Measurement of suppression of large-radius jets and its dependence on substructure in Pb + Pb collisions at √sNN = 5.02  TeV with the ATLAS detector

ATLAS Collaboration

doi:10.1103/PhysRevLett.131.172301

Measurement of suppression of large-radius jets and its dependence on substructure in Pb + Pb collisions at √s_NN= 5.02 TeV with the ATLAS detector

ATLAS Collaboration

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

7 Downloads (Pure)

Abstract

This letter presents a measurement of the nuclear modification factor of large-radius jets in √𝑠_𝑁⁢𝑁 = 5.02 TeV Pb+Pb collisions by the ATLAS experiment. The measurement is performed using 1.72 nb⁻¹ and 257 pb⁻¹ of Pb + Pb and 𝑝⁢𝑝 data, respectively. The large-radius jets are reconstructed with the anti-𝑘𝑡 algorithm using a radius parameter of 𝑅 =1.0, by reclustering anti-𝑘𝑡 𝑅 =0.2 jets, and are measured over the transverse momentum (𝑝_𝑇) kinematic range of 158<𝑝_𝑇<1000 GeV and absolute pseudorapidity |𝑦| <2.0. The large-radius jet constituents are further reclustered using the 𝑘𝑡 algorithm in order to obtain the splitting parameters, √𝑑₁₂ and Δ⁢𝑅₁₂, which characterize the transverse momentum scale and angular separation for the hardest splitting in the jet, respectively. The nuclear modification factor, 𝑅𝐴⁢𝐴, obtained by comparing the Pb + Pb jet yields to those in 𝑝⁢𝑝 collisions, is measured as a function of jet transverse momentum (𝑝_𝑇) and √𝑑₁₂ or Δ⁢𝑅₁₂. A significant difference in the quenching of large-radius jets having single subjet and those with more complex substructure is observed. Systematic comparison of jet suppression in terms of 𝑅𝐴⁢𝐴 for different jet definitions is also provided. Presented results support the hypothesis that jets with hard internal splittings lose more energy through quenching and provide a new perspective for understanding the role of jet structure in jet suppression.

Original language	English
Article number	172301
Pages (from-to)	172301-1-172301-22
Number of pages	22
Journal	Physical Review Letters
Volume	131
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.131.172301
Publication status	Published - 27 Oct 2023
Externally published	Yes

Bibliographical note

Copyright the Author(s) 2023. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Access to Document

10.1103/PhysRevLett.131.172301Licence: CC BY

Publisher version (open access)Final published version, 46.9 MBLicence: CC BY

Cite this

@article{a6b0b58c51c9494d8b331c21dd20766e,

title = "Measurement of suppression of large-radius jets and its dependence on substructure in Pb + Pb collisions at √sNN = 5.02 TeV with the ATLAS detector",

abstract = "This letter presents a measurement of the nuclear modification factor of large-radius jets in √𝑠𝑁⁢𝑁 = 5.02 TeV Pb+Pb collisions by the ATLAS experiment. The measurement is performed using 1.72 nb−1 and 257 pb−1 of Pb + Pb and 𝑝⁢𝑝 data, respectively. The large-radius jets are reconstructed with the anti-𝑘𝑡 algorithm using a radius parameter of 𝑅 =1.0, by reclustering anti-𝑘𝑡 𝑅 =0.2 jets, and are measured over the transverse momentum (𝑝𝑇) kinematic range of 158<𝑝𝑇<1000 GeV and absolute pseudorapidity |𝑦| <2.0. The large-radius jet constituents are further reclustered using the 𝑘𝑡 algorithm in order to obtain the splitting parameters, √𝑑12 and Δ⁢𝑅12, which characterize the transverse momentum scale and angular separation for the hardest splitting in the jet, respectively. The nuclear modification factor, 𝑅𝐴⁢𝐴, obtained by comparing the Pb + Pb jet yields to those in 𝑝⁢𝑝 collisions, is measured as a function of jet transverse momentum (𝑝𝑇) and √𝑑12 or Δ⁢𝑅12. A significant difference in the quenching of large-radius jets having single subjet and those with more complex substructure is observed. Systematic comparison of jet suppression in terms of 𝑅𝐴⁢𝐴 for different jet definitions is also provided. Presented results support the hypothesis that jets with hard internal splittings lose more energy through quenching and provide a new perspective for understanding the role of jet structure in jet suppression.",

