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 pair-produced third generation scalar leptoquarks is presented, using proton-proton collisions at s=7 TeV at the LHC. The data were recorded with the ATLAS detector and correspond to an integrated luminosity of 4.7 fb -1 . Each leptoquark is assumed to decay to a tau lepton and a b-quark with a branching fraction equal to 100%. No statistically significant excess above the Standard Model expectation is observed. Third generation leptoquarks are therefore excluded at 95% confidence level for masses less than 534GeV. [Figure not available: see fulltext.] © 2013 Cern for the benefit of the ATLAS collaboration.

Registro:

Documento: Artículo
Título:Search for third generation scalar leptoquarks in pp collisions at √s=7 TeV with the ATLAS detector
Autor:Aad, G. et al.
Este artículo contiene 2896 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2896 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Palabras clave:Hadron-Hadron; Scattering
Año:2013
Volumen:2013
Número:6
DOI: http://dx.doi.org/10.1007/JHEP06(2013)033
Título revista:Journal of High Energy Physics
Título revista abreviado:J. High Energy Phys.
ISSN:11266708
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2013_n6_p_Aad

Referencias:

  • Dimopoulos, S.K., Susskind, L., Mass without scalars (1979) Nucl. Phys., 155, p. 237. , 1979NuPhB.155.237D 10.1016/0550-3213(79)90364-X [INSPIRE]
  • Dimopoulos, S., Technicolored signatures (1980) Nucl. Phys., 168, p. 69. , 581446 1980NuPhB.168.69D 10.1016/0550-3213(80)90277-1 [INSPIRE]
  • Eichten, E.J., Lane, K.D., Dynamical breaking of weak interaction symmetries (1980) Phys. Lett., 90, p. 125. , 1980PhLB.90.125E [INSPIRE]
  • Angelopoulos, V., Search for new quarks suggested by the superstring (1987) Nucl. Phys., 292, p. 59. , 1987NuPhB.292.59A 10.1016/0550-3213(87)90637-7 [INSPIRE]
  • Buchmüller, W., Wyler, D., Constraints on SU(5) type leptoquarks (1986) Phys. Lett., 177, p. 377. , 1986PhLB.177.377B [INSPIRE]
  • Pati, J.C., Salam, A., Lepton number as the fourth colour (1974) Phys. Rev., D10, p. 275. , 1974PhRvD.10.275P [Erratum ibid. D 11 (1975) 703] [INSPIRE]
  • Georgi, H., Glashow, S.L., Unity of all elementary particle forces (1974) Phys. Rev. Lett., 32, p. 438. , 1974PhRvL.32.438G 10.1103/PhysRevLett.32.438 [INSPIRE]
  • Kovalenko, S., Schmidt, I., Proton stability in leptoquark models (2003) Phys. Lett., 562, p. 104. , 2003PhLB.562.104K [hep-ph/0210187] [INSPIRE]
  • Buchmüller, W., Ruckl, R., Wyler, D., Leptoquarks in lepton-quark collisions (1987) Phys. Lett., 191, p. 442. , 1987PhLB.191.442B [Erratum ibid. B 448 (1999) 320] [INSPIRE]
  • Search for pair production of third-generation leptoquarks and top squarks in pp collisions at {s}=7 TeV (2013) Phys. Rev. Lett., 110, p. 081801. , CMS collaboration 2013PhRvL.110h1801C 10.1103/PhysRevLett.110.081801 [arXiv:1210.5629] [INSPIRE]
  • Abazov, V., Search for third generation scalar leptoquarks decaying into τ b (2008) Phys. Rev. Lett., 101, p. 241802. , D0 collaboration 2008PhRvL.101x1802A 10.1103/PhysRevLett.101.241802 [arXiv:0806.3527] [INSPIRE]
