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Abstract:

A search for squarks and gluinos in final states containing hadronic jets, missing transverse momentum but no electrons or muons is presented. The data were recorded in 2015 by the ATLAS experiment in √s = 13 TeV proton-proton collisions at the Large Hadron Collider. No excess above the Standard Model background expectation was observed in 3.2 fb −1 of analyzed data. Results are interpreted within simplified models that assume R-parity is conserved and the neutralino is the lightest supersymmetric particle. An exclusion limit at the 95 % confidence level on the mass of the gluino is set at 1.51 TeV for a simplified model incorporating only a gluino octet and the lightest neutralino, assuming the lightest neutralino is massless. For a simplified model involving the strong production of mass-degenerate first- and second-generation squarks, squark masses below 1.03 TeV are excluded for a massless lightest neutralino. These limits substantially extend the region of supersymmetric parameter space excluded by previous measurements with the ATLAS detector. © CERN for the benefit of the ATLAS collaboration 2016.

Registro:

Documento: Artículo
Título:Search for squarks and gluinos in final states with jets and missing transverse momentum at √s = 13 TeV with the ATLAS detector
Autor:Aaboud, M. et al.
Este artículo contiene 2837 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2837 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Año:2016
Volumen:76
Número:7
DOI: http://dx.doi.org/10.1140/epjc/s10052-016-4184-8
Título revista:European Physical Journal C
Título revista abreviado:Eur. Phys. J. C
ISSN:14346044
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346044_v76_n7_p_Aaboud

Referencias:

  • Golfand, Y.A., Likhtman, E.P., Extension of the algebra of Poincare group generators and violation of p invariance (1971) JETP Lett., 13, p. 323. , [Pisma Zh. Eksp. Teor. Fiz. 13:452-455, 1971]
  • Volkov, D.V., Akulov, V.P., Is the neutrino a goldstone particle? Phys (1973) Lett. B, 46, p. 109
  • Wess, J., Zumino, B., Supergauge transformations in fourdimensions (1974) Nucl. Phys. B, 70, p. 39
  • Wess, J., Zumino, B., Supergauge invariant extension of quantum electrodynamics (1974) Nucl. Phys. B, 78, p. 1
  • Ferrara, S., Zumino, B., Supergauge invariant Yang-Mills theories (1974) Nucl. Phys. B, 79, p. 413
  • Salam, A., Strathdee, J.A., Supersymmetry and nonabelian gauges (1974) Phys. Lett. B, 51, pp. 353-355
  • Farrar, G.R., Fayet, P., Phenomenology of the production, decay, and detection of new hadronic states associated with supersymmetry (1978) Phys. Lett. B, 76, p. 575
  • Evans, L., Bryant, P., Machine, L.H.C., (2008) JINST, 3, p. S08001
  • Fayet, P., Supersymmetry and weak, electromagnetic and strong interactions (1976) Phys. Lett. B, 64, p. 159
  • Fayet, P., Spontaneously broken supersymmetric theories of weak, electromagnetic and strong interactions (1977) Phys. Lett. B, 69, p. 489
  • Search for squarks and gluinos using final states with jets and missing transverse momentum with the ATLAS detector in √s = 7 TeV proton-proton collisions (2011) Phys. Lett. B, 701, pp. 186-203. , arXiv:1102.5290 [hep-ex]
