Search for W' $\to$ tb in proton-proton collisions at $\sqrt{s} = $ 8 TeV

Khachatryan, Vardan

doi:10.1007/JHEP02(2016)122

Title: Search for W' $$\to$$ tb in proton-proton collisions at $$\sqrt{s} = $$ 8 TeV

Journal Article · Thu Feb 18 00:00:00 EST 2016 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/JHEP02(2016)122· OSTI ID:1253005

Khachatryan, Vardan ^[1]

Yerevan Physics Inst. (YerPhI) (Armenia). et al.

A search is performed for the production of a massive W' boson decaying to a top and a bottom quark. The data analysed correspond to an integrated luminosity of 19.7 fb$$^{–1}$$ collected with the CMS detector at the LHC in proton-proton collisions at $$ \sqrt{s}=8 $$ TeV. The hadronic decay products of the top quark with high Lorentz boost from the W' boson decay are detected as a single top flavoured jet. The use of jet substructure algorithms allows the top quark jet to be distinguished from standard model QCD background. Limits on the production cross section of a right-handed W' boson are obtained, together with constraints on the left-handed and right-handed couplings of the W' boson to quarks. The production of a right-handed W' boson with a mass below 2.02 TeV decaying to a hadronic final state is excluded at 95% confidence level. Furthermore, this mass limit increases to 2.15 TeV when both hadronic and leptonic decays are considered, and is the most stringent lower mass limit to date in the tb decay mode.

View Accepted Manuscript (DOE)

Cite

Export

Save

Research Organization:: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States)

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

Contributing Organization:: The CMS Collaboration

Grant/Contract Number:: AC02-07CH11359

OSTI ID:: 1253005

Report Number(s):: FERMILAB-PUB-15-471-CMS; CMS-B2G-12-009; CERN-PH-EP-2015-231; arXiv:1509.06051; 1394163

Journal Information:: Journal of High Energy Physics (Online), Vol. 2016, Issue 2; ISSN 1029-8479

Publisher:: Springer BerlinCopyright Statement

Country of Publication:: United States

Language:: English

Citation Metrics:

Cited by: 14 works

Citation information provided by
Web of Science

References (25)

