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Measurement of the nuclear modification factor of b-jets in 5.02 TeV Pb+Pb collisions with the ATLAS detector

descriptionPublicationkeyboard_double_arrow_right Article , Research , Preprint , Other literature type 25 May 2023Embargo end date: 01 Jan 2022 Czech Republic, Italy, Turkey, Italy, China (People's Republic of), Australia, United States, Spain, Germany, United Kingdom, Italy, France, Italy, South Africa, Germany, Turkey, United Kingdom, Australia, Italy, Netherlands, Italy, Italy, Italy, Italy, Italy, South Africa, Germany, United Kingdom, Italy, Norway, Netherlands, Turkey, Denmark, Netherlands, Poland, Australia, Netherlands, Italy, Turkey, South Africa, Spain, Germany, Czech Republic, South Africa, China (People's Republic of), Chile, Italy, Netherlands, Australia, Germany, Italy, Italy, Sweden, Spain, China (People's Republic of), Norway, United Kingdom, Italy Publisher:Springer Science and Business Media LLCJournal:The European Physical Journal C, volume 83 (eissn: 1434-6052,

Authors: Aad, Georges; Abbott, Braden Keim; Abbott, D. C.; Abeling, Kira; Abidi, Haider; Aboulhorma, Asmaa; Abramowicz, Halina; +193 Authors

