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Taylor, Frank E. (2012)
Publisher: Elsevier
Languages: English
Types: Article
Subjects: Partícules (Física nuclear), ATLAS, LHC, Research Groups and Centres\Physics\Low Temperature Physics, Faculty of Science\Physics, Standard Model Higgs boson; ATLAS; LHC, CERN, Standard Model, /dk/atira/pure/subjectarea/asjc/3100/3106, QC, 530, Settore FIS/04 - Fisica Nucleare e Subnucleare, High Energy Physics - Experiment, ATLAS; LHC; Standard Model Higgs boson, Standard Model Higgs Boson, Física nuclear, Higgs boson, Nuclear and High Energy Physics
ddc: ddc:530

Classified by OpenAIRE into

arxiv: High Energy Physics::Experiment, High Energy Physics::Phenomenology
An important question at present in particle physics is whether the recently discovered boson with a mass of about 125 GeV is the Standard Model Higgs boson. A Standard Model Higgs boson with a mass of 125 GeV will predominantly decay to b-quark pairs. This work presents the author's contribution to the search with the ATLAS detector for a Standard Model Higgs boson produced in association with a W or Z boson and decaying to b-quark pairs. In order to search for the decay modes ZH → vvb¯b, WH → lvb¯b and ZH → l¯lb¯b, where l is either an electron or muon, events with zero, one or two electrons or muons are considered in 20:3 fb¯1 of 8 TeV LHC data. A Standard Model Higgs boson is not observed decaying to b-quark pairs, although neither is this decay mode ruled out. A Standard Model Higgs boson with a mass of between 110 GeV and 115 GeV is excluded. For mH = 125 GeV the observed (expected) upper limit on the cross- section times the branching ratio is found to be 2.16 (1.07) times the Standard Model prediction. For a Standard Model Higgs boson with a mass of 125 GeV, the best fit signal strength is μ = 1:09 +0:43-0:42 (stat) +0:44-0:37 (syst) = 1:09 +0:61-0:56. The combined results are consistent with a Standard Model Higgs boson with a mass of 125 GeV. The author's own work is presented, including estimation of systematic uncertainties on WH → lvb¯b modelling, and future ATLAS data selection methods for WH → lvb¯b searches. Overviews of underlying theoretical matters and the experimental facilities used are given.
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    • [1] F. Englert, R. Brout, Phys. Rev. Lett. 13 (1964) 321, http://dx.doi.org/10.1103/ PhysRevLett.13.321.
    • [2] P.W. Higgs, Phys. Rev. Lett. 13 (1964) 508, http://dx.doi.org/10.1103/ PhysRevLett.13.508.
    • [3] G. Guralnik, C. Hagen, T. Kibble, Phys. Rev. Lett. 13 (1964) 585, http://dx.doi.org/ 10.1103/PhysRevLett.13.585.
    • [4] ATLAS Collaboration, Phys. Lett. B 710 (2012) 49, arXiv:1202.1408, http://dx. doi.org/10.1016/j.physletb.2012.02.044.
    • [5] CMS Collaboration, Phys. Lett. B 710 (2012) 26, arXiv:1202.1488, http://dx. doi.org/10.1016/j.physletb.2012.02.064.
    • [6] L.E.P. Working, Phys. Lett. B 565 (2003) 61, arXiv:hep-ex/0306033, http://dx. doi.org/10.1016/S0370-2693(03)00614-2.
    • [7] Tevatron New Phenomena, Higgs Working Group, Combined CDF and D0 search for Standard Model Higgs boson production with up to 10.0 fb−1 of data, arXiv:1203.3774.
    • [8] T. Han, S. Willenbrock, Phys. Lett. B 273 (1991) 167, http://dx.doi.org/10.1016/ 0370-2693(91)90572-8.
    • [9] O. Brein, A. Djouadi, R. Harlander, Phys. Lett. B 579 (2004) 149.
    • [10] M.L. Ciccolini, S. Dittmaier, M. Krämer, Phys. Rev. D 68 (2003) 073003.
    • [11] A. Denner, et al., Electroweak corrections to Higgs-strahlung off W/Z bosons at the Tevatron and the LHC with HAWK, arXiv:1112.5142.
