prikaz prve stranice dokumenta Direct observation of the dead-cone effect in quantum chromodynamics
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Scientific paper - Original scientific paper
Direct observation of the dead-cone effect in quantum chromodynamics
Nature, 605 (2022), 7910; 440-446. https://doi.org/10.1038/s41586-022-04572-w
(ALICE Collaboration) Acharya, S.; ...; Erhardt, Filip; ...; Gotovac, Sven; ...; Jerčić, Marko; ...; Karatović, David; ...; Lončar, Petra; ...; Mudnić, Eugen; ...; Planinić, Mirko; ...; Poljak, Nikola; ...; Vicković, Linda; ...; Zurlo, N. More authors...

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Acharya, S., Erhardt, F., Gotovac, S., Jerčić, M., Karatović, D., Lončar, P. ... Zurlo, N. (2022). Direct observation of the dead-cone effect in quantum chromodynamics. Nature, 605. (7910), 440-446. doi: 10.1038/s41586-022-04572-w

Acharya, S., et al. "Direct observation of the dead-cone effect in quantum chromodynamics." Nature, vol. 605, no. 7910, 2022, pp. 440-446. https://doi.org/10.1038/s41586-022-04572-w

Acharya, S., Filip Erhardt, Sven Gotovac, Marko Jerčić, David Karatović, Petra Lončar, Eugen Mudnić, et al. "Direct observation of the dead-cone effect in quantum chromodynamics." Nature 605, no. 7910 (2022): 440-446. https://doi.org/10.1038/s41586-022-04572-w

Acharya, S., et al. (2022) 'Direct observation of the dead-cone effect in quantum chromodynamics', Nature, 605(7910), pp. 440-446. doi: 10.1038/s41586-022-04572-w

Acharya S, Erhardt F, Gotovac S, Jerčić M, Karatović D, Lončar P, and sur.. Direct observation of the dead-cone effect in quantum chromodynamics. Nature [Internet]. 2022 May 18 [cited 2024 December 08];605(7910):440-446. doi: 10.1038/s41586-022-04572-w

S. Acharya, et al., "Direct observation of the dead-cone effect in quantum chromodynamics", Nature, vol. 605, no. 7910, pp. 440-446, May 2022. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:588523. [Accessed: 08 December 2024]

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Metadata
Title (english)Direct observation of the dead-cone effect in quantum chromodynamics
AuthorS. Acharya
Author
...
AuthorFilip Erhardt
Author
...
AuthorSven Gotovac
Author
...
AuthorMarko Jerčić
Author
...
AuthorDavid Karatović
Author
...
AuthorPetra Lončar
Author
...
AuthorEugen Mudnić
Author
...
AuthorMirko Planinić
Author
...
AuthorNikola Poljak
Author
...
AuthorLinda Vicković
Author
...
AuthorN. Zurlo
CollaborationALICE Collaboration
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
In particle collider experiments, elementary particle interactions with large momentum transfer produce quarks and gluons (known as partons) whose evolution is governed by the strong force, as described by the theory of quantum chromodynamics (QCD)1. These partons subsequently emit further partons in a process that can be described as a parton shower2, which culminates in the formation of detectable hadrons. Studying the pattern of the parton shower is one of the key experimental tools for testing QCD. This pattern is expected to depend on the mass of the initiating parton, through a phenomenon known as the dead-cone effect, which predicts a suppression of the gluon spectrum emitted by a heavy quark of mass mQ and energy E, within a cone of angular size mQ/E around the emitter3. Previously, a direct observation of the dead-cone effect in QCD had not been possible, owing to the challenge of reconstructing the cascading quarks and gluons from the experimentally accessible hadrons. We report the direct observation of the QCD dead cone by using new iterative declustering techniques4, 5 to reconstruct the parton shower of charm quarks. This result confirms a fundamental feature of QCD. Furthermore, the measurement of a dead-cone angle constitutes a direct experimental observation of the non-zero mass of the charm quark, which is a fundamental constant in the standard model of particle physics.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titleNature
Numberingvol. 605, no. 7910, pp. 440-446
p-ISSN0028-0836
e-ISSN1476-4687
DOIhttps://doi.org/10.1038/s41586-022-04572-w
URN:NBNurn:nbn:hr:217:588523
Publication2022-05-18
Document URLhttps://www.nature.com/articles/s41586-022-04572-w
Type of resourceText
Access conditionsOpen access
Terms of useLicence Attribution 4.0 International (CC BY 4.0) icon
Public note© The Author(s) 2022, corrected publication 2022. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. Received: 29 June 2021; Accepted: 21 February 2022; Published online: 18 May 2022.
Created on2024-08-31 20:35:03