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Abstract:

A search for the Standard Model Higgs boson has been performed in the H→WW→ℓνjj channel using 4.7 fb −1 of pp collision data recorded at a centre-of-mass energy of s=7 TeV with the ATLAS detector at the Large Hadron Collider. Higgs boson candidates produced in association with zero, one or two jets are included in the analysis to maximize the acceptance for both gluon fusion and weak boson fusion Higgs boson production processes. No significant excess of events is observed over the expected background and limits on the Higgs boson production cross section are derived for a Higgs boson mass in the range 300 GeV<m H <600 GeV. The best sensitivity is reached for m H =400 GeV, where the observed (expected) 95% confidence level upper bound on the cross section for H→WW produced in association with zero or one jet is 2.2 pb (1.9 pb), corresponding to 1.9 (1.6) times the Standard Model prediction. In the Higgs boson plus two jets channel, which is more sensitive to the weak boson fusion process, the observed (expected) 95% confidence level upper bound on the cross section for H→WW production with m H =400 GeV is 0.7 pb (0.6 pb), corresponding to 7.9 (6.5) times the Standard Model prediction. © 2012 CERN

Registro:

Documento: Artículo
Título:Search for the Higgs boson in the H→WW→ℓνjj decay channel at √s=7 TeV with the ATLAS detector
Autor:Aad, G. et al.
Este artículo contiene 2876 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2876 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Palabras clave:Higgs; LHC; TLAS; WW
Año:2012
Volumen:718
Número:2
Página de inicio:391
Página de fin:410
DOI: http://dx.doi.org/10.1016/j.physletb.2012.10.066
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_v718_n2_p391_Aad

Referencias:

  • Englert, F., Brout, R., (1964), 13, p. 321. , Broken symmetry and the mass of gauge vector mesons, Phys. Rev. Lett; Higgs, P.W., (1964), 12, p. 132. , Broken symmetries, massless particles and gauge fields, Phys. Lett; Higgs, P.W., (1964), 13, p. 508. , Broken symmetries and the masses of gauge bosons, Phys. Rev. Lett; Guralnik, G., Hagen, C., Kibble, T., (1964), 13, p. 585. , Global conservation laws and massless particles, Phys. Rev. Lett; Higgs, P.W., (1966), 145, p. 1156. , Spontaneous symmetry breakdown without massless bosons, Phys. Rev; Kibble, T., (1967), 155, p. 1554. , Symmetry breaking in non-Abelian gauge theories, Phys. Rev; Collaboration, A., Combined search for the Standard Model Higgs boson using up to 4.9 fb-1 of pp collision data at √s=7TeV with the ATLAS detector at the LHC, Phys. Lett. B 710 (2012) 49, arXiv:1202.1408; Collaboration, C.M.S., Combined results of searches for the standard model Higgs boson in pp collisions at √s=7TeV, Phys. Lett. B 710 (2012) 26, arXiv:1202.1488; The, L.E.P., Collaborations, Search for the Standard Model Higgs boson at LEP, Phys. Lett. B 565 (2003) 61, arXiv:hep-ex/0306033; The, C.D.F., DØ Collaborations, and the Tevatron New Phenomena and Higgs Working Group, Combined CDF and D0 upper limits on Standard Model Higgs boson production with up to 8.6 fb −1 of data, arXiv:1107.5518; Collaboration, A., (2011), Search for the Higgs boson in the √H→WW→lνjjdecay channel in pp collisions at √s=7TeV with the ATLAS detector, Phys. Rev. Lett. 107 231801, arXiv:1109.3615; Collaboration, A., (2008), The ATLAS Experiment at the CERN Large Hadron Collider, JINST 3 S08003; Collaboration, A., Performance of the ATLAS Trigger System in 2010, Eur. Phys. J. C72 (2012) 1849, arXiv:1110.1530; Collaboration, A., (2010), 70, pp. 823-874. , The ATLAS Simulation Infrastructure, Eur. Phys. J. C; (2003), 506, p. 250. , The GEANT4 Collaboration, S. Agostinelli et al., GEANT 4, A Simulation Toolkit, Nucl. Instr. Meth. A; Collaboration, A., (2010), http://cdsweb.cern.ch/record/1281344., Performance of primary vertex reconstruction in proton-proton collisions at √s=7 TeV in the ATLAS experiment, ATLAS-CONF-2010-069; Collaboration, A., Electron performance measurements with the ATLAS detector using the 2010 LHC proton-proton collision data, Eur. Phys. J. C72 (2012) 001, arXiv:1110.3174; Collaboration, A., (2011), http://cdsweb.cern.ch/record/1345743., Muon reconstruction efficiency in reprocessed 2010 LHC proton-proton collision data recorded with the ATLAS detector, ATLAS-CONF-2011-063; Cacciari, M., Salam, G.P., Soyez, G., (2008), Anti-√k t jet clustering Algorithm, JHEP 04 063, arXiv:0802.1189; Collaboration, A., Jet energy measurement with the ATLAS detector in proton-proton collisions at √s=7TeV, arXiv:1112.6426; Collaboration, A., (2012), http://cdsweb.cern.ch/record/1454675., Measurement of the Mistag Rate of b-tagging algorithms with 5 fb −1 of Data Collected by the ATLAS Detector, ATLAS-CONF-2012-040; Collaboration, A., (2012), http://cdsweb.cern.ch/record/1435197., Measurement of the b-tag Efficiency in a Sample of Jets Containing Muons with 5 √fb −1 of Data from the ATLAS Detector, ATLAS-CONF-2012-043; Collaboration, A., Performance of missing transverse momentum reconstruction in proton-proton collisions at 7 TeV with ATLAS, Eur. Phys. J. C72 1844, arXiv:1108.5602; Mangano, M.L., (2003), ALPGEN, a generator for hard multi-parton processes in hadronic collisions, JHEP 07 001, arXiv:hep-ph/0206293; Frixione, S., Webber, B., Matching NLO QCD and parton showers in heavy flavour production, JHEP 0308 (2003) 007, arXiv:hep-ph/0305252; Corcella, G., (2001), HERWIG 6: An event generator for hadron emission reactions with interfering gluons (including super-symmetric processes), JHEP 01 010, arXiv:hep-ph/0011363; Kersevan, B.P., Richter-Was, E., The Monte Carlo event generator AcerMC version 2.0 with interfaces to PYTHIA 6.2 and HERWIG 6.5, arXiv:hep-ph/0405247; Alwall, J., (2007), MadGraph/MadEvent v4: The New Web Generation, JHEP 09 028, arXiv:0706.2334; Lai, H., (2010), New parton distributions for collider physics, Phys.Rev. D82 074024, arXiv:1007.2241; Nadolsky, P.M., (2008), Implications of CTEQ global analysis for collider observables, Phys. Rev. D78 013004, arXiv:0802.0007; Sherstnev, A., Thorne, R.S., (2008), 55, pp. 553-575. , Parton Distributions for LO Generators, Eur. Phys. J. C; Alioli, S., (2009), 4, p. 002. , NLO Higgs Boson production via gluon fusion matched with shower in POWHEG, JHEP; Nason, P., Oleari, C., (2010), NLO Higgs boson production via vector-boson fusion matched with shower in POWHEG, JHEP 02 037, arXiv:0911.5299; Sjöstr, T., (2006), 5, p. 026. , PYTHIA 6.4 physics and manual, JHEP; LHC Higgs Cross Section Working Group, S. Dittmaier, C. Mariotti, G. Passarino, and R. Tanaka (Eds.), Handbook of LHC Higgs Cross Sections: 2. Differential Distributions, arXiv:1201.3084; LHC Higgs Cross Section Working Group, S. Dittmaier, C. Mariotti, G. Passarino, and R. Tanaka (Eds.), Handbook of LHC Higgs cross sections: 1. Inclusive observables, arXiv:1101.0593; (2010), p. 075021. , Particle Data Group, K. Nakamura, et al., Review of particle physics, J. Phys. G37; Collaboration, A., (2010), http://cdsweb.cern.ch/record/1281311., Jet energy resolution and reconstruction efficiencies from in-situ techniques with the ATLAS detector using proton-proton collisions at a center of mass energy √s=7 TeV, ATLAS-CONF-2010-054; Collaboration, A., (2011), http://cdsweb.cern.ch/record/1356198., Calibrating the b-tag efficiency and mistag rate in 35 pb −1 of data with the ATLAS detector, ATLAS-CONF-2011-089; Collaboration, A., (2011), Luminosity Determination in pp Collisions at s = 7 TeV using the ATLAS Detector at the LHC, Eur.Phys.J. C71 1630, arXiv:1101.2185; Collaboration, A., (2011), http://cdsweb.cern.ch/record/1376384., Luminosity Determination in pp Collisions at √s=7TeV using the ATLAS Detector in 2011, ATLAS-CONF-2011-116; Anastasiou, C., Total cross-section for Higgs boson hadroproduction with anomalous Standard Model interactions, JHEP 2011 (2011) 1, arXiv:1107.0683; Campbell, J.M., Ellis, R.K., Williams, C., (2011), Gluon-gluon contributions to √W + √W − production and Higgs interference effects, JHEP 10 005, arXiv:1107.5569; Cowan, G., (2011), Asymptotic formulae for likelihood-based tests of new physics, Eur. Phys. J. C71 1554, arXiv:1007.1727; Read, A.L., (2002), 28, p. 2693. , Presentation of search results: The CL(s) technique, J. Phys. G

Citas:

---------- APA ----------
(2012) . Search for the Higgs boson in the H→WW→ℓνjj decay channel at √s=7 TeV with the ATLAS detector. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 718(2), 391-410.
http://dx.doi.org/10.1016/j.physletb.2012.10.066
---------- CHICAGO ----------
Aad, G. "Search for the Higgs boson in the H→WW→ℓνjj decay channel at √s=7 TeV with the ATLAS detector" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 718, no. 2 (2012) : 391-410.
http://dx.doi.org/10.1016/j.physletb.2012.10.066
---------- MLA ----------
Aad, G. "Search for the Higgs boson in the H→WW→ℓνjj decay channel at √s=7 TeV with the ATLAS detector" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 718, no. 2, 2012, pp. 391-410.
http://dx.doi.org/10.1016/j.physletb.2012.10.066
---------- VANCOUVER ----------
Aad, G. Search for the Higgs boson in the H→WW→ℓνjj decay channel at √s=7 TeV with the ATLAS detector. Phys Lett Sect B Nucl Elem Part High-Energy Phys. 2012;718(2):391-410.
http://dx.doi.org/10.1016/j.physletb.2012.10.066