    • [12] G. Ferrera, M. Grazzini, F. Tramontano, Phys. Rev. Lett. 107 (2011) 152003, arXiv:1107.1164, http://dx.doi.org/10.1103/PhysRevLett.107.152003.
    • [13] J.M. Butterworth, A.R. Davison, M. Rubin, G.P. Salam, Phys. Rev. Lett. 100 (2008) 242001, arXiv:0802.2470, http://dx.doi.org/10.1103/PhysRevLett.100.242001.
    • [14] CMS Collaboration, Phys. Lett. B 710 (2012) 284, arXiv:1202.4195, http:// dx.doi.org/10.1016/j.physletb.2012.02.085.
    • [15] ATLAS Collaboration, Eur. Phys. J. C 71 (2011) 1630, arXiv:1101.2185 [hep-ex].
    • [16] ATLAS Collaboration, Luminosity determination in pp collisions at √s = 7 TeV using the ATLAS detector in 2011, ATLAS-CONF-2011-116.
    • [17] ATLAS Collaboration, JINST 3 (2008) S08003.
    • [18] T. Sjostrand, S. Mrenna, P.Z. Skands, JHEP 0605 (2006) 026, arXiv:hep-ph/ 0603175, http://dx.doi.org/10.1088/1126-6708/2006/05/026.
    • [19] A. Sherstnev, R. Thorne, Eur. Phys. J. C 55 (2008) 553, arXiv:0711.2473, http:// dx.doi.org/10.1140/epjc/s10052-008-0610-x.
    • [20] ATLAS Collaboration, ATLAS tunes of PYTHIA6 and Pythia8 for MC11, ATLPHYS-PUB-2011-009, http://cdsweb.cern.ch/record/1363300.
    • [21] S. Dittmaier, C. Mariotti, G. Passarino, R. Tanaka (Eds.), LHC Higgs Cross Section Working Group, Handbook of LHC Higgs cross sections: 1. Inclusive observables, CERN-2011-002, arXiv:1101.0593.
    • [22] S. Dittmaier, S. Dittmaier, C. Mariotti, G. Passarino, R. Tanaka, et al., Handbook of LHC Higgs Cross Sections: 2. Differential Distributions. Report of the LHC Higgs Cross Section Working Group, arXiv:1201.3084.
    • [23] A. Djouadi, J. Kalinowski, M. Spira, Comput. Phys. Commun. 108 (1998) 56.
    • [24] S. Alioli, et al., JHEP 0904 (2009) 002, arXiv:0812.0578.
    • [25] P. Nason, C. Oleari, JHEP 1002 (2010) 037, arXiv:0911.5299.
    • [26] C. Oleari, L. Reina, JHEP 1108 (2011) 061, arXiv:1105.4488, http://dx. doi.org/10.1007/JHEP11(2011)040, http://dx.doi.org/10.1007/JHEP08(2011)061.
    • [27] A.D. Martin, et al., Eur. Phys. J. C 63 (2009) 189, arXiv:0901.0002, http://dx. doi.org/10.1140/epjc/s10052-009-1072-5.
    • [28] T. Gleisberg, et al., JHEP 0902 (2009) 007, arXiv:0811.4622, http://dx.doi.org/ 10.1088/1126-6708/2009/02/007.
    • [29] M.L. Mangano, et al., JHEP 0307 (2003) 001.
    • [30] G. Corcella, et al., JHEP 0101 (2001) 010, http://dx.doi.org/10.1088/1126-6708/ 2001/01/010.
    • [31] S. Frixione, B.R. Webber, JHEP 0206 (2002) 029, arXiv:hep-ph/0204244.
    • [32] H.-L. Lai, M. Guzzi, J. Huston, Z. Li, P.M. Nadolsky, et al., Phys. Rev. D 82 (2010) 074024, arXiv:1007.2241, http://dx.doi.org/10.1103/PhysRevD.82.074024.
    • [33] ATLAS Collaboration, New ATLAS event generator tunes to 2010 data, Tech. Rep. ATL-PHYS-PUB-2011-008, CERN, Geneva, 2011, https://cdsweb.cern.ch/record/ 1345343.
