Navegar

Colección

Datos Estadísticas

Artículo

Estamos trabajando para incorporar este artículo al repositorio
Consulte el artículo en la página del editor
Consulte la política de Acceso Abierto del editor

Abstract:

A search for heavy resonances decaying into a Higgs boson (H) and a new particle (X) is reported, utilizing 36.1 fb −1 of proton–proton collision data at s=13TeV collected during 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider. The particle X is assumed to decay to a pair of light quarks, and the fully hadronic final state XH→qq¯ ′ bb¯ is analysed. The search considers the regime of high XH resonance masses, where the X and H bosons are both highly Lorentz-boosted and are each reconstructed using a single jet with large radius parameter. A two-dimensional phase space of XH mass versus X mass is scanned for evidence of a signal, over a range of XH resonance mass values between 1 TeV and 4 TeV, and for X particles with masses from 50 GeV to 1000 GeV. All search results are consistent with the expectations for the background due to Standard Model processes, and 95% CL upper limits are set, as a function of XH and X masses, on the production cross-section of the XH→qq¯ ′ bb¯ resonance. © 2018 The Author(s)

Registro:

Documento: Artículo
Título:A search for resonances decaying into a Higgs boson and a new particle X in the XH → qqbb final state with the ATLAS detector
Autor:Aaboud, M. et al.
Este artículo contiene 2883 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2883 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Año:2018
Volumen:779
Página de inicio:24
Página de fin:45
DOI: http://dx.doi.org/10.1016/j.physletb.2018.01.042
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_v779_n_p24_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. , arXiv:1207.7214 [hep-ex]
  • 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 [hep-ex]
  • Search for new resonances decaying to a W or Z boson and a Higgs boson in the ℓ + ℓ − bb¯ ℓvbb¯ and νν¯bb¯ channels with pp collisions at s=13 TeV with the ATLAS detector (2017) Phys. Lett. B, 765, p. 32. , arXiv:1607.05621 [hep-ex]
  • Search for heavy resonances decaying to a W or Z boson and a Higgs boson in the qq¯ (′) bb¯ final state in pp collisions at s=13TeV with the ATLAS detector (2017), arXiv:1707.06958 [hep-ex]; Search for heavy resonances that decay into a vector boson and a Higgs boson in hadronic final states at s=13TeV (2017) Eur. Phys. J. C, 77, p. 636. , arXiv:1707.01303 [hep-ex]
  • Search for a massive resonance decaying into a Higgs boson and a W or Z boson in hadronic final states in proton–proton collisions at s=8TeV (2016) J. High Energy Phys., 2. , arXiv:1506.01443 [hep-ex]
  • Search for massive WH resonances decaying into the ℓνbb¯ final state at s=8TeV (2016) Eur. Phys. J. C, 76, p. 237. , arXiv:1601.06431 [hep-ex]
  • Search for narrow high-mass resonances in proton–proton collisions at s=8TeV decaying to a Z and a Higgs boson (2015) Phys. Lett. B, 748, p. 255. , arXiv:1502.04994 [hep-ex]
  • Search for pair production of Higgs bosons in the bb¯bb¯ final state using proton–proton collisions at s=13TeV with the ATLAS detector (2016) Phys. Rev. D, 94. , arXiv:1606.04782 [hep-ex]
  • Search for heavy resonances decaying to two Higgs bosons in final states containing four b quarks (2016) Eur. Phys. J. C, 76, p. 371. , arXiv:1602.08762 [hep-ex]
  • Search for resonant pair production of Higgs bosons decaying to two bottom quark–antiquark pairs in proton–proton collisions at 8 TeV (2015) Phys. Lett. B, 749, p. 560. , arXiv:1503.04114 [hep-ex]
  • Search for new phenomena in dijet events using 37 fb −1 of pp collision data collected at s=13TeV with the ATLAS detector (2017) Phys. Rev. D, 96. , arXiv:1703.09127 [hep-ex]
  • Search for dijet resonances in proton–proton collisions at s=13TeV and constraints on dark matter and other models (2017) Phys. Lett. B, 769, p. 520. , arXiv:1611.03568 [hep-ex]