author = "\{ATLAS Collaboration\} and G. Aad and B. Abbott and Abbott, \{D. C.\} and K. Abeling and Abidi, \{S. H.\} and A. Aboulhorma and H. Abramowicz and H. Abreu and Y. Abulaiti and \{Abusleme Hoffman\}, \{A. C.\} and B. Achkar and Acharya, \{B. S.\} and \{Adam Bourdarios\}, C. and L. Adamczyk and L. Adamek and Addepalli, \{S. V.\} and J. Adelman and A. Adiguzel and S. Adorni and T. Adye and Affolder, \{A. A.\} and Y. Afik and Agaras, \{M. N.\} and J. Agarwala and A. Aggarwal and C. Agheorghiesei and Aguilar-Saavedra, \{J. A.\} and A. Ahmad and F. Ahmadov and Ahmed, \{W. S.\} and S. Ahuja and X. Ai and G. Aielli and I. Aizenberg and M. Akbiyik and {\AA}kesson, \{T. P.A.\} and Akimov, \{A. V.\} and \{Al Khoury\}, K. and Alberghi, \{G. L.\} and J. Albert and P. Albicocco and S. Alderweireldt and M. Aleksa and Aleksandrov, \{I. N.\} and C. Alexa and T. Alexopoulos and A. Alfonsi and F. Alfonsi and M. Alhroob and B. Ali and S. Ali and M. Aliev and G. Alimonti and W. Alkakhi and C. Allaire and Allbrooke, \{B. M.M.\} and Allport, \{P. P.\} and A. Aloisio and F. Alonso and C. Alpigiani and \{Alunno Camelia\}, E. and \{Alvarez Estevez\}, M. and Alviggi, \{M. G.\} and M. Aly and \{Amaral Coutinho\}, Y. and A. Ambler and C. Amelung and M. Amerl and Ames, \{C. G.\} and D. Amidei and \{Amor Dos Santos\}, \{S. P.\} and S. Amoroso and Amos, \{K. R.\} and V. Ananiev and C. Anastopoulos and T. Andeen and Anders, \{J. K.\} and Andrean, \{S. Y.\} and A. Andreazza and S. Angelidakis and A. Angerami and Anisenkov, \{A. V.\} and A. Annovi and C. Antel and Anthony, \{M. T.\} and E. Antipov and M. Antonelli and Antrim, \{D. J.A.\} and F. Anulli and M. Aoki and T. Aoki and \{Aparisi Pozo\}, \{J. A.\} and Aparo, \{M. A.\} and \{Aperio Bella\}, L. and C. Appelt and N. Aranzabal and \{Araujo Ferraz\}, V. and C. Arcangeletti and Arce, \{A. T.H.\} and E. Arena and Arguin, \{J. F.\} and S. Argyropoulos and Arling, \{J. H.\} and Armbruster, \{A. J.\} and O. Arnaez and H. Arnold and \{Arrubarrena Tame\}, \{Z. P.\} and G. Artoni and H. Asada and K. Asai and S. Asai and Asbah, \{N. A.\} and J. Assahsah and K. Assamagan and R. Astalos and Atkin, \{R. J.\} and M. Atkinson and Atlay, \{N. B.\} and H. Atmani and Atmasiddha, \{P. A.\} and K. Augsten and S. Auricchio and Auriol, \{A. D.\} and Austrup, \{V. A.\} and G. Avner and G. Avolio and K. Axiotis and Ayoub, \{M. K.\} and G. Azuelos and D. Babal and H. Bachacou and K. Bachas and A. Bachiu and F. Backman and A. Badea and P. Bagnaia and M. Bahmani and Bailey, \{A. J.\} and Bailey, \{V. R.\} and Baines, \{J. T.\} and C. Bakalis and Baker, \{O. K.\} and Bakker, \{P. J.\} and E. Bakos and \{Bakshi Gupta\}, D. and S. Balaji and R. Balasubramanian and Baldin, \{E. M.\} and P. Balek and E. Ballabene and F. Balli and Baltes, \{L. M.\} and Balunas, \{W. K.\} and J. Balz and E. Banas and M. Bandieramonte and A. Bandyopadhyay and S. Bansal and L. Barak and Barberio, \{E. L.\} and D. Barberis and M. Barbero and G. Barbour and Barends, \{K. N.\} and T. Barillari and Barisits, \{M. S.\} and T. Barklow and Barnett, \{R. M.\} and P. Baron and \{Baron Moreno\}, \{D. A.\} and A. Baroncelli and G. Barone and Barr, \{A. J.\} and \{Barranco Navarro\}, L. and F. Barreiro and \{Barreiro Guimar{\~a}es da Costa\}, J. and U. Barron and \{Barros Teixeira\}, \{M. G.\} and S. Barsov and F. Bartels and R. Bartoldus and Barton, \{A. E.\} and P. Bartos and A. Basalaev and A. Basan and M. Baselga and I. Bashta and A. Bassalat and Basso, \{M. J.\} and Basson, \{C. R.\} and Bates, \{R. L.\} and S. Batlamous and Batley, \{J. R.\} and B. Batool and M. Battaglia and D. Battulga and M. Bauce and P. Bauer and A. Bayirli and Beacham, \{J. B.\} and T. Beau and Beauchemin, \{P. H.\} and F. Becherer and P. Bechtle and Beck, \{H. P.\} and K. Becker and Beddall, \{A. J.\} and Bednyakov, \{V. A.\} and Bee, \{C. P.\} and Beemster, \{L. J.\} and Beermann, \{T. A.\} and M. Begalli and M. Begel and A. Behera and Behr, \{J. K.\} and \{Beirao Da Cruz E Silva\}, C. and Beirer, \{J. F.\} and F. Beisiegel and M. Belfkir and G. Bella and L. Bellagamba and A. Bellerive and P. Bellos and K. Beloborodov and K. Belotskiy and Belyaev, \{N. L.\} and D. Benchekroun and F. Bendebba and Y. Benhammou and Benjamin, \{D. P.\} and M. Benoit and Bensinger, \{J. R.\} and S. Bentvelsen and L. Beresford and M. Beretta and D. Berge and \{Bergeaas Kuutmann\}, E. and N. Berger and B. Bergmann and J. Beringer and S. Berlendis and G. Bernardi and C. Bernius and Bernlochner, \{F. U.\} and T. Berry and P. Berta and A. Berthold and Bertram, \{I. A.\} and S. Bethke and J. Shojaii",

