[논문]Exploration of jet substructure using iterative declustering in pp and Pb–Pb collisions at LHC energies

Acharya, S.; Adamová; , D.; Adhya, S.P.; Adler, A.; Adolfsson, J.; Aggarwal, M.M.; Aglieri Rinella, G.; Agnello, M.; Agrawal, N.; Ahammed, Z.; Ahmad, S.; Ahn, S.U.; Akindinov, A.; Al-Turany, M.; Alam, S.N.; Albuquerque, D.S.D.; Aleksandrov, D.; Alessandro, B.; Alfanda, H.M.; Alfaro Molina, R.; Ali, B.; Ali, Y.; Alici, A.; Alkin, A.; Alme, J.; Alt, T.; Altenkamper, L.; Altsybeev, I.; Anaam, M.N.; Andrei, C.; Andreou, D.; Andrews, H.A.; Andronic, A.; Angeletti, M.; Anguelov, V.; Anson, C.; Antič; ić; , T.; Antinori, F.; Antonioli, P.; Anwar, R.; Apadula, N.; Aphecetche, L.; Appelshä; user, H.; Arcelli, S.; Arnaldi, R.; Arratia, M.; Arsene, I.C.; Arslandok, M.; Augustinus, A.; Averbeck, R.; Aziz, S.; Azmi, M.D.; Badalà; , A.; Baek, Y.W.; Bagnasco, S.; Bai, X.; Bailhache, R.; Bala, R.; Baldisseri, A.; Ball, M.; Balouza, S.; Baral, R.C.; Barbera, R.; Barioglio, L.; Barnafö; ldi, G.G.; Barnby, L.S.; Bar

doi:10.1016/j.physletb.2020.135227

[해외논문] Exploration of jet substructure using iterative declustering in pp and Pb–Pb collisions at LHC energies 원문보기

Physics letters: B, v.802, 2020년, pp.135227 -

Acharya, S. (Variable Energy Cyclotron Centre, Homi Bhabha National Institute) , Adamová, D. (Nuclear Physics Institute of the Czech Academy of Sciences) , Adhya, S.P. (Variable Energy Cyclotron Centre, Homi Bhabha National Institute) , Adler, A. (Johann-Wolfgang-Goethe Universitä) , Adolfsson, J. (t Frankfurt, Institut fü) , Aggarwal, M.M. (r Informatik, Fachbereich Informatik und Mathematik) , Aglieri Rinella, G. (Lund University Department of Physics, Division of Particle Physics) , Agnello, M. (Physics Department, Panjab University) , Agrawal, N. (European Organization for Nuclear Research (CERN)) , Ahammed, Z. (Dipartimento DISAT del Politecnico, Sezione INFN) , Ahmad, S. (Indian Institute of Technology Bombay (IIT)) , Ahn, S.U. (Variable Energy Cyclotron Centre, Homi Bhabha National Institute) , Akindinov, A. (Department of Physics, Aligarh Muslim University) , Al-Turany, M. (Korea Institut) , Alam, S.N. , Albuquerque, D.S.D. , Aleksandrov, D. , Alessandro, B. , Alfanda, H.M. , Alfaro Molina, R. , Ali, B. , Ali, Y. , Alici, A. , Alkin, A. , Alme, J. , Alt, T. , Altenkamper, L. , Altsybeev, I. , Anaam, M.N. , Andrei, C. , Andreou, D. , Andrews, H.A. , Andronic, A. , Angeletti, M. , Anguelov, V. , Anson, C. , Antičić, T. , Antinori, F. , Antonioli, P. , Anwar, R. , Apadula, N. , Aphecetche, L. , Appelshäuser, H. , Arcelli, S. , Arnaldi, R. , Arratia, M. , Arsene, I.C. , Arslandok, M. , Augustinus, A. , Averbeck, R. , Aziz, S. , Azmi, M.D. , Badalà, A. , Baek, Y.W. , Bagnasco, S. , Bai, X. , Bailhache, R. , Bala, R. , Baldisseri, A. , Ball, M. , Balouza, S. , Baral, R.C. , Barbera, R. , Barioglio, L. , Barnaföldi, G.G. , Barnby, L.S. , Bar

Abstract ▼ AI-Helper

Abstract The ALICE collaboration at the CERN LHC reports novel measurements of jet substructure in pp collisions at s = 7 TeV and central Pb–Pb collisions at s NN = 2.76 TeV. Jet substructure of track-based jets is explored via iterative declustering and grooming techniques. We present the measurement of the momentum sharing of two-prong substructure exposed via grooming, the z g , and its dependence on the opening angle, in both pp and Pb–Pb collisions. We also present the measurement of the distribution of the number of branches obtained in the iterative declustering of the jet, which is interpreted as the number of its hard splittings. In Pb–Pb collisions, we observe a suppression of symmetric splittings at large opening angles and an enhancement of splittings at small opening angles relative to pp collisions, with no significant modification of the number of splittings. The results are compared to predictions from various Monte Carlo event generators to test the role of important concepts in the evolution of the jet in the medium such as colour coherence.

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