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Abstract:

A search is performed for Higgs bosons produced in association with top quarks using the diphoton decay mode of the Higgs boson. Selection requirements are optimized separately for leptonic and fully hadronic final states from the top quark decays. The dataset used corresponds to an integrated luminosity of 4.5 fb −1 of proton–proton collisions at a center-of-mass energy of 7 TeV and 20.3 fb −1 at 8 TeV recorded by the ATLAS detector at the CERN Large Hadron Collider. No significant excess over the background prediction is observed and upper limits are set on the tt¯H production cross section. The observed exclusion upper limit at 95% confidence level is 6.7 times the predicted Standard Model cross section value. In addition, limits are set on the strength of the Yukawa coupling between the top quark and the Higgs boson, taking into account the dependence of the tt¯H and tH cross sections as well as the H→γγ branching fraction on the Yukawa coupling. Lower and upper limits at 95% confidence level are set at −1.3 and +8.0 times the Yukawa coupling strength in the Standard Model. © 2014 The Authors

Registro:

Documento: Artículo
Título:Search for H→γγ produced in association with top quarks and constraints on the Yukawa coupling between the top quark and the Higgs boson using data taken at 7 TeV and 8 TeV with the ATLAS detector
Autor:Aad, G. et al.
Este artículo contiene 2897 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2897 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Palabras clave:Diphoton decay; Higgs boson; tH; Top quark; tt¯H; Yukawa coupling
Año:2015
Volumen:740
Página de inicio:222
Página de fin:242
DOI: http://dx.doi.org/10.1016/j.physletb.2014.11.049
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:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v740_n_p222_Aad

Referencias:

  • Englert, F., Brout, R., Broken symmetry and the mass of gauge vector mesons (1964) Phys. Rev. Lett., 13, p. 321
  • Higgs, P.W., Broken symmetries and the masses of gauge bosons (1964) Phys. Rev. Lett., 13, p. 508
  • Guralnik, G., Hagen, C., Kibble, T., Global conservation laws and massless particles (1964) Phys. Rev. Lett., 13, p. 585
  • 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. , arXiv:1207.7235
  • 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. , arXiv:1207.7214
  • Measurements of Higgs boson production and couplings in diboson final states with the ATLAS detector at the LHC (2013) Phys. Lett. B, 726, pp. 88-119. , arXiv:1307.1427
  • Beenakker, W., Higgs radiation off top quarks at the Tevatron and the LHC (2001) Phys. Rev. Lett., 87, p. 201805. , arXiv:hep-ph/0107081
  • Reina, L., Dawson, S., Wackeroth, D., QCD corrections to associated tt¯h production at the Fermilab Tevatron (2002) Phys. Rev. D, 65, p. 053017. , arXiv:hep-ph/0109066
  • Dawson, S., Jackson, C., Orr, L., Reina, L., Wackeroth, D., Associated Higgs production with top quarks at the Large Hadron Collider: NLO QCD corrections (2003) Phys. Rev. D, 68, p. 034022. , arXiv:hep-ph/0305087
  • Garzelli, M., Kardos, A., Papadopoulos, C., Trocsanyi, Z., Standard Model Higgs boson production in association with a top anti-top pair at NLO with parton showering (2011) Europhys. Lett., 96, p. 11001. , arXiv:1108.0387
  • Frederix, R., Scalar and pseudoscalar Higgs production in association with a top–antitop pair (2011) Phys. Lett. B, 701, pp. 427-433. , arXiv:1104.5613
  • Maltoni, F., Paul, K., Stelzer, T., Willenbrock, S., Associated production of Higgs and single top at hadron colliders (2001) Phys. Rev. D, 64, p. 094023. , arXiv:hep-ph/0106293
  • Barger, V., McCaskey, M., Shaughnessy, G., Single top and Higgs associated production at the LHC (2010) Phys. Rev. D, 81, p. 034020. , arXiv:0911.1556
  • Farina, M., Grojean, C., Maltoni, F., Salvioni, E., Thamm, A., Lifting degeneracies in Higgs couplings using single top production in association with a Higgs boson (2013) J. High Energy Phys., 1305, p. 022. , arXiv:1211.3736
  • Biswas, S., Gabrielli, E., Mele, B., Single top and Higgs associated production as a probe of the Htt¯ coupling sign at the LHC (2013) J. High Energy Phys., 1301, p. 088. , arXiv:1211.0499
  • Agrawal, P., Mitra, S., Shivaji, A., Effect of anomalous couplings on the associated production of a single top quark and a Higgs boson at the LHC (2013) J. High Energy Phys., 1312, p. 077. , arXiv:1211.4362
  • Frederix, R., Re, E., Torrielli, P., Single-top t-channel hadroproduction in the four-flavour scheme with POWHEG and aMC@NLO (2012) J. High Energy Phys., 1209, p. 130. , arXiv:1207.5391
  • ATLAS experiment at the CERN Large Hadron Collider (2008) J. Instrum., 3, p. S08003
  • Search for the associated production of the Higgs boson with a top-quark pair (2014) J. High Energy Phys., 1409, p. 087. , arXiv:1408.1682
  • Search for the associated production of the Higgs boson with a top-quark pair (2014) J. High Energy Phys., 1410, p. 106. , (Erratum)
  • Improved luminosity determination in pp collisions at √s=7 TeV using the ATLAS detector at the LHC (2013) Eur. Phys. J. C, 73, p. 2518. , arXiv:1302.4393
  • Bevilacqua, G., HELAC-NLO (2013) Comput. Phys. Commun., 184, pp. 986-997. , arXiv:1110.1499
  • Nason, P., A new method for combining NLO QCD with shower Monte Carlo algorithms (2004) J. High Energy Phys., 411, p. 040. , arXiv:hep-ph/0409146
  • Frixione, S., Nason, P., Oleari, C., Matching NLO QCD computations with parton shower simulations: the POWHEG method (2007) J. High Energy Phys., 711, p. 070. , arXiv:0709.2092
  • 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, p. 043. , arXiv:1002.2581
  • Sjöstrand, T., Mrenna, S., Skands, P., A brief introduction to PYTHIA 8.1 (2008) Comput. Phys. Commun., 178, pp. 852-867
  • Lai, H.-L., New parton distributions for collider physics (2010) Phys. Rev. D, 82, p. 074024. , arXiv:1007.2241
  • New ATLAS event generator tunes to 2010 data (2011), https://cds.cern.ch/record/1345343, Tech. Rep. ATL-PHYS-PUB-2011-008; ATLAS tunes of PYTHIA 6 and Pythia 8 for MC11 (2011), https://cds.cern.ch/record/1363300, Tech. Rep. ATL-PHYS-PUB-2011-009; Maltoni, F., Stelzer, T., MadEvent: automatic event generation with MadGraph (2003) J. High Energy Phys., 302, p. 027. , arXiv:hep-ph/0208156
  • Alwall, J., Frederix, R., Frixione, S., Hirschi, V., Maltoni, F., 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., 1407, p. 079. , arXiv:1405.0301
  • Bähr, M., Herwig++ physics and manual (2008) Eur. Phys. J. C, 58, pp. 639-707. , arXiv:0803.0883
  • Han, T., Ruiz, R., Higgs bosons from top quark decays (2014) Phys. Rev. D, 89, p. 074045. , arXiv:1312.3324
  • Alioli, S., Nason, P., Oleari, C., Re, E., NLO Higgs boson production via gluon fusion matched with shower in POWHEG (2009) J. High Energy Phys., 904, p. 002. , arXiv:0812.0578
  • Nason, P., Oleari, C., NLO Higgs boson production via vector-boson fusion matched with shower in POWHEG (2010) J. High Energy Phys., 1002, p. 037. , arXiv:0911.5299
  • Nadolsky, P.M., Implications of CTEQ global analysis for collider observables (2008) Phys. Rev. D, 78, p. 013004. , arXiv:0802.0007
  • Agostinelli, S., GEANT4: a simulation toolkit (2003) Nucl. Instrum. Methods Phys. Res., Sect. A, Accel. Spectrom. Detect. Assoc. Equip., 506, p. 250
  • ATLAS simulation infrastructure (2010) Eur. Phys. J. C, 70, pp. 823-874. , arXiv:1005.4568
  • Beenakker, W., NLO QCD corrections to tt¯H production in hadron collisions (2003) Nucl. Phys. B, 653, p. 151. , arXiv:hep-ph/0211352
  • Dawson, S., Orr, L., Reina, L., Wackeroth, D., Next-to-leading order QCD corrections to pp→tt¯h at the CERN Large Hadron Collider (2003) Phys. Rev. D, 67, p. 071503. , arXiv:hep-ph/0211438
  • Djouadi, A., Spira, M., Zerwas, P., Production of Higgs bosons in proton colliders: QCD corrections (1991) Phys. Lett. B, 264, p. 440
  • Dawson, S., Radiative corrections to Higgs boson production (1991) Nucl. Phys. B, 359, p. 283
  • Spira, M., Djouadi, A., Graudenz, D., Zerwas, P., Higgs boson production at the LHC (1995) Nucl. Phys. B, 453, p. 17. , arXiv:hep-ph/9504378
  • Harlander, R.V., Kilgore, W.B., Next-to-next-to-leading order Higgs production at hadron colliders (2002) Phys. Rev. Lett., 88, p. 201801. , arXiv:hep-ph/0201206
  • Anastasiou, C., Melnikov, K., Higgs boson production at hadron colliders in NNLO QCD (2002) Nucl. Phys. B, 646, p. 220. , arXiv:hep-ph/0207004