  • Search for squarks and gluinos using final states with jets and missing transverse momentum with the ATLAS detector in √s = 7 TeV proton-proton collisions (2012) Phys. Lett. B, 710, pp. 67-85. , arXiv:1109.6572 [hep-ex]
  • Search for squarks and gluinos with the ATLAS detector in final states with jets and missing transverse momentum using 4.7 fb -1 of √s = 7 TeV proton-proton collision data (2013) Phys. Rev. D, 87, p. 012008. , arXiv:1208.0949 [hep-ex]
  • Search for squarks and gluinos with the ATLAS detector in final states with jets and missing transverse momentum using √s = 8 TeV proton-proton collision data (2014) JHEP, 9, p. 176. , arXiv:1405.7875 [hep-ex]
  • Summary of the searches for squarks and gluinos using √s = 8TeVpp collisions with theATLASexperiment at the LHC (2015) JHEP, 10, p. 054. , arXiv:1507.05525 [hep-ex]
  • Search for supersymmetry in hadronic final states using MT2 in pp collisions at √s= 7 TeV (2012) JHEP, 10, p. 018. , arXiv:1207.1798 [hepex]
  • Search for new physics in the multijet and missing transverse momentum final state in proton-proton collisions at √s= 7 TeV (2012) Phys. Rev. Lett., 109, p. 171803. , arXiv:1207.1898 [hep-ex]
  • Search for supersymmetry in hadronic final states with missing transverse energy using the variables αT and bquark multiplicity in pp collisions at 8 TeV (2013) Eur. Phys. J. C, 73, p. 2568. , arXiv:1303.2985[hep-ex]
  • Inclusive search for supersymmetry using the razor variables in pp collisions at √s = 7 TeV (2013) Phys. Rev. Lett., 111, p. 081802. , arXiv:1212.6961 [hep-ex]
  • Search for new physics in the multijet and missing transverse momentum final state in proton-proton collisions at √s = 8 TeV (2014) JHEP, 6, p. 055. , arXiv:1402.4770 [hep-ex]
  • Searches for supersymmetry using the MT2 Variable in hadronic events produced in pp collisions at 8 TeV (2015) JHEP, 5, p. 078. , arXiv:1502.04358 [hep-ex]
  • Search for squarks and gluinos in events with isolated leptons, jets and missing transverse momentum at √s = 8 TeV with the ATLAS detector (2015) JHEP, 4, p. 116. , arXiv:1501.03555 [hep-ex]
  • Alwall, J., Searching for directly decaying gluinos at the tevatron (2008) Phys.Lett., B666, pp. 34-37. , arXiv:0803.0019 [hep-ph]
  • Alwall, J., Schuster, P., Toro, N., Simplified models for a first characterization of new physics at the LHC (2009) Phys. Rev. D, 79, p. 075020. , arXiv:0810.3921 [hep-ph]
  • Alves, D., Simplified models for LHC new physics searches (2012) J. Phys. G Nucl. Part. Phys., 39, p. 105005. , arXiv:1105.2838 [hep-ph]
  • The ATLAS experiment at the CERN Large Hadron Collider (2008) JINST, 3, p. S08003
  • ATLAS insertable B-Layer technical design report (2010) ATLAS-TDR-19, , http://cdsweb.cern.ch/record/1291633
  • Performance of the ATLAS trigger system in 2010 (2012) Eur. Phys. J. C, 72, p. 1849. , arXiv:1110.1530 [hep-ex]
  • Improved luminosity determination in pp collisions at √s = 7 TeVusing theATLAS detector at the LHC (2013) Eur. Phys. J. C, 73, p. 2518. , arXiv:1302.4393 [hep-ex]
  • Alwall, J., Frederix, R., Frixione, S., Hirschi, V., Maltoni, F., Mattelaer, O., Shao, H.-S., Zaro, M., The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations (2014) JHEP, 7, p. 079. , arXiv:1405.0301 [hep-ph]
