Abstract
We introduce a new characteristic of jets called mass area. It is defined so as to measure the susceptibility of the jet’s mass to contamination from soft background. The mass area is a close relative of the recently introduced catchment area of jets. We define it also in two variants: passive and active. As a preparatory step, we generalise the results for passive and active areas of two-particle jets to the case where the two constituent particles have arbitrary transverse momenta. As a main part of our study, we use the mass area to analyse a range of modern jet algorithms acting on simple one and two-particle systems. We find a whole variety of behaviours of passive and active mass areas depending on the algorithm, relative hardness of particles or their separation. We also study mass areas of jets from Monte Carlo simulations as well as give an example of how the concept of mass area can be used to correct jets for contamination from pileup. Our results show that the information provided by the mass area can be very useful in a range of jet-based analyses.
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S.D. Ellis, J. Huston, K. Hatakeyama, P. Loch and M. Tonnesmann, Jets in hadron-hadron collisions, Prog. Part. Nucl. Phys. 60 (2008) 484 [arXiv:0712.2447] [SPIRES].
G.P. Salam, Towards Jetography, Eur. Phys. J. C 67 (2010) 637 [arXiv:0906.1833] [SPIRES].
M. Cacciari, G.P. Salam and G. Soyez, The Catchment Area of Jets, JHEP 04 (2008) 005 [arXiv:0802.1188] [SPIRES].
J.M. Butterworth, B.E. Cox and J.R. Forshaw, WW scattering at the CERN LHC, Phys. Rev. D 65 (2002) 096014 [hep-ph/0201098] [SPIRES].
J.M. Butterworth, J.R. Ellis and A.R. Raklev, Reconstructing sparticle mass spectra using hadronic decays, JHEP 05 (2007) 033 [hep-ph/0702150] [SPIRES].
J.M. Butterworth, A.R. Davison, M. Rubin and G.P. Salam, Jet substructure as a new Higgs search channel at the LHC, Phys. Rev. Lett. 100 (2008) 242001 [arXiv:0802.2470] [SPIRES].
D.E. Kaplan, K. Rehermann, M.D. Schwartz and B. Tweedie, Top Tagging: A Method for Identifying Boosted Hadronically Decaying Top Quarks, Phys. Rev. Lett. 101 (2008) 142001 [arXiv:0806.0848] [SPIRES].
L.G. Almeida et al., Substructure of high-p T Jets at the LHC, Phys. Rev. D 79 (2009) 074017 [arXiv:0807.0234] [SPIRES].
T. Plehn, G.P. Salam and M. Spannowsky, Fat Jets for a Light Higgs, Phys. Rev. Lett. 104 (2010) 111801 [arXiv:0910.5472] [SPIRES].
S.D. Ellis, C.K. Vermilion and J.R. Walsh, Techniques for improved heavy particle searches with jet substructure, Phys. Rev. D 80 (2009) 051501 [arXiv:0903.5081] [SPIRES].
S.D. Ellis, C.K. Vermilion and J.R. Walsh, Recombination Algorithms and Jet Substructure: Pruning as a Tool for Heavy Particle Searches, Phys. Rev. D 81 (2010) 094023 [arXiv:0912.0033] [SPIRES].
D. Krohn, J. Thaler and L.-T. Wang, Jet Trimming, JHEP 02 (2010) 084 [arXiv:0912.1342] [SPIRES].
G.D. Kribs, A. Martin, T.S. Roy and M. Spannowsky, Discovering Higgs Bosons of the MSSM using Jet Substructure, Phys. Rev. D 82 (2010) 095012 [arXiv:1006.1656] [SPIRES].
G.D. Kribs, A. Martin, T.S. Roy and M. Spannowsky, Discovering the Higgs Boson in New Physics Events using Jet Substructure, Phys. Rev. D 81 (2010) 111501 [arXiv:0912.4731] [SPIRES].
M.H. Seymour, Searches for new particles using cone and cluster jet algorithms: A Comparative study, Z. Phys. C 62 (1994) 127 [SPIRES].
K. Agashe, A. Belyaev, T. Krupovnickas, G. Perez and J. Virzi, LHC signals from warped extra dimensions, Phys. Rev. D 77 (2008) 015003 [hep-ph/0612015] [SPIRES].
L.G. Almeida, S.J. Lee, G. Perez, I. Sung and J. Virzi, Top Jets at the LHC, Phys. Rev. D 79 (2009) 074012 [arXiv:0810.0934] [SPIRES].
J.M. Butterworth, J.R. Ellis, A.R. Raklev and G.P. Salam, Discovering baryon-number violating neutralino decays at the LHC, Phys. Rev. Lett. 103 (2009) 241803 [arXiv:0906.0728] [SPIRES].
