites.
A. Djouadi, J. Kalinowski, and M. Spira, HDECAY: A Program for Higgs boson decays in the standard model and its supersymmetric extension
1998
Earlier work this paper cites.
K. Agashe, R. Contino, and A. Pomarol, The Minimal composite Higgs model
2005
Earlier work this paper cites.
C. O. Dib, R. Rosenfeld, and A. Zerwekh, Double Higgs production and quadratic divergence cancellation in little Higgs models with T parity
2006
Earlier work this paper cites.
R. Contino, L. Da Rold, and A. Pomarol, Light custodians in natural composite Higgs models
2007
Earlier work this paper cites.
G. F. Giudice, C. Grojean, A. Pomarol, and R. Rattazzi, The Strongly-Interacting Light Higgs
2007
Earlier work this paper cites.
A. Noble and M. Perelstein, Higgs self-coupling as a probe of electroweak phase transition
Original
2008
Earlier work this paper cites.
T. Sjostrand, S. Mrenna, and P. Z. Skands, A Brief Introduction to PYTHIA 8.1
Original
2008
Earlier work this paper cites.
J. A. Aguilar-Saavedra, Identifying top partners at LHC
Original
2009
Earlier work this paper cites.
D. Krohn, J. Thaler, and L.-T. Wang, Jet Trimming
Original
2010
Earlier work this paper cites.
T. Plehn, G. P. Salam, and M. Spannowsky, Fat Jets for a Light Higgs
Original
2010
Earlier work this paper cites.