Aad, Georges; Abbott, Braden Keim; Abbott, D. C.; Abeling, Kira; Abidi, Haider; Aboulhorma, Asmaa; Abramowicz, Halina; Abreu, Henso; Abulaiti, Yiming; Abusleme Hoffman, A. C.; Acharya, Bobby Samir; Achkar, Baida; Adam, Lennart; Adam Bourdarios, Claire; Adamczyk, Leszek; Adamek, Lukas; Addepalli, Sagar; Adelman, Jahred; Adiguzel, Aytul; Adorni Braccesi Chiassi, Sofia; Adye, Tim; Affolder, Tony; Affolder, A. A.; Afik, Yoav; Agaras, Merve Nazlim; Agarwala, Jinky; Aggarwal, Anamika; Agheorghiesei, Catalin; Aguilar Saavedra, Juan Antonio; Ahmad, Ammara; Ahmadov, Faig; Ahmed, Waleed Syed; Ai, Xiaocong; Aielli, Giulio; Aizenberg, Iakov; Akbiyik, Melike; Åkesson, T. P. A.; Akimov, Andrei; Al Khoury, Konie; Alberghi, Gian Luigi; Albert, Justin; Albicocco, Pietro; Alconada Verzini, M. J.; Alderweireldt, Sara; Aleksa, Martin; Aleksandrov, I. N.; Alexa, Calin; Alexopoulos, Theodoros; Alfonsi, Alice; Alfonsi, Fabrizio; Alhroob, Muhammad; Ali, Babar; Ali, Shahzad; Aliev, Malik; Alimonti, Gianluca; Allaire, Corentin; Allbrooke, Benedict; Allport, Philip Patrick; Aloisio, Alberto; Alonso, Francisco; Alpigiani, Cristiano; Alunno Camelia, Elio; Alvarez Estevez, Manuel; Alviggi, Mariagrazia; Do Amaral Coutinho, Yara; Ambler, Alessandro; Amelung, Christoph; Ames, Christoph; Amidei, Dante; Amor Dos Santos, Susana Patricia; Amoroso, Simone; Amos, Kieran Robert; Amrouche, Cherifa Sabrina; Ananiev, Viktor; Anastopoulos, Christos; Andari, Nansi; Andeen, Timothy Robert; Anders, John Kenneth; Andrean, Stefio Yosse; Andreazza, Attilio; Angelidakis, Stylianos; Angerami, Aaron; Anisenkov, Alexey; Annovi, Alberto; Antel, Claire; Anthony, Matthew Thomas; Antipov, Egor; Antonelli, Mario; Antrim, Daniel Joseph; Anulli, Fabio; Aoki, Masato; Aparisi Pozo, Javier Alberto; Aparo, Marco; Aperio Bella, Ludovica; Appelt, Christian; Aranzabal Barrio, Nordin; Araujo Ferraz, Victor; Arcangeletti, Chiara; Arce, Ayana Tamu; Arena, Eloisa; Arguin, Jean-Francois; Argyropoulos, Spyros; Arling, Jan-Hendrik; Armbruster, Aaron James; Arnaez, Olivier; Arnold, Hannah; Arrubarrena Tame, Zulit Paola; Artoni, Giacomo; Asada, Haruka; Asai, Kanae; Asai, Shoji; Asbah, Nedaa Alexandra; Asimakopoulou, Eleni Myrto; Assahsah, Jihad; Assamagan, Ketevi Adikle; Astalos, Robert; Atkin, Ryan Justin; Atkinson, Markus Julian; Atlay, Naim Bora; Atmani, Hicham; Atmasiddha, Prachi; Augsten, Kamil; Auricchio, Silvia; Auriol, Adrien; Austrup, Volker Andreas; Avner, Gal; Avolio, Giuseppe; Axiotis, Konstantinos; Ayoub, Mohamad Kassem; Azuelos, Georges; Babal, Dominik; Bachacou, Henri; Bachas, Konstantinos; Bachiu, Alexander; Backman, Karl Filip; Badea, Anthony; Bagnaia, Paolo; Bahmani, Marzieh; Bailey, A. J.; Bailey, Virginia; Baines, J. T.; Bakalis, Christos; Baker, Keith; Bakker, Pepijn Johannes; Bakos, Evelin; Bakshi Gupta, Debottam; Balaji, Shyam; Balasubramanian, Rahul; Baldin, Evgenii; Balek, Petr; Ballabene, Eric; Balli, Fabrice; Baltes, Lisa Marie; Balunas, William Keaton; Balz, Johannes; Banas, Elzbieta; Bandieramonte, Marilena; Bandyopadhyay, Anjishnu; Bansal, Shubham; Barak, Liron; Barberio, Elisabetta; Barberis, Dario; Barbero, Marlon Benoit; Barbour, Gregory; Barends, Kevin Nicholas; Barillari, Teresa; Barisits, Martin; Barkeloo, Jason Tyler Colt; Barklow, Tim; Barnett, Michael; Baron, Petr; Baron Moreno, D. A.; Baroncelli, Toni; Baroncelli, A.; Barone, Gaetano; Barr, A. J.; Barranco Navarro, Laura; Barreiro Alonso, Fernando; Barreiro Guimaraes Da Costa, Joao; Barron, Uriel; Barros Teixeira, M. G.; Barsov, Sergey; Bartels, Falk; Bartoldus, Rainer; Barton, Adam Edward; Bartos, Pavol; Basalaev, Artem; Basan, Alexander; Baselga Bacardit, Marta; Bashta, Inna; Bassalat, Ahmed; Basso, Matthew Joseph; Basson, Candice Ruth; Bates, Richard; Batlamous, Souad; Batley, Richard; Batool, Binish; Battaglia, Marco; Bauce, Matteo; Bauer, Patrick;

doi: 10.1140/epjc/s10052-023-11427-9 , 10.3204/pubdb-2023-03713 , 10.3204/pubdb-2023-03772 , 10.48550/arxiv.2204.13530

arXiv: 2204.13530 , http://arxiv.org/abs/2204.13530

Measurement of the nuclear modification factor of b-jets in 5.02 TeV Pb+Pb collisions with the ATLAS detector