  • Sjöstrand, T., An introduction to PYTHIA 8.2 (2015) Comput. Phys. Commun., 191, pp. 159-177. , arXiv:1410.3012 [hep-ph]
  • Lönnblad, L., Prestel, S., Matching tree-level matrix elements with interleaved showers (2012) JHEP, 3, p. 019. , arXiv:1109.4829 [hep-ph]
  • (2012) Summary of ATLAS Pythia 8 tunes, , http://cdsweb.cern.ch/record/1474107, ATL-PHYS-PUB-2012-003
  • Ball, R.D., Parton distributions with LHC data (2013) Nucl. Phys. B, 867, pp. 244-289. , arXiv:1207.1303 [hep-ph]
  • Lange, D.J., The EvtGen particle decay simulation package (2001) Nucl. Instrum. Meth. A, 462, p. 152
  • Gleisberg, T., Event generation with SHERPA 1.1 (2009) JHEP, 2, p. 007. , arXiv:0811.4622 [hep-ph]
  • Beenakker, W., Squark and gluino production at hadron colliders (1997) Nucl. Phys. B, 492, pp. 51-103. , arXiv:hep-ph/9610490
  • Kulesza, A., Motyka, L., Threshold resummation for squarkantisquark and gluino-pair production at the LHC (2009) Phys. Rev. Lett., 102, p. 111802. , arXiv:0807.2405 [hep-ph]
  • Kulesza, A., Motyka, L., Soft gluon resummation for the production of gluino-gluino and squarkantisquark pairs at the LHC (2009) Phys. Rev. D, 80, p. 095004. , arXiv:0905.4749 [hep-ph]
  • Beenakker, W., Soft-gluon resummation for squark and gluino hadroproduction (2009) JHEP, 12, p. 041. , arXiv:0909.4418 [hep-ph]
  • Beenakker, W., Squark and gluino hadroproduction (2011) Int. J. Mod. Phys. A, 26, pp. 2637-2664. , arXiv:1105.1110 [hep-ph]
  • Krämer, M., Supersymmetry production cross sections in pp collisions at √s = 7 TeV, , arXiv:1206.2892 [hep-ph]
  • (2016) Monte Carlo Generators for the Production of a W or Z/γ * Boson in Association with Jets at ATLAS in Run 2, , http://cds.cern.ch/record/2120133, ATL-PHYS-PUB-2016-003
  • Gleisberg, T., Höche, S., Comix, a new matrix element generator (2008) JHEP, 12, p. 039. , arXiv: 0808.3674 [hep-ph]
  • Cascioli, F., Maierhofer, P., Pozzorini, S., Scattering amplitudes with open loops (2012) Phys. Rev. Lett., 108, p. 111601. , arXiv:1111.5206 [hep-ph]
  • Schumann, S., Krauss, F., A Parton shower algorithm based on Catani-Seymour dipole factorisation (2008) JHEP, 3, p. 038. , arXiv:0709.1027 [hep-ph]
  • Höche, S., QCD matrix elements + parton showers: The NLO case (2013) JHEP, 4, p. 027. , arXiv:1207.5030 [hep-ph]
  • Höche, S., Krauss, F., Schumann, S., Siegert, F., QCD matrix elements and truncated showers (2009) JHEP, 5, p. 053. , arXiv:0903.1219 [hep-ph]
  • Lai, H.-L., Newparton distributions for collider physics (2010) Phys. Rev. D, 82, p. 074024. , arXiv:1007.2241 [hep-ph]
  • Gavin, F.P.R., Li, Y., Quackenbush, S., FEWZ 2.0: A code for hadronic Z production at nextto- next-to-leading order (2011) Comput. Phys. Commun., 182, pp. 2388-2403. , arXiv:1011.3540 [hep-ph]
  • (2016) Simulation of top quark production for the ATLAS experiment at √s = 13 TeV, , http://cds.cern.ch/record/2120417, ATL-PHYS-PUB-2016-004
  • Alioli, S., A general framework for implementing NLO calculations in shower Monte Carlo programs: The POWHEG BOX (2010) JHEP, 6, p. 043. , arXiv:1002.2581 [hep-ph]
  • Artoisenet, P., Automatic spin-entangled decays of heavy resonances in Monte Carlo simulations (2013) JHEP, 3, p. 015. , arXiv:1212.3460 [hep-ph]
  • Sjöstrand, T., Mrenna, S., Skands, P., PYTHIA 6.4 physics and manual (2006) JHEP, 5, p. 026. , arXiv:hep-ph/0603175
