Identification of boosted, hadronically decaying W bosons and comparisons with ATLAS data taken at √s = 8 TeV

Identification of boosted, hadronically decaying W bosons and comparisons with ATLAS data taken at √s = 8 TeV

This paper reports a detailed study of techniques for identifying boosted, hadronically decaying W bosons using 20.3 fb (Formula presented.) of proton–proton collision data collected by the ATLAS detector at the LHC at a centre-of-mass energy (Formula presented.). A range of techniques for optimisin...

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Dades bibliogràfiques
Autors principals: Issever, C, Atlas Collaboration, Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Aben, R, Abolins, M, AbouZeid, O, Abramowicz, H, Abreu, H, Abreu, R, Abulaiti, Y, Acharya, B, Adamczyk, L, Adams, D, Adelman, J, Adomeit, S, Adye, T, Affolder, A, Agatonovic-Jovin, T, Agricola, J, Aguilar-Saavedra, J, Ahlen, S, Ahmadov, F, Aielli, G, Akerstedt, H, Åkesson, T, Akimov, A, Alberghi, G, Albert, J, Albrand, S, Alconada Verzini, M, Aleksa, M, Aleksandrov, I, Alexa, C, Alexander, G, Alexopoulos, T, Alhroob, M, Alimonti, G, Alio, L, Alison, J, Alkire, S, Allbrooke, B, Allport, P, Aloisio, A, Alonso, A, Alonso, F, Alpigiani, C, Altheimer, A, Alvarez Gonzalez, B, Álvarez Piqueras, D, Alviggi, MG, Amadio, B, Amako, K, Amaral Coutinho, Y, Amelung, C, Amidei, D, Amor Dos Santos, S, Amorim, A, Amoroso, S, Amram, N, Amundsen, G, Anastopoulos, C, Ancu, L, Andari, N, Andeen, T, Anders, C, Anders, G, Anders, J, Anderson, K, Andreazza, A, Andrei, V, Angelidakis, S, Angelozzi, I, Anger, P, Angerami, A, Anghinolfi, F, Anisenkov, A, Anjos, N, Annovi, A, Antonelli, M, Antonov, A, Antos, J, Anulli, F, Aoki, M
Format: Journal article
Publicat: Springer Berlin Heidelberg 2016
Descripció
Sumari:This paper reports a detailed study of techniques for identifying boosted, hadronically decaying W bosons using 20.3 fb (Formula presented.) of proton–proton collision data collected by the ATLAS detector at the LHC at a centre-of-mass energy (Formula presented.). A range of techniques for optimising the signal jet mass resolution are combined with various jet substructure variables. The results of these studies in Monte Carlo simulations show that a simple pairwise combination of groomed jet mass and one substructure variable can provide a 50 % efficiency for identifying W bosons with transverse momenta larger than 200 GeV while maintaining multijet background efficiencies of 2–4 % for jets with the same transverse momentum. These signal and background efficiencies are confirmed in data for a selection of tagging techniques.

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