2014

Measurement of jet multiplicity distributions in t t-bar production in pp collisions at sqrt(s) = 7 TeV

CMS Collaboration

Understand

The normalised differential top quark-antiquark production cross section is measured as a function of the jet multiplicity in proton-proton collisions at a centre-of-mass energy of 7 TeV at the LHC with the CMS detector.

The measurement is performed in both the dilepton and lepton + jets decay channels using data corresponding to an integrated luminosity of 5.0 inverse femtobarns.
Using a procedure to associate jets to decay products of the top quarks, the differential cross section of the t t-bar production is determined as a function of the additional jet multiplicity in the lepton + jets channel.
Furthermore, the fraction of events with no additional jets is measured in the dilepton channel, as a function of the threshold on the jet transverse momentum.

Built on

A. Höcker and V. Kartvelishvili, “SVD approach to data unfolding”, Nucl. Instrum. Meth. A
1996
Earlier work this paper cites.
G. Corcella et al., “HERWIG 6: An event generator for hadron emission reactions with interfering gluons (including supersymmetric processes)”, JHEP
2001
Earlier work this paper cites.
J. Pumplin et al., “New generation of parton distributions with uncertainties from global QCD analysis”, JHEP
2002
Earlier work this paper cites.
S. Frixione and B. R. Webber, “Matching NLO QCD computations and parton shower simulations”, JHEP
2002
Earlier work this paper cites.
V. Blobel, “An unfolding method for high energy physics experiments”, (2002). arXiv:hep-ex/0208022
2002
Earlier work this paper cites.
GEANT4 Collaboration, “ \GEANTfour
2003
Earlier work this paper cites.
P. Nason, “A New method for combining NLO QCD with shower Monte Carlo algorithms”, JHEP
2004
Earlier work this paper cites.
T. Sjöstrand, S. Mrenna, and P. Z. Skands, “PYTHIA 6.4 physics and manual”, JHEP
2006
Earlier work this paper cites.
M. Cacciari and G. P. Salam, “Dispelling the N 3 N^{3} myth for the k t k_{t} jet-finder”, Phys. Lett. B
2006
Earlier work this paper cites.
World Scientific, (2006)
Original
F. James, “Statistical methods in experimental physics, 2nd edition” · 2006
Earlier work this paper cites.
S. Dittmaier, P. Uwer, and S. Weinzierl, “NLO QCD corrections to t t ¯ \mathrm{t\bar{t}} + jet production at hadron colliders”, Phys. Rev. Lett
2007
Earlier work this paper cites.
M. L. Mangano, M. Moretti, F. Piccinini, and M. Treccani, “Matching matrix elements and shower evolution for top-quark production in hadronic collisions”, JHEP
2007
Earlier work this paper cites.
P. Z. Skands and D. Wicke, “Non-perturbative QCD effects and the top mass at the Tevatron”, Eur. Phys. J. C
2007
Earlier work this paper cites.
CMS Collaboration, “The CMS experiment at the CERN LHC”, JINST
2008
Earlier work this paper cites.
M. Cacciari, G. P. Salam, and G. Soyez, “The catchment area of jets”, JHEP
Original
2008
Earlier work this paper cites.
M. Cacciari, G. P. Salam, and G. Soyez, “The anti- k t k_{t} jet clustering algorithm”, JHEP
Original
2008
Earlier work this paper cites.
A. D. Martin, W. J. Stirling, R. S. Thorne, and G. Watt, “Parton distributions for the LHC”, Eur. Phys. J. C
Original
2009
Earlier work this paper cites.
CMS Collaboration, “Particle–Flow Event Reconstruction in CMS and Performance for Jets, Taus, and \MET
2009
Earlier work this paper cites.