  • Pumplin, J., Newgeneration of parton distributions with uncertainties from global QCD analysis (2002) JHEP, 7, p. 012. , arXiv:hep-ph/0201195 [hep-ph]
  • Skands, P.Z., Tuning Monte Carlo generators: The Perugia tunes (2010) Phys. Rev. D, 82, p. 074018. , arXiv:1005.3457 [hep-ph]
  • Czakon, M., Fiedler, P., Mitov, A., Total top-quark pair-production cross section at Hadron Colliders through O(αS 4 ) (2013) Phys. Rev. Lett., 110, p. 252004. , arXiv:1303.6254 [hep-ph]
  • 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]
  • Aliev, M., HATHOR: HAdronic Top and Heavy quarks crOss section calculatoR (2011) Comput. Phys. Commun., 182, pp. 1034-1046. , arXiv:1007.1327 [hep-ph]
  • Kant, P., HatHor for single top-quark production: Updated predictions and uncertainty estimates for single top-quark production in hadronic collisions (2015) Comput. Phys. Commun., 191, pp. 74-89. , arXiv:1406.4403 [hep-ph]
  • Kidonakis, N., Two-loop soft anomalous dimensions for single top quark associated production with a W- or H- (2010) Phys. Rev. D, 82, p. 054018. , arXiv:1005.4451 [hep-ph]
  • 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, p. 091503. , arXiv:1103.2792 [hep-ph]
  • (2016) Modelling of the t tH and t tV (V = W; Z) processes for √s = 13 TeV ATLAS analyses, , http://cds.cern.ch/record/2120826, ATL-PHYS-PUB-2016-005
  • Lazopoulos, K.M.A., McElmurry, T., Petriello, F., Next-to-leading order QCD corrections to t t Z production at the LHC (2008) Phys. Lett. B, 666, pp. 62-65. , arXiv:0804.2220 [hep-ph]
  • Campbell, J.M., Ellis, R.K., TTw ± production and decay at NLO (2012) JHEP, 7, p. 052. , arXiv:1204.5678 [hep-ph]
  • (2016) Multi-Boson simulation for 13 TeVATLAS analyses, , http://cds.cern.ch/record/2119986, ATL-PHYS-PUB-2016-002
  • The ATLAS simulation infrastructure (2010) Eur. Phys. J. C, 70, p. 823. , arXiv:1005.4568 [physics.ins-det]
  • Agostinelli, S., GEANT4: A simulation toolkit (2003) Nucl. Instrum. Meth. A, 506, pp. 250-303
  • (2010) The simulation principle and performance of the ATLAS fast calorimeter simulation FastCaloSim, , http://cds.cern.ch/record/1300517, ATLPHYS-PUB-2010-013
  • Martin, A.D., Stirling, W.J., Thorne, R.S., Watt, G., Parton distributions for the LHC (2009) Eur. Phys. J. C, 63, pp. 189-285. , arXiv:0901.0002 [hep-ph]
  • Cacciari, M., Salam, G.P., Soyez, G., The anti-kt jet clustering algorithm (2008) JHEP, 4, p. 063. , arXiv:0802.1189 [hep-ph]
  • Cacciari, M., Salam, G.P., Dispelling the N 3 myth for the k t jetfinder (2006) Phys. Lett. B, 641, pp. 57-61. , arXiv:hep-ph/0512210
  • Lampl, W., (2008) Calorimeter clustering algorithms: Description and performance, , http://cdsweb.cern.ch/record/1099735, ATL-LARG-PUB-2008-002, ATL-COMLARG-2008-003
  • Cacciari, M., Salam, G.P., Pileup subtraction using jet areas (2008) Phys. Lett. B, 659, pp. 119-126. , arXiv:0707.1378 [hep-ph]
  • (2015) Performance of pile-up mitigation techniques for jets in pp collisions at √s = 8 TeV using the ATLAS detector, , arXiv:1510.03823 [hep-ex]
  • (2015) Jet calibration and systematic uncertainties for jets reconstructed in the ATLAS detector at √s = 13 TeV, , http://cdsweb.cern.ch/record/2037613, ATL-PHYS-PUB-2015-015