  • Search for low mass vector resonances decaying into quark–antiquark pairs in proton–proton collisions at s=13TeV (2017), arXiv:1710.00159 [hep-ex]; Galloway, J., Kagan, A.L., Martin, A., A UV complete partially composite-pNGB Higgs (2017) Phys. Rev. D, 95. , arXiv:1609.05883 [hep-ph]
  • Ellwanger, U., Rodriguez-Vazquez, M., Simultaneous search for extra light and heavy Higgs bosons via cascade decays (2017), arXiv:1707.08522 [hep-ph]; Agashe, K.S., LHC signals from cascade decays of warped vector resonances (2017) J. High Energy Phys., 5. , arXiv:1612.00047 [hep-ph]
  • Pappadopulo, D., Thamm, A., Torre, R., Wulzer, A., Heavy vector triplets: bridging theory and data (2014) J. High Energy Phys., 9. , arXiv:1402.4431 [hep-ph]
  • de Blas, J., Lizana, J.M., Perez-Victoria, M., Combining searches of Z ′ and W ′ bosons (2013) J. High Energy Phys., 1. , arXiv:1211.2229 [hep-ph]
  • The ATLAS experiment at the CERN Large Hadron Collider (2008) J. Instrum., 3
  • ATLAS insertable B-layer technical design report https://cds.cern.ch/record/1291633, ATLAS-TDR-19, URL; ATLAS insertable B-layer technical design report addendum https://cds.cern.ch/record/1451888, ATLAS-TDR-19-ADD-1, URL; Performance of the ATLAS trigger system in 2015 (2017) Eur. Phys. J. C, 77, p. 317. , arXiv:1611.09661 [hep-ex]
  • 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. , arXiv:1405.0301 [hep-ph]
  • Sjöstrand, T., Mrenna, S., Skands, P.Z., A brief introduction to PYTHIA 8.1 (2008) Comput. Phys. Commun., 178, p. 852. , arXiv:0710.3820 [hep-ph]
  • Ball, R.D., Parton distributions with LHC data (2013) Nucl. Phys. B, 867, p. 244. , arXiv:1207.1303 [hep-ph]
  • ATLAS Pythia 8 tunes to 7 TeV data (2014), https://cds.cern.ch/record/1966419, ATL-PHYS-PUB-2014-021, URL; Frixione, S., Webber, B.R., Matching NLO QCD computations and parton shower simulations (2002) J. High Energy Phys., 6. , arXiv:hep-ph/0204244
  • Lai, H.-L., New parton distributions for collider physics (2010) Phys. Rev. D, 82. , arXiv:1007.2241 [hep-ph]
  • Sjöstrand, T., Mrenna, S., Skands, P.Z., (2006) J. High Energy Phys., 5. , arXiv:hep-ph/0603175 PYTHIA 6.4 Physics and Manual
  • Skands, P.Z., Tuning Monte Carlo generators: the Perugia tunes (2010) Phys. Rev. D, 82. , arXiv:1005.3457 [hep-ph]
  • Pumplin, J., New generation of parton distributions with uncertainties from global QCD analysis (2002) J. High Energy Phys., 7. , arXiv:hep-ph/0201195
  • 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. , arXiv:1112.5675 [hep-ph]
  • Gleisberg, T., Event generation with SHERPA 1.1 (2009) J. High Energy Phys., 2. , arXiv:0811.4622 [hep-ph]
  • 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. , arXiv:hep-ph/0312266
  • Lange, D.J., The EvtGen particle decay simulation package (2001) Nucl. Instrum. Methods A, 462, p. 152
  • Detector level leading track underlying event distributions at 13 TeV measured in ATLAS (2015), https://cds.cern.ch/record/2037684, ATL-PHYS-PUB-2015-019, URL; Agostinelli, S., GEANT4: a simulation toolkit (2003) Nucl. Instrum. Methods A, 506, p. 250
  • The ATLAS simulation infrastructure (2010) Eur. Phys. J. C, 70, p. 823. , arXiv:1005.4568 [hep-ex]
  • Cacciari, M., Salam, G.P., Soyez, G., The anti-k t jet clustering algorithm (2008) J. High Energy Phys., 4. , arXiv:0802.1189 [hep-ph]
  • Cacciari, M., Salam, G.P., Soyez, G., FastJet user manual (2012) Eur. Phys. J. C, 72, p. 1896. , arXiv:1111.6097 [hep-ph]
  • Topological cell clustering in the ATLAS calorimeters and its performance in LHC Run 1 (2016), arXiv:1603.02934 [hep-ex]; Expected performance of boosted Higgs (→bb¯) boson identification with the ATLAS detector at s=13TeV (2015), https://cds.cern.ch/record/2042155, ATL-PHYS-PUB-2015-035, URL; Krohn, D., Thaler, J., Wang, L.-T., Jet trimming (2010) J. High Energy Phys., 2. , arXiv:0912.1342 [hep-ph]
  • Catani, S., Dokshitzer, Y.L., Seymour, M.H., Webber, B.R., Longitudinally invariant K t clustering algorithms for hadron hadron collisions (1993) Nucl. Phys. B, 406, p. 187
  • Jet mass reconstruction with the ATLAS detector in early Run 2 data (2016), https://cds.cern.ch/record/2200211, ATLAS-CONF-2016-035, URL; Muon reconstruction performance of the ATLAS detector in proton–proton collision data at s=13TeV (2016) Eur. Phys. J. C, 76, p. 292. , arXiv:1603.05598 [hep-ex]
