Measurement of Boosted Higgs Bosons Produced Via Vector Boson Fusion or Gluon Fusion in the H → B(b)over-Bar Decay Mode Using Lhc Proton-Proton Collision Data at √<i>s</I>=13 Tev

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2024

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Springer

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Abstract

A measurement is performed of Higgs bosons produced with high transverse momentum (p(T)) via vector boson or gluon fusion in proton-proton collisions. The result is based on a data set with a center-of-mass energy of 13 TeV collected in 2016-2018 with the CMS detector at the LHC and corresponds to an integrated luminosity of 138 fb(-1). The decay of a high-p(T) Higgs boson to a boosted bottom quark-antiquark pair is selected using large-radius jets and employing jet substructure and heavy-flavor taggers based on machine learning techniques. Independent regions targeting the vector boson and gluon fusion mechanisms are defined based on the topology of two quark-initiated jets with large pseudorapidity separation. The signal strengths for both processes are extracted simultaneously by performing a maximum likelihood fit to data in the large-radius jet mass distribution. The observed signal strengths relative to the standard model expectation are 4.9(-1.6)(+1.9) and 1.6(-1.5)(+1.7) for the vector boson and gluon fusion mechanisms, respectively. A differential cross section measurement is also reported in the simplified template cross section framework.

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Osherson, Marc/0000-0002-9760-9976; Battilana, Carlo/0000-0002-3753-3068; Della Ricca, Giuseppe/0000-0003-2831-6982; Martinez Rivero, Celso/0000-0002-3224-956X; Schieck, Jochen/0000-0002-1058-8093; Navarrete Ramos, Efren/0000-0002-5180-4020; Giommi, Luca/0000-0003-3539-4313; Akgun, Bora/0000-0001-8888-3562

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Hadron-Hadron Scattering, Higgs Physics

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12

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