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Abstract:

A search for decays of the Higgs boson into a pair of new spin-zero particles, H→aa, where the a-bosons decay into a b-quark pair and a muon pair, is presented. The search uses 36.1 fb −1 of proton–proton collision data at s=13 TeV recorded by the ATLAS experiment at the LHC in 2015 and 2016. No significant deviation from the Standard Model prediction is observed. Upper limits at 95% confidence level are placed on the branching ratio (σ H /σ SM )×B(H→aa→bbμμ), ranging from 1.2×10 −4 to 8.4×10 −4 in the a-boson mass range of 20–60 GeV. Model-independent limits are set on the visible production cross-section times the branching ratio to the bbμμ final state for new physics, σ vis (X)×B(X→bbμμ), ranging from 0.1 fb to 0.73 fb for m μμ between 18 and 62 GeV. © 2018 The Author

Registro:

Documento: Artículo
Título:Search for Higgs boson decays into a pair of light bosons in the bbμμ final state in pp collision at √s=13TeV with the ATLAS detector
Autor:Aaboud, M. et al.
Este artículo contiene 2915 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2915 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Año:2019
Volumen:790
Página de inicio:1
Página de fin:21
DOI: http://dx.doi.org/10.1016/j.physletb.2018.10.073
Título revista:Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Título revista abreviado:Phys Lett Sect B Nucl Elem Part High-Energy Phys
ISSN:03702693
CODEN:PYLBA
Registro:http://digital.bl.fcen.uba.ar/collection/paper/document/paper_03702693_v790_n_p1_Aaboud

Referencias:

  • Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC (2012) Phys. Lett. B, 716, p. 1
  • Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC (2012) Phys. Lett. B, 716, p. 30
  • Curtin, D., Exotic decays of the 125 GeV Higgs boson (2014) Phys. Rev. D, 90
  • Curtin, D., Essig, R., Zhong, Y.-M., Uncovering light scalars with exotic Higgs decays to bb‾μ + μ − ; Dobrescu, B.A., Matchev, K.T., Light axion within the next-to-minimal supersymmetric standard model (2000) J. High Energy Phys., 9
  • Ellwanger, U., Gunion, J.F., Hugonie, C., Moretti, S., Towards a no lose theorem for NMSSM Higgs discovery at the LHC (2003); Dermisek, R., Gunion, J.F., Escaping the large fine-tuning and little hierarchy problems in the next to minimal supersymmetric model and h→aa decays (2005) Phys. Rev. Lett., 95
  • Chang, S., Dermisek, R., Gunion, J.F., Weiner, N., Nonstandard Higgs boson decays (2008) Annu. Rev. Nucl. Part. Sci., 58, p. 75
  • Morrissey, D.E., Pierce, A., Modified Higgs boson phenomenology from gauge or gaugino mediation in the next-to-minimal supersymmetric standard model (2008) Phys. Rev. D, 78
  • Silveira, V., Zee, A., Scalar phantoms (1985) Phys. Lett. B, 161, p. 136
  • Pospelov, M., Ritz, A., Voloshin, M.B., Secluded WIMP dark matter (2008) Phys. Lett. B, 662, p. 53
  • Draper, P., Liu, T., Wagner, C.E.M., Wang, L.-T., Zhang, H., Dark light-Higgs bosons (2011) Phys. Rev. Lett., 106
  • Ipek, S., McKeen, D., Nelson, A.E., Renormalizable model for the galactic center gamma-ray excess from dark matter annihilation (2014) Phys. Rev. D, 90
  • Martin, A., Shelton, J., Unwin, J., Fitting the galactic center gamma-ray excess with cascade annihilations (2014) Phys. Rev. D, 90
  • Profumo, S., Ramsey-Musolf, M.J., Shaughnessy, G., Singlet Higgs phenomenology and the electroweak phase transition (2007) J. High Energy Phys., 8
  • Blinov, N., Kozaczuk, J., Morrissey, D.E., Tamarit, C., Electroweak baryogenesis from exotic electroweak symmetry breaking (2015) Phys. Rev. D, 92
  • Craig, N., Katz, A., Strassler, M., Sundrum, R., Naturalness in the dark at the LHC (2015) J. High Energy Phys., 7
  • Curtin, D., Verhaaren, C.B., Discovering uncolored naturalness in exotic Higgs decays (2015) J. High Energy Phys., 12
  • Ajello, M., Fermi-LAT observations of high-energy γ-ray emission toward the galactic center (2016) Astrophys. J., 819, p. 44
  • Boehm, C., Dolan, M.J., McCabe, C., Spannowsky, M., Wallace, C.J., Extended gamma-ray emission from coy dark matter (2014) J. Cosmol. Astropart. Phys., 1405
  • Measurements of the Higgs boson production and decay rates and constraints on its couplings from a combined ATLAS and CMS analysis of the LHC pp collision data at √s=7 and 8TeV (2016) J. High Energy Phys., 8
  • Branco, G., Theory and phenomenology of two-Higgs-doublet models (2012) Phys. Rep., 516, p. 1
  • Search for Higgs bosons decaying to aa in the μμττ final state in pp collisions at √s=8TeV with the ATLAS experiment (2015) Phys. Rev. D, 92
  • A search for pair production of new light bosons decaying into muons (2016) Phys. Lett. B, 752, p. 146
  • Search for light bosons in decays of the 125GeV Higgs boson in proton–proton collisions at √s=8TeV (2017) J. High Energy Phys., 10
  • Search for Higgs boson decays to beyond-the-Standard-Model light bosons in four-lepton events with the ATLAS detector at √s=13TeV (2018); Search for Higgs boson decays into pairs of light (pseudo)scalar particles in the γγjj final state in pp collisions at √s=13 TeV with the ATLAS detector (2018) Phys. Lett. B, 782, p. 750
  • Search for an exotic decay of the Higgs boson to a pair of light pseudoscalars in the final state with two b quarks and two τ leptons in proton–proton collisions at √s=13 TeV (2018); Search for the Higgs boson produced in association with a vector boson and decaying into two spin-zero particles in the H→aa→4b channel in pp collisions at √s=13 TeV with the ATLAS detector (2018); The ATLAS experiment at the CERN large hadron collider (2008) J. Instrum., 3
  • Nason, P., A new method for combining NLO QCD with shower Monte Carlo algorithms (2004) J. High Energy Phys., 11
  • Frixione, S., Nason, P., Oleari, C., Matching NLO QCD computations with parton shower simulations: the POWHEG method (2007) J. High Energy Phys., 11
  • Alioli, S., Nason, P., Oleari, C., Re, E., A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX (2010) J. High Energy Phys., 1006
  • Sjöstrand, T., An introduction to PYTHIA 8.2 (2015) Comput. Phys. Commun., 191, p. 159
  • Measurement of the Z/γ ⁎ boson transverse momentum distribution in pp collisions at √s=7TeV with the ATLAS detector (2014) J. High Energy Phys., 9
  • de Florian, D., Handbook of LHC Higgs cross sections: 4. Deciphering the nature of the Higgs sector (2016); Anastasiou, C., Duhr, C., Dulat, F., Herzog, F., Mistlberger, B., Higgs boson gluon-fusion production in QCD at three loops (2015) Phys. Rev. Lett., 114
  • Anastasiou, C., High precision determination of the gluon fusion Higgs boson cross-section at the LHC (2016) J. High Energy Phys., 5
  • Actis, S., Passarino, G., Sturm, C., Uccirati, S., NLO electroweak corrections to Higgs boson production at hadron colliders (2008) Phys. Lett. B, 670, p. 12
  • Anastasiou, C., Boughezal, R., Petriello, F., Mixed QCD-electroweak corrections to Higgs boson production in gluon fusion (2009) J. High Energy Phys., 4
  • Andersen, J.R., (2013) Handbook of LHC Higgs Cross Sections: 3. Higgs Properties, , S. Heinemeyer C. Mariotti G. Passarino R. Tanaka
  • Ciccolini, M., Denner, A., Dittmaier, S., Strong and electroweak corrections to the production of a Higgs boson + 2 jets via weak interactions at the large hadron collider (2007) Phys. Rev. Lett., 99
  • Ciccolini, M., Denner, A., Dittmaier, S., Electroweak and QCD corrections to Higgs production via vector-boson fusion at the LHC (2008) Phys. Rev. D, 77