ATLAS search for a heavy gauge boson decaying to a charged lepton and a neutrino in pp collisions at $\sqrt{s} = 7\ \mathrm{TeV}$ The European Physical Journal C, Vol. 72, Issue 12 https://doi.org/10.1140/epjc/s10052-012-2241-5	journal	December 2012
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
Searches for new physics using the $t \bar{t}$ invariant mass distribution in $p p$ collisions at $\sqrt{s} = 8 TeV$ Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M. Physical Review Letters, Vol. 111, Issue 21 https://doi.org/10.1103/PhysRevLett.111.211804	journal	November 2013
Maximizing boosted top identification by minimizing N-subjettiness Thaler, Jesse; Van Tilburg, Ken Journal of High Energy Physics, Vol. 2012, Issue 2 https://doi.org/10.1007/JHEP02(2012)093	journal	February 2012
Topflavor: a separate SU(2) for the third family Muller, David J.; Nandi, Satyanarayan Physics Letters B, Vol. 383, Issue 3 https://doi.org/10.1016/0370-2693(96)00745-9	journal	September 1996
Search for new resonances decaying via WZ to leptons in proton–proton collisions at $\sqrt{s} = 8 TeV$ Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A. Physics Letters B, Vol. 740 https://doi.org/10.1016/j.physletb.2014.11.026	journal	January 2015
A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX Alioli, Simone; Nason, Paolo; Oleari, Carlo Journal of High Energy Physics, Vol. 2010, Issue 6 https://doi.org/10.1007/JHEP06(2010)043	journal	June 2010
A New Method for Combining NLO QCD with Shower Monte Carlo Algorithms Nason, Paolo Journal of High Energy Physics, Vol. 2004, Issue 11 https://doi.org/10.1088/1126-6708/2004/11/040	journal	November 2004
Little Higgs Theories Schmaltz, Martin; Tucker-Smith, David Annual Review of Nuclear and Particle Science, Vol. 55, Issue 1 https://doi.org/10.1146/annurev.nucl.55.090704.151502	journal	December 2005
Search for <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"><mml:msup><mml:mi>W</mml:mi><mml:mo>′</mml:mo></mml:msup><mml:mo>→</mml:mo><mml:mi>t</mml:mi><mml:mi>b</mml:mi></mml:math> resonances with left- and right-handed couplings to fermions Abazov, V. M.; Abbott, B.; Acharya, B. S. Physics Letters B, Vol. 699, Issue 3 https://doi.org/10.1016/j.physletb.2011.03.066	journal	May 2011
Search for $W^{'}$ Boson Resonances Decaying to a Top Quark and a Bottom Quark Abazov, V. M.; Abbott, B.; Abolins, M. Physical Review Letters, Vol. 100, Issue 21 https://doi.org/10.1103/PhysRevLett.100.211803	journal	May 2008
Search for $W^{'} \to t \bar{b}$ in the lepton plus jets final state in proton–proton collisions at a centre-of-mass energy of $\sqrt{s} = 8 TeV$ with the ATLAS detector Aad, G.; Abbott, B.; Abdallah, J. Physics Letters B, Vol. 743 https://doi.org/10.1016/j.physletb.2015.02.051	journal	April 2015
FastJet user manual: (for version 3.0.2) Cacciari, Matteo; Salam, Gavin P.; Soyez, Gregory The European Physical Journal C, Vol. 72, Issue 3 https://doi.org/10.1140/epjc/s10052-012-1896-2	journal	March 2012
Search for resonant diboson production in the $W W / W Z \to ℓ ν j j$ decay channels with the ATLAS detector at $\sqrt{s} = 7 TeV$ Aad, G.; Abajyan, T.; Abbott, B. Physical Review D, Vol. 87, Issue 11 https://doi.org/10.1103/PhysRevD.87.112006	journal	June 2013
Search for physics beyond the standard model in final states with a lepton and missing transverse energy in proton-proton collisions at $\sqrt{s} = 8 TeV$ Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A. Physical Review D, Vol. 91, Issue 9 https://doi.org/10.1103/PhysRevD.91.092005	journal	May 2015
Search for new physics in final states with a lepton and missing transverse energy in $p p$ collisions at the LHC Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M. Physical Review D, Vol. 87, Issue 7 https://doi.org/10.1103/PhysRevD.87.072005	journal	April 2013
Pileup subtraction using jet areas Cacciari, Matteo; Salam, Gavin P. Physics Letters B, Vol. 659, Issue 1-2 https://doi.org/10.1016/j.physletb.2007.09.077	journal	January 2008
Search for $$W' \rightarrow tb \rightarrow qqbb$$ W ′ → t b → q q b b decays in $$pp$$ p p collisions at $$\sqrt{s}$$ s = 8 TeV with the ATLAS detector Aad, G.; Abbott, B.; Abdallah, J. The European Physical Journal C, Vol. 75, Issue 4 https://doi.org/10.1140/epjc/s10052-015-3372-2	journal	April 2015
Matching NLO QCD computations with parton shower simulations: the POWHEG method Frixione, Stefano; Nason, Paolo; Oleari, Carlo Journal of High Energy Physics, Vol. 2007, Issue 11 https://doi.org/10.1088/1126-6708/2007/11/070	journal	November 2007
Dispelling the <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"><mml:msup><mml:mi>N</mml:mi><mml:mn>3</mml:mn></mml:msup></mml:math> myth for the <mml:math altimg="si2.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"><mml:msub><mml:mi>k</mml:mi><mml:mi>t</mml:mi></mml:msub></mml:math> jet-finder Cacciari, Matteo; Salam, Gavin P. Physics Letters B, Vol. 641, Issue 1 https://doi.org/10.1016/j.physletb.2006.08.037	journal	September 2006
Better jet clustering algorithms Dokshitzer, Yu. L.; Leder, G. D.; Moretti, S. Journal of High Energy Physics, Vol. 1997, Issue 08 https://doi.org/10.1088/1126-6708/1997/08/001	journal	August 1997
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
Description and performance of track and primary-vertex reconstruction with the CMS tracker Collaboration, The CMS Journal of Instrumentation, Vol. 9, Issue 10 https://doi.org/10.1088/1748-0221/9/10/P10009	journal	October 2014
Search for <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"><mml:mi>t</mml:mi><mml:mover accent="true"><mml:mi>t</mml:mi><mml:mo>¯</mml:mo></mml:mover></mml:math> resonances in the lepton plus jets final state in <mml:math altimg="si2.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"><mml:mi>p</mml:mi><mml:mover accent="true"><mml:mi>p</mml:mi><mml:mo>¯</mml:mo></mml:mover></mml:math> collisions at <mml:math altimg="si3.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"><mml:msqrt><mml:mi>s</mml:mi></mml:msqrt><mml:mo>=</mml:mo><mml:mn>1.96</mml:mn><mml:mspace width="0.2em"/><mml:mtext>TeV</mml:mtext></mml:math> Abazov, V. M.; Abbott, B.; Abolins, M. Physics Letters B, Vol. 668, Issue 2 https://doi.org/10.1016/j.physletb.2008.08.027	journal	October 2008
Search for <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"><mml:msup><mml:mi>W</mml:mi><mml:mo>′</mml:mo></mml:msup></mml:math> boson production in the <mml:math altimg="si2.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"><mml:msup><mml:mi>W</mml:mi><mml:mo>′</mml:mo></mml:msup><mml:mo>→</mml:mo><mml:mi>t</mml:mi><mml:mover accent="true"><mml:mi>b</mml:mi><mml:mo>¯</mml:mo></mml:mover></mml:math> decay channel Abazov, V. M.; Abbott, B.; Abolins, M. Physics Letters B, Vol. 641, Issue 6 https://doi.org/10.1016/j.physletb.2006.09.021	journal	October 2006