$$hh+\text {Jet}$$ h h + Jet production at 100 TeV

Abstract

Higgs pair production is a crucial phenomenological process in deciphering the nature of the TeV scale and the mechanism underlying electroweak symmetry breaking. At the Large Hadron Collider, this process is statistically limited. Pushing the energy frontier beyond the LHC's reach will create new opportunities to exploit the rich phenomenology at higher centre-of-mass energies and luminosities. In this work, we perform a comparative analysis of the hh + jet channel at a future 100 TeV hadron collider. We focus on the hh → bbbb and hh → bbτ + τ − channels and employ a range of analysis techniques to estimate the sensitivity potential that can be gained by including this jet-associated Higgs pair production to the list of sensitive collider processes in such an environment. In particular, we observe that hh → bbτ + τ − in the boosted regime exhibits a large sensitivity to the Higgs boson self-coupling and the Higgs selfcoupling could be constrained at the 8% level in this channel alone.

Constraints on the quartic Higgs self-coupling from double-Higgs production at future hadron colliders

“…for instance [10][11][12][13][14][15][16]). Significantly improved prospects in extracting the h 3 coupling would be offered by a highenergy upgrade of the LHC (HE-LHC) to 27 TeV [17] or a future circular collider (FCCpp) operating at a centre-of-mass (CM) energy of 100 TeV [4,11,[18][19][20][21][22]. A 100 TeV pp machine, in particular, may ultimately allow one to determine the cubic Higgs self-coupling with a statistical precision of the order of a few percent.…”

Collider and gravitational wave complementarity in exploring the singlet extension of the standard model

“…Future precise measurements of the Higgs cubic and quartic self-couplings can be used to reconstruct the Higgs potential to confirm ultimately the mechanism of EW symmetry breaking 11 and shed light on the nature of the EWPT. The measurements of above double Higgs production can be used to determine the cubic coupling and there have been extensive studies on this topic [75,165,166]. The best sensitivities obtained for these future colliders is typically at O(1).…”

“…[75](for other studies, see e.g. [78,[165][166][167][167][168][169][170]). Here the inner and outer bar regions denote the 68%CL and 95%CL results.…”

Probing the trilinear Higgs boson self-coupling via single Higgs production at the LHeC

“…For the bbbb production, the observed upper limit by ATLAS using the non-resonant Higgs pair production data is 13 times the SM value at 95% C.L [11]. There are also extensive phenomenological studies on determinning the trilinear Higgs self-coupling directly at the LHC [12][13][14][15][16][17][18][19][20][21], the future electron-positron collider [22][23][24][25], and future high energy hadron colliders [26][27][28][29][30][31][32][33][34], in which strict constraints are obtained with higher integrated luminosities and energies. On the other hand, an indirect method is proposed for constraining the Higgs self-coupling via single Higgs production at next-to-leading order (NLO) [24,[35][36][37][38][39].…”