note = "Copyright the Author(s) 2023. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.",

year = "2023",

month = oct,

day = "27",

doi = "10.1103/PhysRevLett.131.172301",

language = "English",

volume = "131",

pages = "172301--1--172301--22",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "17",

}

TY - JOUR

T1 - Measurement of suppression of large-radius jets and its dependence on substructure in Pb + Pb collisions at √sNN = 5.02 TeV with the ATLAS detector

AU - ATLAS Collaboration

AU - Aad, G.

AU - Abbott, B.

AU - Abbott, D. C.

AU - Abeling, K.

AU - Abidi, S. H.

AU - Aboulhorma, A.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abulaiti, Y.

AU - Abusleme Hoffman, A. C.

AU - Achkar, B.

AU - Acharya, B. S.

AU - Adam Bourdarios, C.

AU - Adamczyk, L.

AU - Adamek, L.

AU - Addepalli, S. V.

AU - Adelman, J.

AU - Adiguzel, A.

AU - Adorni, S.

AU - Adye, T.

AU - Affolder, A. A.

AU - Afik, Y.

AU - Agaras, M. N.

AU - Agarwala, J.

AU - Aggarwal, A.

AU - Agheorghiesei, C.

AU - Aguilar-Saavedra, J. A.

AU - Ahmad, A.

AU - Ahmadov, F.

AU - Ahmed, W. S.

AU - Ahuja, S.

AU - Ai, X.

AU - Aielli, G.

AU - Aizenberg, I.

AU - Akbiyik, M.

AU - Åkesson, T. P.A.

AU - Akimov, A. V.

AU - Al Khoury, K.

AU - Alberghi, G. L.

AU - Albert, J.

AU - Albicocco, P.

AU - Alderweireldt, S.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Alexa, C.

AU - Alexopoulos, T.

AU - Alfonsi, A.

AU - Alfonsi, F.

AU - Alhroob, M.

AU - Ali, B.

AU - Ali, S.

AU - Aliev, M.

AU - Alimonti, G.

AU - Alkakhi, W.

AU - Allaire, C.

AU - Allbrooke, B. M.M.

AU - Allport, P. P.

AU - Aloisio, A.

AU - Alonso, F.

AU - Alpigiani, C.

AU - Alunno Camelia, E.

AU - Alvarez Estevez, M.

AU - Alviggi, M. G.

AU - Aly, M.

AU - Amaral Coutinho, Y.

AU - Ambler, A.

AU - Amelung, C.

AU - Amerl, M.

AU - Ames, C. G.

AU - Amidei, D.

AU - Amor Dos Santos, S. P.

AU - Amoroso, S.

AU - Amos, K. R.

AU - Ananiev, V.

AU - Anastopoulos, C.

AU - Andeen, T.

AU - Anders, J. K.

AU - Andrean, S. Y.

AU - Andreazza, A.

