dc.date.accessioned | 2022-04-07T19:38:58Z | |
dc.date.available | 2022-04-07T19:38:58Z | |
dc.date.created | 2022-03-09T12:33:30Z | |
dc.date.issued | 2021 | |
dc.identifier.citation | Acharya, Shreyasi Adamová, Dagmar Adler, Alexander Adolfsson, Jonatan Aglieri Rinella, Gianluca Agnello, Michelangelo Agrawal, Nikita Ahammed, Zubayer Ahmad, Shafiq F. Ahn, Sang Un Alme, Johan Altenkaemper, Lucas Djuvsland, Øystein Eikeland, Viljar Nilsen Ersdal, Magnus Rentsch Fionda, Fiorella Maria Celeste Grøttvik, Ola Slettevoll Lofnes, Ingrid Mckibben Nystrand, Joakim Ingemar Rehman, Attiq Ur Röhrich, Dieter Sætre, Jon-Are Tambave, Ganesh Jagannath Ullaland, Kjetil Wagner, Boris Yang, Shiming Yuan, Shiming Arsene, Ionut Cristian Dordic, Olja Malik, Qasim Waheed Neagu, Alexandra Richter, Matthias Røed, Ketil Skaali, Toralf Bernhard Storehaug, Ida Torkjellsdatter Tveter, Trine Spedstad Wikne, Jon Christopher Helstrup, Håvard Hetland, Kristin Fanebust Kileng, Bjarte Nesbø, Simon Voigt Reme-Ness, Haakon André Storetvedt, Maksim Melnik Langøy, Rune Lien, Jørgen André Ahuja, Ishaan Akbar, Zaenai Akindinov, Alexander Al-Turany, Mohammed Alam, Sk Noor ALICE, Collaboration . First measurements of N-subjettiness in central Pb-Pb collisions at √sNN = 2.76 TeV. Journal of High Energy Physics (JHEP). 2021, 2021:3, 1-34 | |
dc.identifier.uri | http://hdl.handle.net/10852/93443 | |
dc.description.abstract | The ALICE Collaboration reports the first fully-corrected measurements of the N-subjettiness observable for track-based jets in heavy-ion collisions. This study is performed using data recorded in pp and Pb-Pb collisions at centre-of-mass energies of s√ = 7 TeV and sNN−−−√ = 2.76 TeV, respectively. In particular the ratio of 2-subjettiness to 1-subjettiness, τ2/τ1, which is sensitive to the rate of two-pronged jet substructure, is presented. Energy loss of jets traversing the strongly interacting medium in heavy-ion collisions is expected to change the rate of two-pronged substructure relative to vacuum. The results are presented for jets with a resolution parameter of R = 0.4 and charged jet transverse momentum of 40 ≤ pT,jet ≤ 60 GeV/c, which constitute a larger jet resolution and lower jet transverse momentum interval than previous measurements in heavy-ion collisions. This has been achieved by utilising a semi-inclusive hadron-jet coincidence technique to suppress the larger jet combinatorial background in this kinematic region. No significant modification of the τ2/τ1 observable for track-based jets in Pb-Pb collisions is observed relative to vacuum PYTHIA6 and PYTHIA8 references at the same collision energy. The measurements of τ2/τ1, together with the splitting aperture angle ∆R, are also performed in pp collisions at s√ = 7 TeV for inclusive jets. These results are compared with PYTHIA calculations at s√ = 7 TeV, in order to validate the model as a vacuum reference for the Pb-Pb centre-of-mass energy. The PYTHIA references for τ2/τ1 are shifted to larger values compared to the measurement in pp collisions. This hints at a reduction in the rate of two-pronged jets in Pb-Pb collisions compared to pp collisions. | |
dc.language | EN | |
dc.rights | Attribution 4.0 International | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.title | First measurements of N-subjettiness in central Pb-Pb collisions at √sNN = 2.76 TeV | |