  • Bolzoni, P., Maltoni, F., Moch, S.-O., Zaro, M., Higgs boson production via vector-boson fusion at next-to-next-to-leading order in QCD (2010) Phys. Rev. Lett., 105
  • Gleisberg, T., Event generation with SHERPA 1.1 (2009) J. High Energy Phys., 2
  • Ball, R.D., Parton distributions for the LHC Run II (2015) J. High Energy Phys., 4
  • Anastasiou, C., Dixon, L.J., Melnikov, K., Petriello, F., High precision QCD at hadron colliders: electroweak gauge boson rapidity distributions at NNLO (2004) Phys. Rev. D, 69
  • Höche, S., Krauss, F., Schumann, S., Siegert, F., NLO matrix elements and truncated showers (2011) J. High Energy Phys., 8
  • Campbell, J.M., Ellis, R.K., Williams, C., Vector boson pair production at the LHC (2011) J. High Energy Phys., 7
  • Lai, H.-L., Guzzi, M., Huston, J., Li, Z., Nadolsky, P.M., New parton distributions for collider physics (2010) Phys. Rev. D, 82
  • Sjöstrand, T., Mrenna, S., Skands, P.Z., PYTHIA 6.4 physics and manual (2006) J. High Energy Phys., 5
  • Skands, P.Z., Tuning Monte Carlo generators: the Perugia tunes (2010) Phys. Rev. D, 82
  • Comparison of Monte Carlo generator predictions for gap fraction and jet multiplicity observables in tt¯ events (2014), https://cds.cern.ch/record/1703034, ATL-PHYS-PUB-2014-005, url; Czakon, M., Fiedler, P., Mitov, A., Total top-quark pair-production cross section at hadron colliders through O(α S 4 ) (2013) Phys. Rev. Lett., 110
  • Czakon, M., Mitov, A., Top++: a program for the calculation of the top-pair cross-section at hadron colliders (2014) Comput. Phys. Commun., 185, p. 2930
  • Kidonakis, N., Next-to-next-to-leading-order collinear and soft gluon corrections for t-channel single top quark production (2011) Phys. Rev. D, 83
  • Kidonakis, N., Two-loop soft anomalous dimensions for single top quark associated production with a W- or H (2010) Phys. Rev. D, 82
  • Alwall, J., The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations (2014) J. High Energy Phys., 7
  • Lazopoulos, A., McElmurry, T., Melnikov, K., Petriello, F., Next-to-leading order QCD corrections to tt¯Z production at the LHC (2008) Phys. Lett. B, 666, p. 62
  • Campbell, J.M., Ellis, R.K., tt¯W production and decay at NLO (2012) J. High Energy Phys., 7
  • Summary of ATLAS Pythia 8 tunes (2012), https://cds.cern.ch/record/1474107, ATL-PHYS-PUB-2012-003, url; Martin, A., Stirling, W., Thorne, R., Watt, G., Parton distributions for the LHC (2009) Eur. Phys. J. C, 63, p. 189
  • The ATLAS simulation infrastructure (2010) Eur. Phys. J. C, 70, p. 823
  • Agostinelli, S., GEANT4 – a simulation toolkit (2003) Nucl. Instrum. Methods A, 506, p. 250
  • Vertex reconstruction performance of the ATLAS detector at √s=13TeV (2015), https://cds.cern.ch/record/2037717, ATL-PHYS-PUB-2015-026, url; Muon reconstruction performance of the ATLAS detector in proton–proton collision data at √s=13TeV (2016) Eur. Phys. J. C, 76, p. 292
  • Topological cell clustering in the ATLAS calorimeters and its performance in LHC Run 1 (2017) Eur. Phys. J. C, 77, p. 490
  • Cacciari, M., Salam, G.P., Soyez, G., The anti-k t jet clustering algorithm (2008) J. High Energy Phys., 4
  • Cacciari, M., Salam, G.P., Soyez, G., FastJet user manual (2012) Eur. Phys. J. C, 72, p. 1896
  • Performance of pile-up mitigation techniques for jets in pp collisions at √s=8TeV using the ATLAS detector (2016) Eur. Phys. J. C, 76, p. 581
  • Performance of b-jet identification in the ATLAS experiment (2016) J. Instrum., 11
  • Optimisation of the ATLAS b-tagging performance for the 2016 LHC Run (2016), https://cds.cern.ch/record/2160731, ATL-PHYS-PUB-2016-012, url; Performance of missing transverse momentum reconstruction with the ATLAS detector using proton–proton collisions at √s=13 TeV (2017); Erdmann, J., A likelihood-based reconstruction algorithm for top-quark pairs and the KLFitter framework (2014) Nucl. Instrum. Methods A, 748, p. 18
  • Luminosity determination in pp collisions at √s=8TeV using the ATLAS detector at the LHC (2016) Eur. Phys. J. C, 76, p. 653
  • Butterworth, J., PDF4LHC recommendations for LHC Run II (2016) J. Phys. G, 43
  • Handbook of LHC Higgs cross sections: 3. Higgs properties (2013); Hamilton, K., Nason, P., Re, E., Zanderighi, G., NNLOPS simulation of Higgs boson production (2013) J. High Energy Phys., 10
  • Junk, T., Confidence level computation for combining searches with small statistics (1999) Nucl. Instrum. Methods A, 434, p. 435
  • Read, A.L., Presentation of search results: the CLs technique (2002) J. Phys. G, 28, p. 2693
  • ATLAS Computing Acknowledgements https://cds.cern.ch/record/2202407, ATL-GEN-PUB-2016-002, url

Citas:

---------- APA ----------
(2019) . Search for Higgs boson decays into a pair of light bosons in the bbμμ final state in pp collision at √s=13TeV with the ATLAS detector. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 790, 1-21.
http://dx.doi.org/10.1016/j.physletb.2018.10.073
---------- CHICAGO ----------
Aaboud, M. "Search for Higgs boson decays into a pair of light bosons in the bbμμ final state in pp collision at √s=13TeV with the ATLAS detector" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 790 (2019) : 1-21.
http://dx.doi.org/10.1016/j.physletb.2018.10.073
---------- MLA ----------
Aaboud, M. "Search for Higgs boson decays into a pair of light bosons in the bbμμ final state in pp collision at √s=13TeV with the ATLAS detector" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 790, 2019, pp. 1-21.
http://dx.doi.org/10.1016/j.physletb.2018.10.073
---------- VANCOUVER ----------
Aaboud, M. Search for Higgs boson decays into a pair of light bosons in the bbμμ final state in pp collision at √s=13TeV with the ATLAS detector. Phys Lett Sect B Nucl Elem Part High-Energy Phys. 2019;790:1-21.
http://dx.doi.org/10.1016/j.physletb.2018.10.073