  • Ravindran, V., Smith, J., van Neerven, W.L., NNLO corrections to the total cross-section for Higgs boson production in hadron–hadron collisions (2003) Nucl. Phys. B, 665, p. 325. , arXiv:hep-ph/0302135
  • Catani, S., de Florian, D., Grazzini, M., Nason, P., Soft gluon resummation for Higgs boson production at hadron colliders (2003) J. High Energy Phys., 307, p. 028. , arXiv:hep-ph/0306211
  • Aglietti, U., Bonciani, R., Degrassi, G., Vicini, A., Two loop light fermion contribution to Higgs production and decays (2004) Phys. Lett. B, 595, p. 432. , arXiv:hep-ph/0404071
  • 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. , arXiv:0809.1301
  • Ciccolini, M., Denner, A., Dittmaier, S., Strong and electroweak corrections to the production of Higgs + 2-jets via weak interactions at the LHC (2007) Phys. Rev. Lett., 99, p. 161803. , arXiv:0707.0381
  • 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, p. 013002. , arXiv:0710.4749
  • Arnold, K., VBFNLO: a parton level Monte Carlo for processes with electroweak bosons (2009) Comput. Phys. Commun., 180, p. 1661. , arXiv:0811.4559
  • Bolzoni, P., Maltoni, F., Moch, S.-O., Zaro, M., Higgs production via vector-boson fusion at NNLO in QCD (2010) Phys. Rev. Lett., 105, p. 011801. , arXiv:1003.4451
  • Han, T., Willenbrock, S., QCD correction to the pp→WH and ZH total cross-sections (1991) Phys. Lett. B, 273, p. 167
  • Brein, O., Djouadi, A., Harlander, R., NNLO QCD corrections to the Higgs-strahlung processes at hadron colliders (2004) Phys. Lett. B, 579, p. 149. , arXiv:hep-ph/0307206
  • Ciccolini, M., Dittmaier, S., Krämer, M., Electroweak radiative corrections to associated WH and ZH production at hadron colliders (2003) Phys. Rev. D, 68, p. 073003. , arXiv:hep-ph/0306234
  • Botje, M., The PDF4LHC working group interim recommendations arXiv:1101.0538; Martin, A., Stirling, W., Thorne, R., Watt, G., Parton distributions for the LHC (2009) Eur. Phys. J. C, 63, p. 189. , arXiv:0901.0002
  • Ball, R.D., Impact of heavy quark masses on parton distributions and LHC phenomenology (2011) Nucl. Phys. B, 849, p. 296. , arXiv:1101.1300
  • Djouadi, A., Kalinowski, J., Spira, M., HDECAY: a program for Higgs boson decays in the Standard Model and its supersymmetric extension (1998) Comput. Phys. Commun., 108, p. 56. , arXiv:hep-ph/9704448
  • Bredenstein, A., Denner, A., Dittmaier, S., Weber, M., Precise predictions for the Higgs-boson decay H→WW/ZZ→4 leptons (2006) Phys. Rev. D, 74, p. 013004. , arXiv:hep-ph/0604011
  • Actis, S., Passarino, G., Sturm, C., Uccirati, S., NNLO computational techniques: the cases H→γγ and H→gg (2009) Nucl. Phys. B, 811, p. 182. , arXiv:0809.3667
  • Denner, A., Heinemeyer, S., Puljak, I., Rebuzzi, D., Spira, M., Standard Model Higgs-boson branching ratios with uncertainties (2011) Eur. Phys. J. C, 71, p. 1753. , arXiv:1107.5909
  • Handbook of LHC Higgs Cross Sections: 1. Inclusive observables arXiv:1101.0593 S. Dittmaier, C. Mariotti, G. Passarino, R. Tanaka (Eds.), CERN-2011-002; Handbook of LHC Higgs Cross Sections: 2. Differential distributions arXiv:1201.3084 S. Dittmaier, C. Mariotti, G. Passarino, R. Tanaka (Eds.), CERN-2011-002; Expected photon performance in the ATLAS experiment (2011), https://cds.cern.ch/record/1345329, Tech. Rep. ATLAS-PHYS-PUB-2011-007; Cacciari, M., Salam, G.P., Sapeta, S., On the characterisation of the underlying event (2010) J. High Energy Phys., 1004, p. 065. , arXiv:0912.4926
  • Measurement of the inclusive isolated prompt photon cross section in pp collisions at √s=7 TeV with the ATLAS detector (2011) Phys. Rev. D, 83, p. 052005. , arXiv:1012.4389
  • Measurement of the Higgs boson mass from the H→γγ and H→ZZ ⁎ →4ℓ channels with the ATLAS detector using 25 fb −1 of pp collision data (2014) Phys. Rev. D, 90, p. 052004. , arXiv:1406.3827
  • Electron reconstruction and identification efficiency measurements with the ATLAS detector using the 2011 LHC proton–proton collision data (2014) Eur. Phys. J. C, 74, p. 2941. , arXiv:1404.2240
  • Muon reconstruction efficiency and momentum resolution of the ATLAS experiment in proton–proton collisions at √s=7 TeV in 2010 (2014) Eur. Phys. J. C, 74 (9), p. 3034. , arXiv:1404.4562
  • Cacciari, M., Salam, G.P., Soyez, G., The anti-k(t) jet clustering algorithm (2008) J. High Energy Phys., 804, p. 063. , arXiv:0802.1189
  • Jet energy measurement and its systematic uncertainty in proton–proton collisions at √s=7 TeV with the ATLAS detector (2014) Eur. Phys. J. C, , arXiv:1406.0076 in press
  • Cacciari, M., Salam, G.P., Pileup subtraction using jet areas (2008) Phys. Lett. B, 659, p. 119
  • Commissioning of the ATLAS high-performance b-tagging algorithms in the 7 TeV collision data (2011), https://cdsweb.cern.ch/record/1369219, Tech. Rep. ATLAS-CONF-2011-102; Calibration of the performance of b-tagging for c and light-flavour jets in the 2012 ATLAS data (2014), https://cdsweb.cern.ch/record/1741020, Tech. Rep. ATLAS-CONF-2014-046; Performance of missing transverse momentum reconstruction in ATLAS with 2011 proton–proton collisions at √s=7 TeV (2012), https://cdsweb.cern.ch/record/1463915, Tech. Rep. ATLAS-CONF-2012-101; Oreglia, M., Charmonium spectroscopy from radiative decays of the J/ψ and ψ ′ (1980), Ph.D. thesis; Measurement of Higgs boson production in the diphoton decay channel in pp collisions at center-of-mass energies of 7 and 8 TeV with the ATLAS detector (2014) Phys. Rev. D, , arXiv:1408.7084 in press
  • Performance of the ATLAS trigger system in 2010 (2012) Eur. Phys. J. C, 72, p. 1849. , arXiv:1110.1530
  • Electron and photon energy calibration with the ATLAS detector using LHC Run 1 data (2014) Eur. Phys. J. C, 74 (10), p. 3071. , arXiv:1407.5063
  • Search for top quark decays t→qH with H→γγ using the ATLAS detector (2014) J. High Energy Phys., 1406, p. 008. , arXiv:1403.6293
  • Handbook of LHC Higgs Cross Sections: 3. Higgs properties arXiv:1307.1347 S. Heinemeyer, C. Mariotti, G. Passarino, R. Tanaka (Eds.), CERN-2013-004; A study of heavy flavor quarks produced in association with top quark pairs at √s=7 TeV using the ATLAS detector (2014) Phys. Rev. D, 89, p. 072012. , arXiv:1304.6386
  • Measurement of the cross-section for W boson production in association with b-jets in pp collisions at √s=7 TeV with the ATLAS detector (2013) J. High Energy Phys., 1306, p. 084. , arXiv:1302.2929
  • Read, A.L., Presentation of search results: the CL s technique (2002) J. Phys. G, 28, pp. 2693-2704
  • Cowan, G., Cranmer, K., Gross, E., Vitells, O., Asymptotic formulae for likelihood-based tests of new physics (2011) Eur. Phys. J. C, 71, p. 1554. , arXiv:1007.1727