AU - Angelidakis, S.

AU - Angerami, A.

AU - Anisenkov, A. V.

AU - Annovi, A.

AU - Antel, C.

AU - Anthony, M. T.

AU - Antipov, E.

AU - Antonelli, M.

AU - Antrim, D. J.A.

AU - Anulli, F.

AU - Aoki, M.

AU - Aoki, T.

AU - Aparisi Pozo, J. A.

AU - Aparo, M. A.

AU - Aperio Bella, L.

AU - Appelt, C.

AU - Aranzabal, N.

AU - Araujo Ferraz, V.

AU - Arcangeletti, C.

AU - Arce, A. T.H.

AU - Arena, E.

AU - Arguin, J. F.

AU - Argyropoulos, S.

AU - Arling, J. H.

AU - Armbruster, A. J.

AU - Arnaez, O.

AU - Arnold, H.

AU - Arrubarrena Tame, Z. P.

AU - Artoni, G.

AU - Asada, H.

AU - Asai, K.

AU - Asai, S.

AU - Asbah, N. A.

AU - Assahsah, J.

AU - Assamagan, K.

AU - Astalos, R.

AU - Atkin, R. J.

AU - Atkinson, M.

AU - Atlay, N. B.

AU - Atmani, H.

AU - Atmasiddha, P. A.

AU - Augsten, K.

AU - Auricchio, S.

AU - Auriol, A. D.

AU - Austrup, V. A.

AU - Avner, G.

AU - Avolio, G.

AU - Axiotis, K.

AU - Ayoub, M. K.

AU - Azuelos, G.

AU - Babal, D.

AU - Bachacou, H.

AU - Bachas, K.

AU - Bachiu, A.

AU - Backman, F.

AU - Badea, A.

AU - Bagnaia, P.

AU - Bahmani, M.

AU - Bailey, A. J.

AU - Bailey, V. R.

AU - Baines, J. T.

AU - Bakalis, C.

AU - Baker, O. K.

AU - Bakker, P. J.

AU - Bakos, E.

AU - Bakshi Gupta, D.

AU - Balaji, S.

AU - Balasubramanian, R.

AU - Baldin, E. M.

AU - Balek, P.

AU - Ballabene, E.

AU - Balli, F.

AU - Baltes, L. M.

AU - Balunas, W. K.

AU - Balz, J.

AU - Banas, E.

AU - Bandieramonte, M.

AU - Bandyopadhyay, A.

AU - Bansal, S.

AU - Barak, L.

AU - Barberio, E. L.

AU - Barberis, D.

AU - Barbero, M.

AU - Barbour, G.

AU - Barends, K. N.

AU - Barillari, T.

AU - Barisits, M. S.

AU - Barklow, T.

AU - Barnett, R. M.

AU - Baron, P.

AU - Baron Moreno, D. A.

AU - Baroncelli, A.

AU - Barone, G.

AU - Barr, A. J.

AU - Barranco Navarro, L.

AU - Barreiro, F.

AU - Barreiro Guimarães da Costa, J.

AU - Barron, U.

AU - Barros Teixeira, M. G.

AU - Barsov, S.

AU - Bartels, F.

AU - Bartoldus, R.

AU - Barton, A. E.

AU - Bartos, P.

AU - Basalaev, A.

AU - Basan, A.

AU - Baselga, M.

AU - Bashta, I.

AU - Bassalat, A.

AU - Basso, M. J.

AU - Basson, C. R.

AU - Bates, R. L.

AU - Batlamous, S.

AU - Batley, J. R.

AU - Batool, B.

AU - Battaglia, M.

AU - Battulga, D.

AU - Bauce, M.

AU - Bauer, P.

AU - Bayirli, A.

AU - Beacham, J. B.

AU - Beau, T.

AU - Beauchemin, P. H.

AU - Becherer, F.

AU - Bechtle, P.

AU - Beck, H. P.

AU - Becker, K.

AU - Beddall, A. J.

AU - Bednyakov, V. A.

AU - Bee, C. P.

AU - Beemster, L. J.

AU - Beermann, T. A.

AU - Begalli, M.

AU - Begel, M.

AU - Behera, A.

AU - Behr, J. K.

AU - Beirao Da Cruz E Silva, C.

AU - Beirer, J. F.

AU - Beisiegel, F.

AU - Belfkir, M.

AU - Bella, G.

AU - Bellagamba, L.

AU - Bellerive, A.

AU - Bellos, P.

AU - Beloborodov, K.

AU - Belotskiy, K.

AU - Belyaev, N. L.

AU - Benchekroun, D.

