Search for a heavy resonance decaying into a Z boson and a vector boson in the vvqq final state

: A search is presented for a heavy resonance decaying into either a pair of Z bosons or a Z boson and a W boson (ZZ or WZ), with a Z boson decaying into a pair of neutrinos and the other boson decaying hadronically into two collimated quarks that are reconstructed as a highly energetic large-cone jet. The search is performed using the data collected with the CMS detector at the CERN LHC during 2016 in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to a total integrated luminosity of 35.9 fb (cid:0) 1 . No excess is observed in data with regard to background expectations. Results are interpreted in scenarios of physics beyond the standard model. Limits at 95% con(cid:12)dence level on production cross sections are set at 0.9 fb (63 fb) for spin-1 W 0 bosons, included in the heavy vector triplet model, with mass 4.0 TeV (1.0 TeV), and at 0.5 fb (40 fb) for spin-2 bulk gravitons with mass 4.0 TeV (1.0 TeV). Lower limits are set on the masses of W 0 bosons in the context of two versions of the heavy vector triplet model of 3.1 TeV and 3.4 TeV, respectively.

[1]  C. Collaboration,et al.  Particle-flow reconstruction and global event description with the CMS detector , 2017, 1706.04965.

[2]  J. Latorre,et al.  Parton distributions from high-precision collider data , 2017, The European Physical Journal C.

[3]  Khachatryan,et al.  Jet energy scale and resolution in the CMS experiment in pp collisions at 8 TeV , 2016, 1607.03663.

[4]  V. M. Ghete,et al.  Event generator tunes obtained from underlying event and multiparton scattering measurements , 2015, 1512.00815.

[5]  J. Huston,et al.  PDF4LHC recommendations for LHC Run II , 2015, 1510.03865.

[6]  Stefan Kallweit,et al.  NLO QCD+EW automation and precise predictions for V+multijet production , 2015, 1505.05704.

[7]  E. Re,et al.  Top-pair production and decay at NLO matched with parton showers , 2014, 1412.1828.

[8]  P. Harris,et al.  Pileup per particle identification , 2014, 1407.6013.

[9]  R. Frederix,et al.  The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations , 2014, 1405.0301.

[10]  D. Pappadopulo,et al.  Heavy vector triplets: bridging theory and data , 2014, 1402.4431.

[11]  G. Soyez,et al.  Soft drop , 2014, 1402.2657.

[12]  Csaba Csáki,et al.  Composite Higgses , 2014, The European Physical Journal C.

[13]  G. Salam,et al.  Towards an understanding of jet substructure , 2013, 1307.0007.

[14]  R. Frederix,et al.  Merging meets matching in MC@NLO , 2012, 1209.6215.

[15]  M. Cacciari,et al.  FastJet user manual , 2011, 1111.6097.

[16]  Duccio Pappadopulo,et al.  On the effect of resonances in composite Higgs phenomenology , 2011, 1109.1570.

[17]  C. Collaboration,et al.  Determination of Jet Energy Calibration and Transverse Momentum Resolution in CMS , 2011, 1107.4277.

[18]  C. Grojean,et al.  A weakly constrained W′ at the early LHC , 2011, 1103.2761.

[19]  J. Thaler,et al.  Identifying boosted objects with N-subjettiness , 2010, 1011.2268.

[20]  E. Re Single-top Wt-channel production matched with parton showers using the POWHEG method , 2010, 1009.2450.

[21]  K. Cranmer,et al.  Asymptotic formulae for likelihood-based tests of new physics , 2010, 1007.1727.

[22]  E. Re,et al.  A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX , 2010, 1002.2581.

[23]  João Paulo Teixeira,et al.  The CMS experiment at the CERN LHC , 2008 .

[24]  M. Gigg,et al.  Herwig++ physics and manual , 2008, 0803.0883.

[25]  M. Cacciari,et al.  The anti-$k_t$ jet clustering algorithm , 2008, 0802.1189.

[26]  David Atwood,et al.  Search for RS gravitons via WLWL decays , 2007, 0711.3175.

[27]  Peter Skands,et al.  A brief introduction to PYTHIA 8.1 , 2007, Comput. Phys. Commun..

[28]  P. Nason,et al.  Matching NLO QCD computations with Parton Shower simulations: the POWHEG method , 2007, 0709.2092.

[29]  Jared Kaplan,et al.  Searching for the Kaluza-Klein Graviton in Bulk RS Models , 2007, hep-ph/0701150.

[30]  P. Nason A new method for combining NLO QCD with shower Monte Carlo algorithms , 2004, hep-ph/0409146.

[31]  J. Varela,et al.  The CMS trigger system , 2004, 1609.02366.

[32]  A. Read Presentation of search results: the CLs technique , 2002 .

[33]  L. Randall,et al.  An Alternative to compactification , 1999, hep-th/9906064.

[34]  L. Randall,et al.  A Large mass hierarchy from a small extra dimension , 1999, hep-ph/9905221.

[35]  T. Junk,et al.  Confidence Level Computation for Combining Searches with Small Statistics , 1999, hep-ex/9902006.

[36]  T. Wengler,et al.  Hadronization Corrections to Jet Cross Sections in Deep-Inelastic Scattering , 1998, hep-ph/9907280.

[37]  W. Keung,et al.  Gauge model with light W and Z bosons , 1980 .

[38]  A. Dell'Acqua,et al.  Geant4—a simulation toolkit , 2003 .

[39]  Preprint typeset in JHEP style.- PAPER VERSION Cavendish–HEP–97/06 , 1997 .

[40]  G. Nardulli,et al.  A STUDY OF THE REACTIONS , 1992 .