Higgs/  activity status at LPNHE -Analyse  -Recherche du Higgs en 2  18/01/111Reunion des responsables LPNHE.

Présentation au sujet: "Higgs/  activity status at LPNHE -Analyse  -Recherche du Higgs en 2  18/01/111Reunion des responsables LPNHE."— Transcription de la présentation:

1 Higgs/  activity status at LPNHE -Analyse  -Recherche du Higgs en 2  18/01/111Reunion des responsables LPNHE

2 The team Permanents : G. Calderini, S. de Cecco, B. Laforge, S. Laplace, L. Roos, G. Marchiori, J. Ocariz, I. Nikolic Post-doc : Marine Kuna, Yuji Enari (50 % D0/ 50 % ATLAS) Etudiants : 3 ème année : Li Yuan (L. Roos, co-tutelle IHEP/UPMC, bourse Chine) (section efficace  ) 2 ème année : Heberth Torres (G. Calderini, bourse Venezuela) (Analyse Higgs   inclusive) 1 ère année : Olivier Davignon (S. de Cecco, NPAC) (Analyse Higgs   +jets) Camilla Rangel (J. Ocariz, bourse Venezuela) (Analyse Higgs   ) Liwen Yao (B. Laforge, cotutelle IHEP/UPMC, bourse Chine) (Analyse Higgs   2 sujets proposés pour 2011 : S. Laplace ou L. Roos, G. Marchiori Coordination : B. Laforge 18/01/11Reunion des responsables LPNHE2

3 Working area Reconstruction and identification of electrons and  – Optimisation of selections – Determination of reconstruction efficiencies – Improvement of the E and Mass resolution Réjection  /jet (  /  0 ) Calorimeter or track based Isolation Statistical analysis (limits, optimisation) Evaluation of Trigger efficiencies Phenomenology (cross-sections at LO, NLO, NNLO, generators Diphox, Resbos, Sherpa, HQt, Pythia, Herwig, MC@NLO, Alpgen, resommation, EW corrections, QCD corrections, Branching ratios HDecay) 18/01/11Reunion des responsables LPNHE3

4 state of the art of current activities Summer conference 2011 – Diphoton analysis : New analysis with 500 pb-1 is a goal considered by SM group – Photon-jet cross-section : New analysis considered by SM group Giovanni M.) – Higgs analysis : New analysis with 500 (700) pb-1 is a goal Our goals : – Reconsider the selection (Camilla, José, Heberth) – Include categories (jets, eta) (Olivier, Sandro) – Better understand the mass resolution (pileup, conv/unconv) (Liwen, Bertrand) – Fit multiple backgrounds using isolation distributions (Marine, Bertrand, José, Heberth, Giovanni C., +collab. CERN) – Include extra variables (Heberth, Liwen, Camilla, Marine) – Fight against irreducible brem induced background (Heberth, Giovanni, Bertrand) – Organisationnal responsabilities : Coordination – Edition supporting Note on background (H. torres, J.) Higgs DPD Contact : Heberth Torres. HSG1 Trigger Contact : O. Davignon 18/01/11Réunion des responsables LPNHE4