Similar

S. Alioli, P. Nason, C. Oleari, and E. Re, “NLO single-top production matched with shower in POWHEG: s s - and t t -channel contributions”, JHEP
Original
2010
Cited alongside, same era.
N. Kidonakis, “NNLL resummation for s-channel single top quark production”, Phys. Rev. D
Original
2010
Cited alongside, same era.
N. Kidonakis, “Two-loop soft anomalous dimensions for single top quark associated production with W − \mathrm{W^{-}} or H − \mathrm{H^{-}} ”, Phys. Rev. D
2010
Cited alongside, same era.
H.-L. Lai et al., “New parton distributions for collider physics”, Phys. Rev. D
Original
2010
Cited alongside, same era.
CMS Collaboration, “Commissioning of the Particle-Flow Reconstruction in Minimum-Bias and Jet Events from \Pp
2010
Cited alongside, same era.
CMS Collaboration, “Electron Reconstruction and Identification at s = 7 \sqrt{s}=7 TeV”, CMS Physics Analysis Summary CMS-PAS-EGM-10-004, 2010
2010
Cited alongside, same era.
CMS Collaboration, “Jet Energy Resolution in CMS at s = 7 \sqrt{s}=7 TeV”, CMS Physics Analysis Summary CMS-PAS-JME-10-014, 2010
2010
Cited alongside, same era.
P. Z. Skands, “Tuning Monte Carlo generators: The Perugia tunes”, Phys. Rev. D
Original
2010
Cited alongside, same era.
G. Bevilacqua, M. Czakon, C. G. Papadopoulos, and M. Worek, “Hadronic top-quark pair production in association with two jets at Next-to-Leading Order QCD”, Phys. Rev. D
Original
2011
Cited alongside, same era.
M. I. Gresham, I.-W. Kim, and K. M. Zurek, “Searching for top flavor violating resonances”, Phys. Rev. D
Original
2011
Cited alongside, same era.
J. Alwall et al., “MadGraph 5: going beyond”, JHEP
Original
2011
Cited alongside, same era.
CMS Collaboration, “Measurement of the underlying event activity at the LHC with s = 7 \sqrt{s}=7 TeV and comparison with s = 0.9 \sqrt{s}=0.9 TeV”, JHEP
Original
2011
Cited alongside, same era.

Then

M. Botje et al., “The PDF4LHC Working Group Interim Recommendations”, (2011). arXiv:1101.0538
Original
2011
Later among the works it cites.
CMS Collaboration, “Determination of jet energy calibration and transverse momentum resolution in CMS”, JINST
Original
2011
Later among the works it cites.
M. Cacciari, G. P. Salam, and G. Soyez, “FastJet user manual”, (2011). arXiv:1111.6097
Original
2011
Later among the works it cites.
CMS Collaboration, “Measurement of the t t ¯ \mathrm{t\bar{t}} production cross section and the top quark mass in the dilepton channel in pp collisions at s = 7 \sqrt{s}=7 \TeV
Original
2011
Later among the works it cites.
CMS Collaboration, “Measurement of the \ttbar
Original
2011
Later among the works it cites.
NNPDF Collaboration, “Parton distributions with LHC data”, Nucl. Phys. B
Original
2012
Later among the works it cites.
CMS Collaboration, “Performance of CMS muon reconstruction in pp collision events at s = 7 \sqrt{s}=7 TeV”, JINST
Original
2012
Later among the works it cites.
Particle Data Group, J. Beringer et al., “Review of Particle Physics”, Phys. Rev. D
2012
Later among the works it cites.
CMS Collaboration, “Measurement of the electron charge asymmetry in inclusive W W production in pp collisions at s = 7 \sqrt{s}=7 TeV”, Phys. Rev. Lett
Original
2012
Later among the works it cites.
CMS Collaboration, “Measurement of the t t ¯ \mathrm{t\bar{t}} production cross section in the dilepton channel in pp collisions at s = 7 \sqrt{s}=7 TeV”, JHEP
Original
2012
Later among the works it cites.
CMS Collaboration, “Absolute Calibration of the Luminosity Measurement at CMS: Winter 2012 Update”, CMS Physics Analysis Summary CMS-PAS-SMP-12-008, 2012
2012
Later among the works it cites.
CMS Collaboration, “Measurement of differential top-quark-pair production cross sections in pp collisions at s = 7 \TeV \sqrt{s}=7\TeV ”, Eur. Phys. J. C
2013
Later among the works it cites.
CMS Collaboration, “Identification of b-quark jets with the CMS experiment”, JINST
Original
2013
Later among the works it cites.
CMS Collaboration, “Measurement of the t t ¯ \mathrm{t\bar{t}} production cross section in pp collisions at s = 7 \sqrt{s}=7 TeV with lepton + jets final states”, Phys. Lett. B
Original
2013
Later among the works it cites.
J. Gao et al., “CT10 next-to-next-to-leading order global analysis of QCD”, Phys. Rev. D
Original
2014
Closest in time.
ATLAS Collaboration, “Measurement of t t ¯ \mathrm{t\bar{t}} production with a veto on additional central jet activity in pp collisions at s \sqrt{s} = 7 TeV using the ATLAS detector”, Eur. Phys. J. C
Original
2043
Closest in time.
S. Frixione, P. Nason, and C. Oleari, “Matching NLO QCD computations with Parton Shower simulations: the POWHEG method”, JHEP
Original
2092
Closest in time.

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