  • Aaltonen, T., Search for pair production of scalar top quarks decaying to a τ lepton and a b quark in p\\overline{p} collisions at \\sqrt{s}=1.96 TeV (2008) Phys. Rev. Lett., 101, p. 071802. , CDF collaboration 2008PhRvL.101g1802A 10.1103/PhysRevLett.101.071802 [arXiv:0802.3887] [INSPIRE]
  • Search for pair production of first- and second-generation scalar leptoquarks in pp collisions at {s}=7 TeV (2012) Phys. Rev., , 50086 052013, CMS collaboration 2012PhRvD.86e2013C [arXiv:1207.5406] [INSPIRE]
  • Search for first generation scalar leptoquarks in pp collisions at {s}=7 TeV with the ATLAS detector (2012) Phys. Lett., 709, p. 158. , ATLAS collaboration 2012PhLB.709.158A [Erratum ibid. 711 (2012) 442-455] [arXiv:1112.4828] [INSPIRE]
  • Search for second generation scalar leptoquarks in pp collisions at {s}=7 TeV with the ATLAS detector (2012) Eur. Phys. J., p. 2151. , 10072 ATLAS collaboration 2012EPJC.72.2151A [arXiv:1203.3172] [INSPIRE]
  • ATLAS collaboration, The ATLAS experiment at the CERN Large Hadron Collider, 2008 JINST 3 S08003 [ INSPIRE ]; Sjöstrand, T., Mrenna, S., Skands, P.Z., PYTHIA 6.4 physics and manual (2006) JHEP, 5, p. 026. , 2006JHEP.05.026S 10.1088/1126-6708/2006/05/026 [hep-ph/0603175] [INSPIRE]
  • Field, R., Physics at the Tevatron (2008) Acta Phys. Polon., 39, p. 2611. , 2008AcPPB.39.2611F [INSPIRE]
  • Pumplin, J., New generation of parton distributions with uncertainties from global QCD analysis (2002) JHEP, 7, p. 012. , 2002JHEP.07.012P 10.1088/1126-6708/2002/07/012 [hep-ph/0201195] [INSPIRE]
  • Belyaev, A., Leroy, C., Mehdiyev, R., Pukhov, A., Leptoquark single and pair production at LHC with CalcHEP/CompHEP in the complete model (2005) Journal of High Energy Physics, (9), pp. 69-97. , DOI 10.1088/1126-6708/2005/09/005
  • Krämer, M., Pair production of scalar leptoquarks at the CERN LHC (2005) Phys. Rev., p. 057503. , 50071 2005PhRvD.71e7503K [hep-ph/0411038] [INSPIRE]
  • Mangano, M.L., Moretti, M., Piccinini, F., Pittau, R., Polosa, A.D., ALPGEN, a generator for hard multiparton processes in hadronic collisions (2003) JHEP, 7, p. 001. , 2003JHEP.07.001M 10.1088/1126-6708/2003/07/001 [hep-ph/0206293] [INSPIRE]
  • Alwall, J., Comparative study of various algorithms for the merging of parton showers and matrix elements in hadronic collisions (2008) Eur. Phys. J., p. 473. , 10053 2008EPJC.53.473A 10.1140/epjc/s10052-007-0490-5 [arXiv:0706.2569] [INSPIRE]
  • Corcella, G., HERWIG 6: An event generator for hadron emission reactions with interfering gluons (including supersymmetric processes) (2001) JHEP, 1, p. 010. , 2001JHEP.01.010C 10.1088/1126-6708/2001/01/010 [hep-ph/0011363] [INSPIRE]
  • Butterworth, J., Forshaw, J.R., Seymour, M., Multiparton interactions in photoproduction at HERA (1996) Z. Phys., p. 637. , 10072 1996ZPhyC.72.637B [hep-ph/9601371] [INSPIRE]
  • Sherstnev, A., Thorne, R., Parton distributions for LO generators (2008) Eur. Phys. J., p. 553. , 10055 2008EPJC.55.553S 10.1140/epjc/s10052-008-0610-x [arXiv:0711.2473] [INSPIRE]
