Search for a Heavy Neutral Particle Decaying to e μ , e τ , or μ τ in p p Collisions at s = 8 TeV with the ATLAS Detector

Aad, G.

doi:10.1103/PhysRevLett.115.031801

Title: Search for a Heavy Neutral Particle Decaying to $e μ$ , $e τ$ , or $μ τ$ in $p p$ Collisions at $\sqrt{s} = 8 TeV$ with the ATLAS Detector

Journal Article · Tue Jul 14 00:00:00 EDT 2015 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.115.031801· OSTI ID:1194824

Aad, G. ^[1]

Aix-Marseille University, Marseille (France). et al.

This Letter presents a search for a heavy neutral particle decaying into an opposite-sign different-flavor dilepton pair, e^±μ^∓, e^±τ^∓, or μ^±τ^∓ using 20.3 fb^-1 of pp collision data at √s=8 TeV collected by the ATLAS detector at the LHC. The numbers of observed candidate events are compatible with the standard model expectations. In addition, limits are set on the cross section of new phenomena in two scenarios: the production of ν˜_τ in R-parity-violating supersymmetric models and the production of a lepton-flavor-violating Z' vector boson.

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Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Argonne National Laboratory (ANL), Argonne, IL (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Contributing Organization:: ATLAS Collaboration

Grant/Contract Number:: SC0012704; AC03-76SF00515; AC02-06CH11357; AC02-05CH11231

OSTI ID:: 1194824

Alternate ID(s):: OSTI ID: 1214109; OSTI ID: 1215668; OSTI ID: 1221124; OSTI ID: 1221635; OSTI ID: 1221636; OSTI ID: 1407310

Report Number(s):: BNL-108375-2015-JA; PRLTAO; 031801

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Vol. 115 Journal Issue: 3; ISSN 0031-9007

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 18 works

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References (39)