    • [34] J.M. Butterworth, J.R. Forshaw, M.H. Seymour, Z. Phys. C 72 (1996) 637, arXiv: hep-ph/9601371, http://dx.doi.org/10.1007/s002880050286.
    • [35] J.M. Campbell, R.K. Ellis, Phys. Rev. D 60 (1999) 113006, arXiv:hep-ph/9905386, http://dx.doi.org/10.1103/PhysRevD.60.113006.
    • [36] T. Binoth, M. Ciccolini, N. Kauer, M. Krämer, JHEP 0612 (2006) 046, arXiv: hep-ph/0611170v1.
    • [37] ATLAS Collaboration, Eur. Phys. J. C 70 (2010) 823, arXiv:1005.4568, http:// dx.doi.org/10.1140/epjc/s10052-010-1429-9.
    • [38] S. Agostinelli, et al., Nucl. Instrum. Meth. A 506 (2003) 250, http://dx. doi.org/10.1016/S0168-9002(03)01368-8.
    • [39] ATLAS Collaboration, Eur. Phys. J C 72 (2012) 1909, arXiv:1110.3174v2, http:// dx.doi.org/10.1140/epjc/s10052-012-1909-1.
    • [40] M. Cacciari, G.P. Salam, G. Soyez, JHEP 0804 (2008) 063, arXiv:0802.1189, http://dx.doi.org/10.1088/1126-6708/2008/04/063.
    • [41] ATLAS Collaboration, Eur. Phys. J. C, submitted for publication, arXiv:1112.6426.
    • [42] ATLAS Collaboration, b-jet tagging calibration on c-jets containing d∗+ mesons, ATLAS-CONF-2012-039, https://cdsweb.cern.ch/record/1435193.
    • [43] ATLAS Collaboration, Measurement of the mistag rate with 5 fb−1 of data collected by the ATLAS detector, ATLAS-CONF-2012-040, https://cdsweb.cern.ch/ record/1435194.
    • [44] ATLAS Collaboration, Measurement of the b-tag efficiency in a sample of jets containing muons with 5 fb−1 of data from the ATLAS detector, ATLAS-CONF2012-043, https://cdsweb.cern.ch/record/1435197.
    • [45] G. Aad, et al., Expected performance of the ATLAS experiment - detector, trigger and physics, arXiv:0901.0512.
    • [46] ATLAS Collaboration, Eur. Phys. J. C 72 (2012) 1844, arXiv:1108.5602.
    • [47] ATLAS Collaboration, Measurement of the missing transverse momentum based on tracks in proton-proton collisions at √s = 900 Gev centre-of-mass energy with the ATLAS detector, ATLAS-CONF-2010-020, https://cdsweb.cern.ch/ record/1277652.
    • [48] M. Aliev, et al., Comput. Phys. Commun. 182 (2011) 1034, arXiv:1007.1327.
    • [49] ATLAS Collaboration, Update on the jet energy scale systematic uncertainty for jets produced in proton-proton collisions at √s = 7 TeV measured with the ATLAS detector, ATLAS-CONF-2011-007, https://cdsweb.cern.ch/record/ 1330713.
    • [50] M. Botje, J. Butterworth, A. Cooper-Sarkar, A. de Roeck, J. Feltesse, et al., The PDF4LHC working group interim recommendations, arXiv:1101.0538.
    • [51] R.D. Ball, et al., Nucl. Phys. B 849 (2011) 296, arXiv:1101.1300, http://dx.doi.org/ 10.1016/j.nuclphysb.2011.03.021.
    • [52] R. Frederix, S. Frixione, V. Hirschi, F. Maltoni, R. Pittau, et al., JHEP 1109 (2011) 061, arXiv:1106.6019, http://dx.doi.org/10.1007/JHEP09(2011)061.
    • [53] A.L. Read, J. Phys. G 28 (2002) 2693.
    • [54] G. Cowan, K. Cranmer, E. Gross, O. Vitells, Eur. Phys. J. C 71 (2011) 1554, arXiv: 1007.1727v2, http://dx.doi.org/10.1140/epjc/s10052-011-1554-0.
    • [55] L. Moneta, et al., in: Proceedings of the 13th International Workshop on Advanced Computing and Analysis Techniques in Physics Research, ACAT2010, in: Proceedings of Science, 2010, arXiv:1009.1003.
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