  • (2015) Expected performance of the ATLAS btagging algorithms in Run-2, , http://cdsweb.cern.ch/record/2037697, ATL-PHYS-PUB-2015-022
  • (2015) Commissioning of the ATLAS b-tagging algorithms using t t events in early Run-2 data, , http://cdsweb.cern.ch/record/2047871, ATL-PHYS-PUB-2015-039
  • (2015) Selection of jets produced in proton-proton collisions with the ATLAS detector using 2015 data, , http://cdsweb.cern.ch/record/2037702, ATLASCONF-2015-029
  • Muon reconstruction performance of the ATLAS detector in proton-proton collision data at √s =13 TeV, , arXiv:1603.05598, [hep-ex]
  • (2015) Electron identification measurements in ATLAS using √s = 13 TeV data with 50 ns bunch spacing, , http://cdsweb.cern.ch/record/2048202, ATL-PHYS-PUB-2015-041
  • (2015) Expected performance of missing transverse momentum reconstruction for the ATLAS detector at √s = 13 TeV, , http://cdsweb.cern.ch/record/2037700, ATL-PHYS-PUB-2015-023
  • (2012) Measurements of the photon identification efficiency with the ATLAS detector using 4.9fb -1 of pp collision data collected in 2011, , http://cdsweb.cern.ch/record/1473426, ATLAS-CONF-2012-123
  • Baak, M., HistFitter software framework for statistical data analysis (2015) Eur. Phys. J. C, 75, p. 153. , arXiv:1410.1280 [hep-ex]
  • Read, A.L., Presentation of search results: The CL(s) technique (2002) J. Phys. G, 28, p. 2693
  • Chen, C., New approach to identifying boosted hadronically decaying particles using jet substructure in its center-of-mass frame (2012) Phys. Rev. D, 85, p. 034007. , arXiv:1112.2567 [hep-ph]
  • Jet energy measurement with the ATLAS detector in proton-proton collisions at √s = 7 TeV (2013) Eur. Phys. J. C, 73, p. 2304. , arXiv:1112.6426 [hep-ex]
  • Single hadron response measurement and calorimeter jet energy scale uncertainty with the ATLAS detector at the LHC (2013) Eur. Phys. J. C, 73, p. 2305. , arXiv:1203.1302 [hep-ex]
  • Jet energy resolution in proton-proton collisions at √s = 7 TeVrecorded in 2010 with theATLASdetector (2013) Eur. Phys. J. C, 73, p. 2306. , arXiv:1210.6210 [hep-ex]
  • Frixione, S., Webber, B.R., Matching NLO QCD computations and parton shower simulations (2002) JHEP, 6, p. 029. , arXiv:hep-ph/0204244

Citas:

---------- APA ----------
(2016) . Search for squarks and gluinos in final states with jets and missing transverse momentum at √s = 13 TeV with the ATLAS detector. European Physical Journal C, 76(7).
http://dx.doi.org/10.1140/epjc/s10052-016-4184-8
---------- CHICAGO ----------
Aaboud, M. "Search for squarks and gluinos in final states with jets and missing transverse momentum at √s = 13 TeV with the ATLAS detector" . European Physical Journal C 76, no. 7 (2016).
http://dx.doi.org/10.1140/epjc/s10052-016-4184-8
---------- MLA ----------
Aaboud, M. "Search for squarks and gluinos in final states with jets and missing transverse momentum at √s = 13 TeV with the ATLAS detector" . European Physical Journal C, vol. 76, no. 7, 2016.
http://dx.doi.org/10.1140/epjc/s10052-016-4184-8
---------- VANCOUVER ----------
Aaboud, M. Search for squarks and gluinos in final states with jets and missing transverse momentum at √s = 13 TeV with the ATLAS detector. Eur. Phys. J. C. 2016;76(7).
http://dx.doi.org/10.1140/epjc/s10052-016-4184-8