Citas:

---------- APA ----------
(2015) . Search for H→γγ produced in association with top quarks and constraints on the Yukawa coupling between the top quark and the Higgs boson using data taken at 7 TeV and 8 TeV with the ATLAS detector. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 740, 222-242.
http://dx.doi.org/10.1016/j.physletb.2014.11.049
---------- CHICAGO ----------
Aad, G. "Search for H→γγ produced in association with top quarks and constraints on the Yukawa coupling between the top quark and the Higgs boson using data taken at 7 TeV and 8 TeV with the ATLAS detector" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 740 (2015) : 222-242.
http://dx.doi.org/10.1016/j.physletb.2014.11.049
---------- MLA ----------
Aad, G. "Search for H→γγ produced in association with top quarks and constraints on the Yukawa coupling between the top quark and the Higgs boson using data taken at 7 TeV and 8 TeV with the ATLAS detector" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 740, 2015, pp. 222-242.
http://dx.doi.org/10.1016/j.physletb.2014.11.049
---------- VANCOUVER ----------
Aad, G. Search for H→γγ produced in association with top quarks and constraints on the Yukawa coupling between the top quark and the Higgs boson using data taken at 7 TeV and 8 TeV with the ATLAS detector. Phys Lett Sect B Nucl Elem Part High-Energy Phys. 2015;740:222-242.
http://dx.doi.org/10.1016/j.physletb.2014.11.049