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Abstract

AbstractThis paper presents a measurement of b-jet production in Pb+Pb and pp collisions at $$\sqrt{s_{_\text {NN}}}=5.02$$ s NN = 5.02 TeV with the ATLAS detector at the LHC. The measurement uses 260 $$\text {pb}^{-1}$$ pb - 1 of pp collisions collected in 2017 and 1.4 $$\text {nb}^{-1}$$ nb - 1 of Pb+Pb collisions collected in 2018. In both collision systems, jets are reconstructed via the anti-$$k_{t}$$ k t algorithm. The b-jets are identified from a sample of jets containing muons from the semileptonic decay of b-quarks using template fits of the muon momentum relative to the jet axis. In pp collisions, b-jets are reconstructed for radius parameters $$R= 0.2$$ R = 0.2 and $$R= 0.4$$ R = 0.4 , and only $$R= 0.2$$ R = 0.2 jets are used in Pb+Pb collisions. For comparison, inclusive $$R= 0.2$$ R = 0.2 jets are also measured using 1.7 $$\text {nb}^{-1}$$ nb - 1 of Pb+Pb collisions collected in 2018 and the same pp collision data as the b-jet measurement. The nuclear modification factor, $$R_\text {AA}$$ R AA , is calculated for both b-jets and inclusive jets with $$R= 0.2$$ R = 0.2 over the transverse momentum range of 80–290 GeV. The nuclear modification factor for b-jets decreases from peripheral to central collisions. The ratio of the b-jet $$R_\text {AA}$$ R AA to inclusive jet $$R_\text {AA}$$ R AA is also presented and suggests that the $$R_\text {AA}$$ R AA for b-jets is larger than that for inclusive jets in central Pb+Pb collisions. The measurements are compared with theoretical calculations and suggest a role for mass and colour-charge effects in partonic energy loss in heavy-ion collisions.

Countries

Czech Republic, Italy, Turkey, Italy, China (People's Republic of), Australia, United States, Spain, Germany, United Kingdom, Italy, France, Italy, South Africa, Germany, Turkey, United Kingdom, Australia, Italy, Netherlands, Italy, Italy, Italy, Italy, Italy, South Africa, Germany, United Kingdom, Italy, Norway, Netherlands, Turkey, Denmark, Netherlands, Poland, Australia, Netherlands, Italy, Turkey, South Africa, Spain, Germany, Czech Republic, South Africa, China (People's Republic of), Chile, Italy, Netherlands, Australia, Germany, Italy, Italy, Sweden, Spain, China (People's Republic of), Norway, United Kingdom, Italy

Related Organizations

University of Oslo
Norway
University College London
United Kingdom
Instituto de Física de Buenos Aires
Argentina
Max Planck Society
Germany
Roma Tre University
Italy

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Keywords

High Energy Physics, ATLAS experiment, Heavy Ions, heavy ion: scattering, Pb+Pb collisions, heavy ion, scattering, muons, B-jet production, QC770-798, GeV, Astrophysics, Atomic, scattering [pp], High Energy Physics - Experiment, Subatomär fysik, High Energy Physics - Experiment (hep-ex), Particle and Plasma Physics, jet, Subatomic Physics, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], muon: momentum, Nuclear Experiment (nucl-ex), info:eu-repo/classification/ddc/530, impact parameter, Nuclear Experiment, Quantum Physics, jet, bottom, Particle physics, 522, Particle and High Energy Physics, semileptonic decay, ATLAS, Nuclear and Plasma Physics, Nuclear & Particles Physics, heavy ion, Settore FIS/01 - FISICA SPERIMENTALE, QB460-466, p p, CERN LHC Coll, Particle and high energy physics, Physical Sciences, jet: bottom, 51 Physical Sciences, pp collisions, 5107 Particle and High Energy Physics, jets, Pediatric Research Initiative, p p: scattering, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], LHC (Large Hadron Collider), [PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex], energy loss, p p, scattering, FOS: Physical sciences, momentum, LHC, ATLAS, High Energy Physics, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], transverse momentum, Relativistic heavy ions, 530, muon, momentum, bottom, scattering [heavy ion], muon, Nuclear and particle physics. Atomic energy. Radioactivity, 539, TeV, Nuclear, 5020 GeV-cms/nucleon, High Energy Physics, High energy physics, molecular and optical physics, peripheral, sNN=5.02 TeV, lead, ATLAS detector, scattering, bottom, semileptonic decay, nucleus, [No Keywords], 500, Molecular, Física, Astronomía, anti-kT algorithm, Astronomical sciences, Experimental High Energy Physics, 5106 Nuclear and Plasma Physics, measurement, experimental results

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Measurement Of The Nuclear Modification Factor Of B-Jets In 5.02 Tev Pb+Pb Collisions With The Atlas Detector
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