  • Boosted Higgs (→bb¯) boson identification with the ATLAS detector at s=13TeV (2016), https://cds.cern.ch/record/2206038, ATLAS-CONF-2016-039, URL; Flavor tagging with track-jets in boosted topologies with the ATLAS detector (2014), https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PUBNOTES/ATL-PHYS-PUB-2014-013, ATL-PHYS-PUB-2014-013, URL; 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 b-jet identification in the ATLAS experiment (2016) J. Instrum., 11. , arXiv:1512.01094 [hep-ex]
  • Larkoski, A.J., Moult, I., Neill, D., Power counting to better jet observables (2014) J. High Energy Phys., 12. , arXiv:1409.6298 [hep-ph]
  • Larkoski, A.J., Moult, I., Neill, D., Analytic boosted boson discrimination (2016) J. High Energy Phys., 5. , arXiv:1507.03018 [hep-ph]
  • Performance of top quark and W boson tagging in Run 2 with ATLAS (2017), https://cds.cern.ch/record/2281054, ATLAS-CONF-2017-064, URL; Identification of boosted, hadronically decaying W bosons and comparisons with ATLAS data taken at s=8TeV (2016) Eur. Phys. J. C, 76, p. 154. , arXiv:1510.05821 [hep-ex]
  • Identification of boosted, hadronically-decaying W and Z bosons in s=13TeV Monte Carlo simulations for ATLAS (2015), https://cds.cern.ch/record/2041461, ATL-PHYS-PUB-2015-033, URL; Electron efficiency measurements with the ATLAS detector using the 2015 LHC proton–proton collision data (2016), https://cds.cern.ch/record/2157687, ATLAS-CONF-2016-024, URL; Verkerke, W., Kirkby, D., The RooFit toolkit for data modeling (2003), arXiv:physics/0306116 [physics.data-an]; Baak, M., Gadatsch, S., Harrington, R., Verkerke, W., Interpolation between multi-dimensional histograms using a new non-linear moment morphing method (2015) Nucl. Instrum. Methods A, 771, p. 39. , arXiv:1410.7388 [physics.data-an]
  • Jet energy measurement and its systematic uncertainty in proton–proton collisions at s=7TeV with the ATLAS detector (2015) Eur. Phys. J. C, 75, p. 17. , arXiv:1406.0076 [hep-ex]
  • Measurement of the differential cross-section of highly boosted top quarks as a function of their transverse momentum in s=8TeV proton–proton collisions using the ATLAS detector (2016) Phys. Rev. D, 93. , arXiv:1510.03818 [hep-ex]
  • Luminosity determination in pp collisions at s=8TeV using the ATLAS detector at the LHC (2016) Eur. Phys. J. C, 76, p. 653. , arXiv:1608.03953 [hep-ex]
  • Performance of jet substructure techniques for large-R jets in proton–proton collisions at s=7TeV using the ATLAS detector (2013) J. High Energy Phys., 9. , arXiv:1306.4945 [hep-ex]
  • 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 [physics.data-an] Erratum
  • Read, A.L., Presentation of search results: the CL(s) technique (2002) J. Phys. G, 28, p. 2693
  • ATLAS computing acknowledgements 2016–2017 https://cds.cern.ch/record/2202407, ATL-GEN-PUB-2016-002, URL

Citas:

---------- APA ----------
(2018) . A search for resonances decaying into a Higgs boson and a new particle X in the XH → qqbb final state with the ATLAS detector. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 779, 24-45.
http://dx.doi.org/10.1016/j.physletb.2018.01.042
---------- CHICAGO ----------
Aaboud, M. "A search for resonances decaying into a Higgs boson and a new particle X in the XH → qqbb final state with the ATLAS detector" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 779 (2018) : 24-45.
http://dx.doi.org/10.1016/j.physletb.2018.01.042
---------- MLA ----------
Aaboud, M. "A search for resonances decaying into a Higgs boson and a new particle X in the XH → qqbb final state with the ATLAS detector" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 779, 2018, pp. 24-45.
http://dx.doi.org/10.1016/j.physletb.2018.01.042
---------- VANCOUVER ----------
Aaboud, M. A search for resonances decaying into a Higgs boson and a new particle X in the XH → qqbb final state with the ATLAS detector. Phys Lett Sect B Nucl Elem Part High-Energy Phys. 2018;779:24-45.
http://dx.doi.org/10.1016/j.physletb.2018.01.042