AU - Bendebba, F.

AU - Benhammou, Y.

AU - Benjamin, D. P.

AU - Benoit, M.

AU - Bensinger, J. R.

AU - Bentvelsen, S.

AU - Beresford, L.

AU - Beretta, M.

AU - Berge, D.

AU - Bergeaas Kuutmann, E.

AU - Berger, N.

AU - Bergmann, B.

AU - Beringer, J.

AU - Berlendis, S.

AU - Bernardi, G.

AU - Bernius, C.

AU - Bernlochner, F. U.

AU - Berry, T.

AU - Berta, P.

AU - Berthold, A.

AU - Bertram, I. A.

AU - Bethke, S.

AU - Shojaii, J.

N1 - Copyright the Author(s) 2023. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

PY - 2023/10/27

Y1 - 2023/10/27

N2 - This letter presents a measurement of the nuclear modification factor of large-radius jets in √𝑠𝑁⁢𝑁 = 5.02 TeV Pb+Pb collisions by the ATLAS experiment. The measurement is performed using 1.72 nb−1 and 257 pb−1 of Pb + Pb and 𝑝⁢𝑝 data, respectively. The large-radius jets are reconstructed with the anti-𝑘𝑡 algorithm using a radius parameter of 𝑅 =1.0, by reclustering anti-𝑘𝑡 𝑅 =0.2 jets, and are measured over the transverse momentum (𝑝𝑇) kinematic range of 158<𝑝𝑇<1000 GeV and absolute pseudorapidity |𝑦| <2.0. The large-radius jet constituents are further reclustered using the 𝑘𝑡 algorithm in order to obtain the splitting parameters, √𝑑12 and Δ⁢𝑅12, which characterize the transverse momentum scale and angular separation for the hardest splitting in the jet, respectively. The nuclear modification factor, 𝑅𝐴⁢𝐴, obtained by comparing the Pb + Pb jet yields to those in 𝑝⁢𝑝 collisions, is measured as a function of jet transverse momentum (𝑝𝑇) and √𝑑12 or Δ⁢𝑅12. A significant difference in the quenching of large-radius jets having single subjet and those with more complex substructure is observed. Systematic comparison of jet suppression in terms of 𝑅𝐴⁢𝐴 for different jet definitions is also provided. Presented results support the hypothesis that jets with hard internal splittings lose more energy through quenching and provide a new perspective for understanding the role of jet structure in jet suppression.

AB - This letter presents a measurement of the nuclear modification factor of large-radius jets in √𝑠𝑁⁢𝑁 = 5.02 TeV Pb+Pb collisions by the ATLAS experiment. The measurement is performed using 1.72 nb−1 and 257 pb−1 of Pb + Pb and 𝑝⁢𝑝 data, respectively. The large-radius jets are reconstructed with the anti-𝑘𝑡 algorithm using a radius parameter of 𝑅 =1.0, by reclustering anti-𝑘𝑡 𝑅 =0.2 jets, and are measured over the transverse momentum (𝑝𝑇) kinematic range of 158<𝑝𝑇<1000 GeV and absolute pseudorapidity |𝑦| <2.0. The large-radius jet constituents are further reclustered using the 𝑘𝑡 algorithm in order to obtain the splitting parameters, √𝑑12 and Δ⁢𝑅12, which characterize the transverse momentum scale and angular separation for the hardest splitting in the jet, respectively. The nuclear modification factor, 𝑅𝐴⁢𝐴, obtained by comparing the Pb + Pb jet yields to those in 𝑝⁢𝑝 collisions, is measured as a function of jet transverse momentum (𝑝𝑇) and √𝑑12 or Δ⁢𝑅12. A significant difference in the quenching of large-radius jets having single subjet and those with more complex substructure is observed. Systematic comparison of jet suppression in terms of 𝑅𝐴⁢𝐴 for different jet definitions is also provided. Presented results support the hypothesis that jets with hard internal splittings lose more energy through quenching and provide a new perspective for understanding the role of jet structure in jet suppression.

UR - https://www.scopus.com/pages/publications/85176743787

U2 - 10.1103/PhysRevLett.131.172301

DO - 10.1103/PhysRevLett.131.172301

M3 - Article

C2 - 37955510

AN - SCOPUS:85176743787

SN - 0031-9007

VL - 131

SP - 172301-1-172301-22

JO - Physical Review Letters

JF - Physical Review Letters

IS - 17

M1 - 172301

ER -

Measurement of suppression of large-radius jets and its dependence on substructure in Pb + Pb collisions at √s_NN= 5.02 TeV with the ATLAS detector

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