A search for μ-e conversion in muonic gold Bertl, W.; Engfer, R.; Hermes, E. A. The European Physical Journal C, Vol. 47, Issue 2 https://doi.org/10.1140/epjc/s2006-02582-x	journal	May 2006
The anti- k _t jet clustering algorithm Cacciari, Matteo; Salam, Gavin P.; Soyez, Gregory Journal of High Energy Physics, Vol. 2008, Issue 04 https://doi.org/10.1088/1126-6708/2008/04/063	journal	April 2008
Matching NLO QCD computations and parton shower simulations Frixione, Stefano; Webber, Bryan R. Journal of High Energy Physics, Vol. 2002, Issue 06 https://doi.org/10.1088/1126-6708/2002/06/029	journal	June 2002
Jet energy measurement with the ATLAS detector in proton-proton collisions at $\sqrt{\mathrm{s}}=7\ \mathrm{TeV}$ Aad, G.; Abbott, B.; Abdallah, J. The European Physical Journal C, Vol. 73, Issue 3 https://doi.org/10.1140/epjc/s10052-013-2304-2	journal	March 2013
Improved luminosity determination in pp collisions at $\sqrt {s} = 7\ \mathrm{TeV}$ using the ATLAS detector at the LHC Aad, G.; Abajyan, T.; Abbott, B. The European Physical Journal C, Vol. 73, Issue 8 https://doi.org/10.1140/epjc/s10052-013-2518-3	journal	August 2013
A brief introduction to PYTHIA 8.1 Sjöstrand, Torbjörn; Mrenna, Stephen; Skands, Peter Computer Physics Communications, Vol. 178, Issue 11 https://doi.org/10.1016/j.cpc.2008.01.036	journal	June 2008
The physics of heavy $Z^{'}$ gauge bosons Langacker, Paul Reviews of Modern Physics, Vol. 81, Issue 3 https://doi.org/10.1103/RevModPhys.81.1199	journal	August 2009
Search for high-mass dilepton resonances in $p p$ collisions at $\sqrt{s} = 8 TeV$ with the ATLAS detector Aad, G.; Abbott, B.; Abdallah, J. Physical Review D, Vol. 90, Issue 5 https://doi.org/10.1103/PhysRevD.90.052005	journal	September 2014
Combining QCD and electroweak corrections to dilepton production in the framework of the FEWZ simulation code Li, Ye; Petriello, Frank Physical Review D, Vol. 86, Issue 9 https://doi.org/10.1103/PhysRevD.86.094034	journal	November 2012
PYTHIA 6.4 physics and manual Sjöstrand, Torbjörn; Mrenna, Stephen; Skands, Peter Journal of High Energy Physics, Vol. 2006, Issue 05 https://doi.org/10.1088/1126-6708/2006/05/026	journal	May 2006
Comix, a new matrix element generator Gleisberg, Tanju; Höche, Stefan Journal of High Energy Physics, Vol. 2008, Issue 12 https://doi.org/10.1088/1126-6708/2008/12/039	journal	December 2008
Measurement of the muon reconstruction performance of the ATLAS detector using 2011 and 2012 LHC proton–proton collision data Aad, G.; Abbott, B.; Abdallah, J. The European Physical Journal C, Vol. 74, Issue 11 https://doi.org/10.1140/epjc/s10052-014-3130-x	journal	November 2014
Impact of lepton-flavor violating $Z^{'}$ bosons on muon $g - 2$ and other muon observables Murakami, Brandon Physical Review D, Vol. 65, Issue 5 https://doi.org/10.1103/PhysRevD.65.055003	journal	January 2002
Search for lepton flavor violating τ decays into three leptons Miyazaki, Y.; Adachi, I.; Aihara, H. Physics Letters B, Vol. 660, Issue 3 https://doi.org/10.1016/j.physletb.2007.12.046	journal	February 2008
R-Parity-violating supersymmetry Barbier, R.; Bérat, C.; Besançon, M. Physics Reports, Vol. 420, Issue 1-6 https://doi.org/10.1016/j.physrep.2005.08.006	journal	November 2005
Electron reconstruction and identification efficiency measurements with the ATLAS detector using the 2011 LHC proton–proton collision data Aad, G.; Abajyan, T.; Abbott, B. The European Physical Journal C, Vol. 74, Issue 7 https://doi.org/10.1140/epjc/s10052-014-2941-0	journal	July 2014
A parton shower algorithm based on Catani-Seymour dipole factorisation Schumann, S.; Krauss, F. Journal of High Energy Physics, Vol. 2008, Issue 03 https://doi.org/10.1088/1126-6708/2008/03/038	journal	March 2008
Search for a heavy narrow resonance decaying to eμ, eτ, or μτ with the ATLAS detector in <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd" xmlns:sa="http://www.elsevier.com/xml/common/struct-aff/dtd"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>7</mml:mn><mml:mtext> TeV</mml:mtext></mml:math> pp collisions at the LHC Aad, G.; Abajyan, T.; Abbott, B. Physics Letters B, Vol. 723, Issue 1-3 https://doi.org/10.1016/j.physletb.2013.04.035	journal	June 2013
Top++: A program for the calculation of the top-pair cross-section at hadron colliders Czakon, Michał; Mitov, Alexander Computer Physics Communications, Vol. 185, Issue 11 https://doi.org/10.1016/j.cpc.2014.06.021	journal	November 2014