  • Frixione, S., (2010) The MC@NLO 4.0 Event Generator, , CERN-PH-TH-2010-216 [CAVENDISH-HEP-10-12] [ arXiv:1010.0819 ] [ INSPIRE ]
  • Frixione, S., Webber, B.R., Matching NLO QCD computations and parton shower simulations (2002) JHEP, 6, p. 029. , 2002JHEP.06.029F 10.1088/1126-6708/2002/06/029 [hep-ph/0204244] [INSPIRE]
  • Frixione, S., Nason, P., Webber, B.R., Matching NLO QCD and parton showers in heavy flavor production (2003) JHEP, 8, p. 007. , 2003JHEP.08.007F 10.1088/1126-6708/2003/08/007 [hep-ph/0305252] [INSPIRE]
  • Frixione, S., Laenen, E., Motylinski, P., Webber, B.R., White, C.D., Single-top hadroproduction in association with a W boson (2008) JHEP, 7, p. 029. , 2008JHEP.07.029F 10.1088/1126-6708/2008/07/029 [arXiv:0805.3067] [INSPIRE]
  • Lai, H.-L., New parton distributions for collider physics (2010) Phys. Rev., p. 074024. , 50082 2010PhRvD.82g4024L [arXiv:1007.2241] [INSPIRE]
  • Kersevan, P.B., Richter-Was, E., (2004) The Monte Carlo event generator AcerMC version 2.0 with Interfaces to PYTHIA 6.2 and HERWIG 6.5, , TPJU-2004-6 [ INSPIRE ]
  • Jadach, S., Was, Z., Decker, R., Kuehn, J.H., τ Decay library TAUOLA, version 2.4 (1993) Computer Physics Communications, 76 (3), pp. 361-380. , DOI 10.1016/0010-4655(93)90061-G
  • Barberio, E., Was, Z., PHOTOS: A universal Monte Carlo for QED radiative corrections. Version 2.0 (1994) Comput. Phys. Commun., 79, p. 291. , 1994CoPhC.79.291B 10.1016/0010-4655(94)90074-4 [INSPIRE]
  • Aliev, M., HATHOR: HAdronic Top and Heavy quarks crOss section calculatoR (2011) Comput. Phys. Commun., 182, p. 1034. , 2011CoPhC.182.1034A 1221.81177 10.1016/j.cpc.2010.12.040 [arXiv:1007.1327] [INSPIRE]
  • The ATLAS simulation infrastructure (2010) Eur. Phys. J., p. 823. , 10070 ATLAS collaboration 2010EPJC.70.823A [arXiv:1005.4568] [INSPIRE]
  • Agostinelli, S., GEANT4: A simulation toolkit (2003) Nucl. Instrum. Meth., 506, p. 250. , GEANT4 collaboration 2003NIMPA.506.250G [INSPIRE]
  • ATLAS collaboration, Expected electron performance in the ATLAS experiment, ATL-PHYS-PUB-2011-006 (2011); ATLAS collaboration, Muon reconstruction efficiency in reprocessed 2010 LHC proton-proton collision data recorded with the ATLAS detector, ATLAS-CONF-2011-063 (2011); Cacciari, M., Salam, G.P., Soyez, G., The anti-k t jet clustering algorithm (2008) JHEP, 4, p. 063. , 2008JHEP.04.063C 10.1088/1126-6708/2008/04/063 [arXiv:0802.1189] [INSPIRE]
  • Lampl, W., (2008) Calorimeter clustering algorithms: description and performance, , ATL-LARG-PUB-2008-002
  • ATLAS collaboration, In situ jet pseudorapidity intercalibration of the ATLAS detector using dijet events in s=7 TeV proton-proton 2011 data, ATLAS-CONF-2012-124 (2012); ATLAS collaboration, Commissioning of the ATLAS high-performance b-tagging algorithms in the 7 TeV collision data, ATLAS-CONF-2011-102 (2011); ATLAS collaboration, Performance of the reconstruction and identification of hadronic tau decays with ATLAS, ATLAS-CONF-2011-152 (2011); Roe, B.P., Boosted decision trees, an alternative to artificial neural networks (2005) Nucl. Instrum. Meth., 543, p. 577. , 2005NIMPA.543.577R [physics/0408124] [INSPIRE]
