Modelling Z→ττ processes in ATLAS with τ-embedded Z→μμ data - IN2P3 - Institut national de physique nucléaire et de physique des particules
Article Dans Une Revue Journal of Instrumentation Année : 2015

Modelling Z→ττ processes in ATLAS with τ-embedded Z→μμ data

G. Aad (1) , M.K. Ayoub (2) , A. Bassalat (2) , C. Becot (2) , S. Binet (2) , C. Bourdarios (2) , J.B. de Vivie de Regie (2) , D. Delgove (2) , L. Duflot (2) , M. Escalier (2) , L. Fayard (2) , D. Fournier (2) , E.L. Gkougkousis (2) , J.-F. Grivaz (2) , T. Guillemin (2) , F. Hariri (2) , S. Henrot-Versillé (2) , J. Hrivnac (2) , L. Iconomidou-Fayard (2) , M. Kado (2) , A. Lounis (2) , N. Makovec (2) , N. Morange (2) , C. Nellist (2) , L. Poggioli (2) , P. Puzo (2) , A. Renaud (2) , D. Rousseau (2) , G. Rybkin (2) , A.C. Schaffer (2) , E. Scifo (2) , L. Serin (2) , S. Simion (2) , R. Tanaka (2) , H.L. Tran (2) , D. Zerwas (2) , Z. Zhang (2) , Y. Zhao (2) , G. Rahal (3) , D. Boumediene (4) , Emmanuel Busato (4) , D. Calvet (4) , S. Calvet (4) , J. Donini (4) , E. Dubreuil (4) , G. Gilles (4) , Ph. Gris (4) , H. Liao (4) , R. Madar (4) , D. Pallin (4) , S.M. Romano Saez (4) , C. Santoni (4) , D. Simon (4) , Timothée Theveneaux-Pelzer (4) , F. Vazeille (4) , L. Alio (1) , M. Barbero (1) , Y. Coadou (1) , C. Diaconu (1) , Sara Diglio (1) , F. Djama (1) , O. Duccu (5, 1) , L. Feligioni (1) , J. Gao (1, 6) , G.D. Hallewell (1) , F. Hubaut (1) , S.J. Kahn (1) , E. B. F. G. Knoops (1) , E. Le Guirriec (1) , J. Liu , K. Liu (1) , D. Madaffari (1) , K. Mochizuki (1) , E. Monnier (1) , S. Muanza (1) , Y. Nagai (1) , E. Nagy (1) , P. Pralavorio (1) , A. Rozanov , T. Serre (1) , M. Talby (1) , R.E. Ticse Torres (1) , E. Tiouchichine (1) , S. Tisserant (1) , J. Toth (1) , F. Touchard (1) , L. Vacavant (1) , Z. Barnovska (7) , N. Berger (7) , M. Delmastro (7) , L. Di Ciaccio (7) , S. Elles (7) , T. Hryn’ova (7) , S. Jézéquel (7) , I. Koletsou (7) , R. Lafaye (7) , J. Leveque (7) , N. Massol (7) , G. Sauvage (7) , E. Sauvan (7) , O. Simard (7) , T. Todorov (7) , I. Wingerter-Seez (7) , E. Yatsenko (7) , S. Albrand (8) , J. Brown (8) , J. Collot (8) , S. Crépé-Renaudin (8) , P.A. Delsart (8) , C. Gabaldon (8) , M.H. Genest (8) , J.Y. Hostachy (8) , F. Ledroit-Guillon (8) , A. Lleres (8) , A. Lucotte (8) , F. Malek (8) , C. Monini (8) , J. Stark (8) , B. Trocmé (8) , M. Wu (8)
G. Aad
D. Rousseau
D. Zerwas
  • Fonction : Auteur
  • PersonId : 842996
Y. Coadou
J. Liu
  • Fonction : Auteur
E. Monnier
A. Rozanov
  • Fonction : Auteur
N. Berger
T. Hryn’ova

Résumé

This paper describes the concept, technical realisation and validation of a largely data-driven method to model events with Z→ττ decays. In Z→μμ events selected from proton-proton collision data recorded at s√=8 TeV with the ATLAS experiment at the LHC in 2012, the Z decay muons are replaced by τ leptons from simulated Z→ττ decays at the level of reconstructed tracks and calorimeter cells. The τ lepton kinematics are derived from the kinematics of the original muons. Thus, only the well-understood decays of the Z boson and τ leptons as well as the detector response to the τ decay products are obtained from simulation. All other aspects of the event, such as the Z boson and jet kinematics as well as effects from multiple interactions, are given by the actual data. This so-called τ-embedding method is particularly relevant for Higgs boson searches and analyses in ττ final states, where Z→ττ decays constitute a large irreducible background that cannot be obtained directly from data control samples.

Dates et versions

in2p3-01165461 , version 1 (19-06-2015)

Identifiants

Citer

G. Aad, M.K. Ayoub, A. Bassalat, C. Becot, S. Binet, et al.. Modelling Z→ττ processes in ATLAS with τ-embedded Z→μμ data. Journal of Instrumentation, 2015, 10, pp.P09018. ⟨10.1088/1748-0221/10/09/P09018⟩. ⟨in2p3-01165461⟩
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