A case study of quark-gluon discrimination at NNLL′ in comparison to parton showers

被引：0
作者：
Mo, Jonathan [1 ,2 ,3 ]
Tackmann, Frank J. [4 ]
Waalewijn, Wouter J. [1 ,2 ,3 ]
机构：
[1] Univ Amsterdam, Inst Theoret Phys Amsterdam, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands
[2] Univ Amsterdam, Delta Inst Theoret Phys, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands
[3] Nikhef, Theory Grp, Sci Pk 105, NL-1098 XG Amsterdam, Netherlands
[4] DESY, Theory Grp, D-22607 Hamburg, Germany
来源：
EUROPEAN PHYSICAL JOURNAL C | 2017年 / 77卷 / 11期
关键词：
DRELL-YAN; QCD; RENORMALIZATION; RESUMMATION; LOGARITHMS; LOOPS; SOFT;
D O I：
10.1140/epjc/s10052-017-5365-9
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
Predictions for our ability to distinguish quark and gluon jets vary by more than a factor of two between different parton showers. We study this problem using analytic resummed predictions for the thrust event shape up to NNLL' using e(+)e(-) -> Z -> q (q) over bar and e(+)e(-) -> H -> gg as proxies for quark and gluon jets. We account for hadronization effects through a nonperturbative shape function, and include an estimate of both perturbative and hadronization uncertainties. In contrast to previous studies, we find reasonable agreement between our results and predictions from both PYTHIA and HERWIG parton showers. We find that this is due to a noticeable improvement in the description of gluon jets in the newest HERWIG 7.1 compared to previous versions.
引用
收藏
页数：10
相关论文
共 53 条
  • [1] Thrust at N3LL with power corrections and a precision global fit for αs(mZ)
    Abbate, Riccardo
    Fickinger, Michael
    Hoang, Andre H.
    Mateu, Vicent
    Stewart, Iain W.
    [J]. PHYSICAL REVIEW D, 2011, 83 (07):
  • [2] Boosted objects: a probe of beyond the standard model physics
    Abdesselam, A.
    Belyaev, A.
    Kuutmann, E. Bergeaas
    Bitenc, U.
    Brooijmans, G.
    Butterworth, J.
    de Renstrom, P. Bruckman
    Franzosi, D. Buarque
    Buckingham, R.
    Chapleau, B.
    Dasgupta, M.
    Davison, A.
    Dolen, J.
    Ellis, S.
    Fassi, F.
    Ferrando, J.
    Frandsen, M. T.
    Frost, J.
    Gadfort, T.
    Glover, N.
    Haas, A.
    Halkiadakis, E.
    Hamilton, K.
    Hays, C.
    Hill, C.
    Jackson, J.
    Issever, C.
    Karagoz, M.
    Katz, A.
    Kreczko, L.
    Krohn, D.
    Lewis, A.
    Livermore, S.
    Loch, P.
    Maksimovic, P.
    March-Russell, J.
    Martin, A.
    McCubbin, N.
    Newbold, D.
    Ott, J.
    Perez, G.
    Policchio, A.
    Rappoccio, S.
    Raklev, A. R.
    Richardson, P.
    Salam, G. P.
    Sannino, F.
    Santiago, J.
    Schwartzman, A.
    Shepherd-Themistocleous, C.
    [J]. EUROPEAN PHYSICAL JOURNAL C, 2011, 71 (06):
  • [3] Adams D, 2015, EUR PHYS J C, V75, DOI 10.1140/epjc/s10052-015-3587-2
  • [4] Boosted objects and jet substructure at the LHC. Report of BOOST2012, held at IFIC Valencia, 23rd-27th of July 2012
    Altheimer, A.
    Arce, A.
    Asquith, L.
    Mayes, J. Backus
    Kuutmann, E. Bergeaas
    Berger, J.
    Bjergaard, D.
    Bryngemark, L.
    Buckley, A.
    Butterworth, J.
    Cacciari, M.
    Campanelli, M.
    Carli, T.
    Chala, M.
    Chapleau, B.
    Chen, C.
    Chou, J. P.
    Cornelissen, Th
    Curtin, D.
    Dasgupta, M.
    Davison, A.
    de Almeida Dias, F.
    de Cosa, A.
    de Roeck, A.
    Debenedetti, C.
    Doglioni, C.
    Ellis, S. D.
    Fassi, F.
    Ferrando, J.
    Fleischmann, S.
    Freytsis, M.
    Gonzalez Silva, M. L.
    Gonzalez de la Hoz, S.
    Guescini, F.
    Han, Z.
    Hook, A.
    Hornig, A.
    Izaguirre, E.
    Jankowiak, M.
    Juknevich, J.
    Kaci, M.
    Kar, D.
    Kasieczka, G.
    Kogler, R.
    Larkoski, A.
    Loch, P.
    Mateos, D. Lopez
    Marzani, S.
    Masetti, L.
    Mateu, V.
    [J]. EUROPEAN PHYSICAL JOURNAL C, 2014, 74 (03): : 1 - 24
  • [5] Jet substructure at the Tevatron and LHC: new results, new tools, new benchmarks
    Altheimer, A.
    Arora, S.
    Asquith, L.
    Brooijmans, G.
    Butterworth, J.
    Campanelli, M.
    Chapleau, B.
    Cholakian, A. E.
    Chou, J. P.
    Dasgupta, M.
    Davison, A.
    Dolen, J.
    Ellis, S. D.
    Essig, R.
    Fan, J. J.
    Field, R.
    Fregoso, A.
    Gallicchio, J.
    Gershtein, Y.
    Gomes, A.
    Haas, A.
    Halkiadakis, E.
    Halyo, V.
    Hoeche, S.
    Hook, A.
    Hornig, A.
    Huang, P.
    Izaguirre, E.
    Jankowiak, M.
    Kribs, G.
    Krohn, D.
    Larkoski, A. J.
    Lath, A.
    Lee, C.
    Lee, S. J.
    Loch, P.
    Maksimovic, P.
    Martinez, M.
    Miller, D. W.
    Plehn, T.
    Prokofiev, K.
    Rahmat, R.
    Rappoccio, S.
    Safonov, A.
    Salam, G. P.
    Schumann, S.
    Schwartz, M. D.
    Schwartzman, A.
    Seymour, M.
    Shao, J.
    [J]. JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 2012, 39 (06)
  • [6] [Anonymous], 2008, J HIGH ENERGY PHYS
  • [7] [Anonymous], 9 HOUCH WORKSH PHYS
  • [8] Evolution of the light-cone distribution function for a heavy quark
    Balzereit, C
    Mannel, T
    Kilian, W
    [J]. PHYSICAL REVIEW D, 1998, 58 (11):
  • [9] Two-loop QED corrections to Bhabha scattering
    Becher, Thomas
    Melnikov, Kirill
    [J]. JOURNAL OF HIGH ENERGY PHYSICS, 2007, (06):
  • [10] Toward a NNLO calculation of the (B)over-bar → Xsγ decay rate with a cut on photon energy:: II.: Two-loop result for the jet function
    Becher, Thomas
    Neubert, Matthias
    [J]. PHYSICS LETTERS B, 2006, 637 (4-5) : 251 - 259
123456