  • ATLAS collaboration, Selection of jets produced in proton-proton collisions with the ATLAS detector using 2011 data, ATLAS-CONF-2012-020 (2012); ATLAS collaboration, Measurement of the mis-identification probability of τ leptons from hadronic jets and from electrons, ATLAS-CONF-2011-113 (2011); ATLAS collaboration, Performance of the ATLAS electron and photon trigger in p-p collisions at s=7 TeV in 2011, ATLAS-CONF-2012-048 (2012); ATLAS collaboration, Performance of the ATLAS muon trigger in 2011, ATLAS-CONF-2012-099 (2012); ATLAS collaboration, Determination of the τ energy scale and the associated systematic uncertainty in proton-proton collisions at s=7 TeV with the ATLAS detector at the LHC in 2011, ATLAS-CONF-2012-054 (2012); ATLAS collaboration, Luminosity determination in pp collisions at s=7 TeV using the ATLAS detector in 2011, ATLAS-CONF-2011-116 (2011); Nason, P., A new method for combining NLO QCD with shower Monte Carlo algorithms (2004) JHEP, 11, p. 040. , 2004JHEP.11.040N 10.1088/1126-6708/2004/11/040 [hep-ph/0409146] [INSPIRE]
  • Frixione, S., Nason, P., Oleari, C., Matching NLO QCD computations with parton shower simulations: The POWHEG method (2007) JHEP, 11, p. 070. , 2007JHEP.11.070F 10.1088/1126-6708/2007/11/070 [arXiv:0709.2092] [INSPIRE]
  • (2009) Expected performance of the ATLAS experiment: detector, trigger and physics, , ATLAS collaboration CERN-OPEN-2008-020 [ arXiv:0901.0512 ] [ INSPIRE ]
  • Badger, S., Campbell, J.M., Ellis, R., QCD corrections to the hadronic production of a heavy quark pair and a W-boson including decay correlations (2011) JHEP, 3, p. 027. , 2011JHEP.03.027B 10.1007/JHEP03(2011)027 [arXiv:1011.6647] [INSPIRE]
  • Campbell, J.M., Production of a Z boson and two jets with one heavy-quark tag (2006) Phys. Rev., p. 054007. , 50073 2006PhRvD.73e4007C [Erratum ibid. D 77 (2008) 019903] [hep-ph/0510362] [INSPIRE]
  • Read, A.L., Presentation of search results: The CL(s) technique (2002) J. Phys., 28, p. 2693. , 1959217 2002JPhG.28.2693R [INSPIRE]

Citas:

---------- APA ----------
(2013) . Search for third generation scalar leptoquarks in pp collisions at √s=7 TeV with the ATLAS detector. Journal of High Energy Physics, 2013(6).
http://dx.doi.org/10.1007/JHEP06(2013)033
---------- CHICAGO ----------
Aad, G. "Search for third generation scalar leptoquarks in pp collisions at √s=7 TeV with the ATLAS detector" . Journal of High Energy Physics 2013, no. 6 (2013).
http://dx.doi.org/10.1007/JHEP06(2013)033
---------- MLA ----------
Aad, G. "Search for third generation scalar leptoquarks in pp collisions at √s=7 TeV with the ATLAS detector" . Journal of High Energy Physics, vol. 2013, no. 6, 2013.
http://dx.doi.org/10.1007/JHEP06(2013)033
---------- VANCOUVER ----------
Aad, G. Search for third generation scalar leptoquarks in pp collisions at √s=7 TeV with the ATLAS detector. J. High Energy Phys. 2013;2013(6).
http://dx.doi.org/10.1007/JHEP06(2013)033