Search for heavy resonances decaying into two Higgs bosons in the $${text {b}}bar{textrm{b}}tau ^{+}tau ^{-}$$ final state in proton–proton collisions at $$sqrt{s} = 13,text {Tehspace{-.08em}V}$$
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abstract
Abstract; ; A search is presented for massive narrow-width resonances in the mass range of 1–4.5; ; ; $$,text {Tehspace{-.08em}V}$$; ; ; ; Te; ; V; ; ; ; ; , decaying into pairs of Higgs bosons (HH). The search uses proton–proton collision data at a center-of-mass energy of 13; ; ; $$,text {Tehspace{-.08em}V}$$; ; ; ; Te; ; V; ; ; ; ; collected with the CMS detector at the CERN LHC during 2016–2018, corresponding to an integrated luminosity of 138; ; ; $$,text {fb}^{-1}$$; ; ; ; ; fb; ; -; 1; ; ; ; ; ; ; . The analysis targets final states where one Higgs boson decays into a pair of bottom quarks and the other into a pair of tau leptons,; ; ; $$text {X}rightarrow text {HH}rightarrow text {b}bar{text {b}},tau ^{+}tau ^{-}$$; ; ; X; →; HH; →; b; ; ; b; ; ; ¯; ; ; ; ; τ; +; ; ; τ; -; ; ; ; ; ; . It uses a single large radius jet to reconstruct the; ; ; $$text {H}rightarrow text {b}bar{text {b}}$$; ; ; H; →; b; ; ; b; ; ; ¯; ; ; ; ; ; ; decay, while the; ; ; $$text {H}rightarrow tau ^{+}tau ^{-}$$; ; ; H; →; ; τ; +; ; ; τ; -; ; ; ; ; ; decay products can either be contained within a single large radius jet or appear as two isolated tau leptons. The observed data are consistent with standard model background expectations. Upper limits at 95% confidence level are set on the production cross section for resonant HHproduction for masses between 1 and 4.5; ; ; $$,text {Tehspace{-.08em}V}$$; ; ; ; Te; ; V; ; ; ; ; . This analysis sets the most sensitive limits to date on; ; ; $$text {X}rightarrow text {HH}rightarrow text {b}bar{text {b}}, tau ^{+}tau ^{-}$$; ; ; X; →; HH; →; b; ; ; b; ; ; ¯; ; ; ; ; τ; +; ; ; τ; -; ; ; ; ; ; decays in the mass range of 1.4–4.5; ; ; $$,text {Tehspace{-.08em}V}$$; ; ; ; Te; ; V; ; ; ; ; .;
