An inclusive search for the standard model Higgs boson (H) produced with large transverse momentum (p_T) and decaying to a bottom quark-antiquark pair (bb[over ¯]) is performed using a data set of pp collisions at sqrt[s]=13  TeV collected with the CMS experiment at the LHC. The data sample corresponds to an integrated luminosity of 35.9  fb^-1. A highly Lorentz-boosted Higgs boson decaying to bb[over ¯] is reconstructed as a single, large radius jet, and it is identified using jet substructure and dedicated b tagging techniques. The method is validated with Z→bb[over ¯] decays. The Z→bb[over ¯] process is observed for the first time in the single-jet topology with a local significance of 5.1 standard deviations (5.8 expected). For a Higgs boson mass of 125 GeV, an excess of events above the expected background is observed (expected) with a local significance of 1.5 (0.7) standard deviations. The measured cross section times branching fraction for production via gluon fusion of H→bb[over ¯] with reconstructed p_T>450  GeV and in the pseudorapidity range -2.5<η<2.5 is 74±48(stat)_-10^+17(syst) fb, which is consistent within uncertainties with the standard model prediction

Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., et al. (2018). Inclusive Search for a Highly Boosted Higgs Boson Decaying to a Bottom Quark-Antiquark Pair. PHYSICAL REVIEW LETTERS, 120(7) [10.1103/PhysRevLett.120.071802].

Inclusive Search for a Highly Boosted Higgs Boson Decaying to a Bottom Quark-Antiquark Pair

Brianza, L;Brivio, F;Ciriolo, V;Dinardo, M E;Fiorendi, S;Ghezzi, A;Govoni, P;Paganoni, M;Pauwels, K;Pigazzini, S;Ragazzi, S;Tabarelli de Fatis, T;Lucchini, M T;Gerosa, R;Massironi, A;De Guio, F;
2018

Abstract

An inclusive search for the standard model Higgs boson (H) produced with large transverse momentum (p_T) and decaying to a bottom quark-antiquark pair (bb[over ¯]) is performed using a data set of pp collisions at sqrt[s]=13  TeV collected with the CMS experiment at the LHC. The data sample corresponds to an integrated luminosity of 35.9  fb^-1. A highly Lorentz-boosted Higgs boson decaying to bb[over ¯] is reconstructed as a single, large radius jet, and it is identified using jet substructure and dedicated b tagging techniques. The method is validated with Z→bb[over ¯] decays. The Z→bb[over ¯] process is observed for the first time in the single-jet topology with a local significance of 5.1 standard deviations (5.8 expected). For a Higgs boson mass of 125 GeV, an excess of events above the expected background is observed (expected) with a local significance of 1.5 (0.7) standard deviations. The measured cross section times branching fraction for production via gluon fusion of H→bb[over ¯] with reconstructed p_T>450  GeV and in the pseudorapidity range -2.5<η<2.5 is 74±48(stat)_-10^+17(syst) fb, which is consistent within uncertainties with the standard model prediction
Articolo in rivista - Articolo scientifico
Hadron - Hadron collisions (experiments)
English
2018
120
7
071802
none
Sirunyan, A., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., et al. (2018). Inclusive Search for a Highly Boosted Higgs Boson Decaying to a Bottom Quark-Antiquark Pair. PHYSICAL REVIEW LETTERS, 120(7) [10.1103/PhysRevLett.120.071802].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/194467
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