ALPGEN, a generator for hard multiparton processes in hadronic collisions Mangano, Michelangelo L.; Piccinini, Fulvio; Polosa, Antonio D. Journal of High Energy Physics, Vol. 2003, Issue 07 https://doi.org/10.1088/1126-6708/2003/07/001	journal	July 2003
Search for High-Mass Resonances Decaying to $e μ$ in $p \bar{p}$ Collisions at $\sqrt{s} = 1.96 TeV$ Abulencia, A.; Acosta, D.; Adelman, J. Physical Review Letters, Vol. 96, Issue 21 https://doi.org/10.1103/PhysRevLett.96.211802	journal	May 2006
Single-top production in MC@NLO Frixione, Stefano; Laenen, Eric; Motylinski, Patrick Journal of High Energy Physics, Vol. 2006, Issue 03 https://doi.org/10.1088/1126-6708/2006/03/092	journal	March 2006
Search for Scalar Neutrino Superpartners in $e + μ$ Final States in $p \bar{p}$ Collisions at $\sqrt{s} = 1.96 TeV$ Abazov, V. M.; Abbott, B.; Abolins, M. Physical Review Letters, Vol. 100, Issue 24 https://doi.org/10.1103/PhysRevLett.100.241803	journal	June 2008
Event generation with SHERPA 1.1 Gleisberg, T.; Höche, S.; Krauss, F. Journal of High Energy Physics, Vol. 2009, Issue 02 https://doi.org/10.1088/1126-6708/2009/02/007	journal	February 2009
The ATLAS Simulation Infrastructure Aad, G.; Abbott, B.; Abdallah, J. The European Physical Journal C, Vol. 70, Issue 3 https://doi.org/10.1140/epjc/s10052-010-1429-9	journal	September 2010
Search for a heavy neutral particle decaying into an electron and a muon using 1 fb−1 of ATLAS data Aad, G.; Abbott, B.; Abdallah, J. The European Physical Journal C, Vol. 71, Issue 12 https://doi.org/10.1140/epjc/s10052-011-1809-9	journal	December 2011
Geant4—a simulation toolkit Agostinelli, S.; Allison, J.; Amako, K. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 506, Issue 3 https://doi.org/10.1016/S0168-9002(03)01368-8	journal	July 2003
Search for the decay μ+ → e+e+e− Bertl, W.; Egli, S.; Eichler, R. Nuclear Physics B, Vol. 260, Issue 1 https://doi.org/10.1016/0550-3213(85)90308-6	journal	October 1985
Asymptotic formulae for likelihood-based tests of new physics Cowan, Glen; Cranmer, Kyle; Gross, Eilam The European Physical Journal C, Vol. 71, Issue 2 https://doi.org/10.1140/epjc/s10052-011-1554-0	journal	February 2011
Search for $R$ -Parity Violating Decays of Sneutrinos to $e μ$ , $μ τ$ , and $e τ$ Pairs in $p \bar{p}$ Collisions at $\sqrt{s} = 1.96 TeV$ Aaltonen, T.; Adelman, J.; Álvarez González, B. Physical Review Letters, Vol. 105, Issue 19 https://doi.org/10.1103/PhysRevLett.105.191801	journal	November 2010
Performance of missing transverse momentum reconstruction in proton-proton collisions at $\sqrt{s} = 7~\mbox{TeV}$ with ATLAS Aad, G.; Abbott, B.; Abdallah, J. The European Physical Journal C, Vol. 72, Issue 1 https://doi.org/10.1140/epjc/s10052-011-1844-6	journal	January 2012
Search for Sneutrino Production in $e μ$ Final States in $5.3 {fb}^{- 1}$ of $p \bar{p}$ Collisions at $\sqrt{s} = 1.96 TeV$ Abazov, V. M.; Abbott, B.; Abolins, M. Physical Review Letters, Vol. 105, Issue 19 https://doi.org/10.1103/PhysRevLett.105.191802	journal	November 2010
QCD matrix elements and truncated showers Höche, Stefan; Krauss, Frank; Schumann, Steffen Journal of High Energy Physics, Vol. 2009, Issue 05 https://doi.org/10.1088/1126-6708/2009/05/053	journal	May 2009
HERWIG 6: an event generator for hadron emission reactions with interfering gluons (including supersymmetric processes) Corcella, Gennaro; Knowles, Ian G.; Marchesini, Giuseppe Journal of High Energy Physics, Vol. 2001, Issue 01 https://doi.org/10.1088/1126-6708/2001/01/010	journal	January 2001
The ATLAS Experiment at the CERN Large Hadron Collider Collaboration, The ATLAS; Aad, G.; Abat, E. Journal of Instrumentation, Vol. 3, Issue 08 https://doi.org/10.1088/1748-0221/3/08/S08003	journal	August 2008
Revisiting the QCD Corrections to the R-Parity Violating Processes pp̄ / pp → eμ + X Shao-Ming, Wang; Liang, Han; Wen-Gan, Ma Chinese Physics Letters, Vol. 25, Issue 1 https://doi.org/10.1088/0256-307X/25/1/017	journal	January 2008
Bounds on $R$ -parity violating supersymmetric couplings from leptonic and semileptonic meson decays Dreiner, H. K.; Krämer, M.; O’Leary, Ben Physical Review D, Vol. 75, Issue 11 https://doi.org/10.1103/PhysRevD.75.114016	journal	June 2007
Single-top hadroproduction in association with a W boson Frixione, Stefano; Laenen, Eric; Motylinski, Patrick Journal of High Energy Physics, Vol. 2008, Issue 07 https://doi.org/10.1088/1126-6708/2008/07/029	journal	July 2008
Total Top-Quark Pair-Production Cross Section at Hadron Colliders Through $O (α_{S}^{4})$ Czakon, Michał; Fiedler, Paul; Mitov, Alexander Physical Review Letters, Vol. 110, Issue 25 https://doi.org/10.1103/PhysRevLett.110.252004	journal	June 2013