M. Dasgupta, L. Magnea and G.P. Salam, Non-perturbative QCD effects in jets at hadron colliders, JHEP 02 (2008) 055 [arXiv:0712.3014] [SPIRES].
M. Cacciari, G.P. Salam and S. Sapeta, On the characterisation of the underlying event, JHEP 04 (2010) 065 [arXiv:0912.4926] [SPIRES].
M. Cacciari and G.P. Salam, Pileup subtraction using jet areas, Phys. Lett. B 659 (2008) 119 [arXiv:0707.1378] [SPIRES].
S. Catani, Y.L. Dokshitzer, M.H. Seymour and B.R. Webber, Longitudinally invariant K t clustering algorithms for hadron hadron collisions, Nucl. Phys. B 406 (1993) 187 [SPIRES].
S.D. Ellis and D.E. Soper, Successive combination jet algorithm for hadron collisions, Phys. Rev. D 48 (1993) 3160 [hep-ph/9305266] [SPIRES].
Y.L. Dokshitzer, G.D. Leder, S. Moretti and B.R. Webber, Better Jet Clustering Algorithms, JHEP 08 (1997) 001 [hep-ph/9707323] [SPIRES].
M. Wobisch and T. Wengler, Hadronization corrections to jet cross sections in deep-inelastic scattering, hep-ph/9907280 [SPIRES].
M. Wobisch, Measurement and QCD analysis of jet cross sections in deep-inelastic positron proton collisions at s**(1/2) = 300-GeV, DESY-THESIS-2000-049 [SPIRES].
M. Cacciari, G.P. Salam and G. Soyez, The anti-k t jet clustering algorithm, JHEP 04 (2008) 063 [arXiv:0802.1189] [SPIRES].
G.P. Salam and G. Soyez, A practical Seedless Infrared-Safe Cone jet algorithm, JHEP 05 (2007) 086 [arXiv:0704.0292] [SPIRES].
G.C. Blazey et al., Run II jet physics, Proceedings of the Physics at RUN II: QCD and Weak Boson Physics Workshop, Batavia U.S.A. (2000) [hep-ex/0005012] [SPIRES].
M. Cacciari and G.P. Salam, Dispelling the N 3 myth for the k t jet-finder, Phys. Lett. B 641 (2006) 57 [hep-ph/0512210] [SPIRES].
M. Cacciari, G.P. Salam, and G. Soyez, FastJet, http://fastjet.fr.
D. de Florian and W. Vogelsang, Resummed cross-section for jet production at hadron colliders, Phys. Rev. D 76 (2007) 074031 [arXiv:0704.1677] [SPIRES].
S. Catani, L. Trentadue, G. Turnock and B.R. Webber, Resummation of large logarithms in e + e − event shape distributions, Nucl. Phys. B 407 (1993) 3 [SPIRES].
S.J. Burby and E.W.N. Glover, Resumming the Light Hemisphere Mass and Narrow Jet Broadening distributions in e + e − annihilation, JHEP 04 (2001) 029 [hep-ph/0101226] [SPIRES].
M. Dasgupta and G.P. Salam, Resummation of non-global QCD observables, Phys. Lett. B 512 (2001) 323 [hep-ph/0104277] [SPIRES].
M. Dasgupta and G.P. Salam, Resummed event-shape variables in DIS, JHEP 08 (2002) 032 [hep-ph/0208073] [SPIRES].
T. Sjöstrand, S. Mrenna and P.Z. Skands, PYTHIA 6.4 Physics and Manual, JHEP 05 (2006) 026 [hep-ph/0603175] [SPIRES].
T. Sjöstrand, S. Mrenna and P.Z. Skands, A Brief Introduction to PYTHIA 8.1, Comput. Phys. Commun. 178 (2008) 852 [arXiv:0710.3820] [SPIRES].
G.P. Salam, Reaching beyond the electroweak scale: giant K-factors, fat jets and pileup, http://www.lpthe.jussieu.fr/∼salam/talks/repo/2011-cms-week.pdf, 2011.
M. Cacciari, J. Rojo, G.P. Salam and G. Soyez, Quantifying the performance of jet definitions for kinematic reconstruction at the LHC, JHEP 12 (2008) 032 [arXiv:0810.1304] [SPIRES].
G. Soyez, Optimal jet radius in kinematic dijet reconstruction, JHEP 07 (2010) 075 [arXiv:1006.3634] [SPIRES].
Y. Cui, Z. Han and M.D. Schwartz, W-jet Tagging: Optimizing the Identification of Boosted Hadronically-Decaying W Bosons, Phys. Rev. D 83 (2011) 074023 [arXiv:1012.2077] [SPIRES].
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Sapeta, S., Zhang, Q.C. The mass area of jets. J. High Energ. Phys. 2011, 38 (2011). https://doi.org/10.1007/JHEP06(2011)038
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DOI: https://doi.org/10.1007/JHEP06(2011)038