dc.type | Journal article | |
dc.creator.author | Acharya, Shreyasi | |
dc.creator.author | Adamová, Dagmar | |
dc.creator.author | Adler, Alexander | |
dc.creator.author | Adolfsson, Jonatan | |
dc.creator.author | Aglieri Rinella, Gianluca | |
dc.creator.author | Agnello, Michelangelo | |
dc.creator.author | Agrawal, Nikita | |
dc.creator.author | Ahammed, Zubayer | |
dc.creator.author | Ahmad, Shafiq F. | |
dc.creator.author | Ahn, Sang Un | |
dc.creator.author | Alme, Johan | |
dc.creator.author | Altenkaemper, Lucas | |
dc.creator.author | Djuvsland, Øystein | |
dc.creator.author | Eikeland, Viljar Nilsen | |
dc.creator.author | Ersdal, Magnus Rentsch | |
dc.creator.author | Fionda, Fiorella Maria Celeste | |
dc.creator.author | Grøttvik, Ola Slettevoll | |
dc.creator.author | Lofnes, Ingrid Mckibben | |
dc.creator.author | Nystrand, Joakim Ingemar | |
dc.creator.author | Rehman, Attiq Ur | |
dc.creator.author | Röhrich, Dieter | |
dc.creator.author | Sætre, Jon-Are | |
dc.creator.author | Tambave, Ganesh Jagannath | |
dc.creator.author | Ullaland, Kjetil | |
dc.creator.author | Wagner, Boris | |
dc.creator.author | Yang, Shiming | |
dc.creator.author | Yuan, Shiming | |
dc.creator.author | Arsene, Ionut Cristian | |
dc.creator.author | Dordic, Olja | |
dc.creator.author | Malik, Qasim Waheed | |
dc.creator.author | Neagu, Alexandra | |
dc.creator.author | Richter, Matthias | |
dc.creator.author | Røed, Ketil | |
dc.creator.author | Skaali, Toralf Bernhard | |
dc.creator.author | Storehaug, Ida Torkjellsdatter | |
dc.creator.author | Tveter, Trine Spedstad | |
dc.creator.author | Wikne, Jon Christopher | |
dc.creator.author | Helstrup, Håvard | |
dc.creator.author | Hetland, Kristin Fanebust | |
dc.creator.author | Kileng, Bjarte | |
dc.creator.author | Nesbø, Simon Voigt | |
dc.creator.author | Reme-Ness, Haakon André | |
dc.creator.author | Storetvedt, Maksim Melnik | |
dc.creator.author | Langøy, Rune | |
dc.creator.author | Lien, Jørgen André | |
dc.creator.author | Ahuja, Ishaan | |
dc.creator.author | Akbar, Zaenai | |
dc.creator.author | Akindinov, Alexander | |
dc.creator.author | Al-Turany, Mohammed | |
dc.creator.author | Alam, Sk Noor | |
dc.creator.author | ALICE, Collaboration | |
cristin.unitcode | 185,15,4,60 | |
cristin.unitname | Høyenergifysikk | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 2 | |
dc.identifier.cristin | 2008494 | |
dc.identifier.bibliographiccitation | info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of High Energy Physics (JHEP)&rft.volume=2021:3&rft.spage=1&rft.date=2021 | |
dc.identifier.jtitle | Journal of High Energy Physics (JHEP) | |
dc.identifier.volume | 2021 | |
dc.identifier.issue | 10 | |
dc.identifier.doi | https://doi.org/10.1007/JHEP10(2021)003 | |
dc.identifier.urn | URN:NBN:no-96014 | |
dc.subject.nvi | VDP::Kjerne- og elementærpartikkelfysikk: 431 | |
dc.type.document | Tidsskriftartikkel | |
dc.type.peerreviewed | Peer reviewed | |
dc.source.issn | 1126-6708 | |
dc.identifier.fulltext | Fulltext https://www.duo.uio.no/bitstream/handle/10852/93443/1/Acharya2021_Article_FirstMeasurementsOfN-subjettin.pdf | |
dc.type.version | PublishedVersion | |
cristin.articleid | 3 | |