The production cross section of inclusive isolated photons has been measured by the ALICE experiment at the CERN LHC in pp collisions at centre-of-momentum energy of √s = 13 TeV collected during the LHC Run 2 data-taking period. The measurement is performed by combining the measurements of the electromagnetic calorimeter EMCal and the central tracking detectors ITS and TPC, covering a pseudorapidity range of |ηγ | < 0.67 and a transverse momentum range of 7 < pγ T < 200 GeV/c. The result extends to lower pγ T and xγ T = 2pγ T / √s ranges, the lowest xγ T of any isolated photon measurements to date, extending significantly those measured by the ATLAS and CMS experiments towards lower pγ T at the same collision energy with a small overlap between the measurements. The measurement is compared with next-to-leading order perturbative QCD calculations and the results from the ATLAS and CMS experiments as well as with measurements at other collision energies. The measurement and theory prediction are in agreement with each other within the experimental and theoretical uncertainties.

Null, N., Acharya, S., Adamová, D., Agarwal, A., Aglieri Rinella, G., Aglietta, L., et al. (2025). Measurement of the inclusive isolated-photon production cross section in pp collisions at √s = 13 TeV. EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 85(1), 1-24 [10.1140/epjc/s10052-024-13506-x].

Measurement of the inclusive isolated-photon production cross section in pp collisions at √s = 13 TeV

Agrawal, N.;Alici, A.;Arcelli, S.;Bellini, F.;Colocci, M.;Ercolessi, F.;Jacazio, N.;Malfattore, G.;Romanenko, G.;Rubini, N.;Sabiu, B.;Scioli, G.;Strazzi, S.;Tomassini, S.;
2025

Abstract

The production cross section of inclusive isolated photons has been measured by the ALICE experiment at the CERN LHC in pp collisions at centre-of-momentum energy of √s = 13 TeV collected during the LHC Run 2 data-taking period. The measurement is performed by combining the measurements of the electromagnetic calorimeter EMCal and the central tracking detectors ITS and TPC, covering a pseudorapidity range of |ηγ | < 0.67 and a transverse momentum range of 7 < pγ T < 200 GeV/c. The result extends to lower pγ T and xγ T = 2pγ T / √s ranges, the lowest xγ T of any isolated photon measurements to date, extending significantly those measured by the ATLAS and CMS experiments towards lower pγ T at the same collision energy with a small overlap between the measurements. The measurement is compared with next-to-leading order perturbative QCD calculations and the results from the ATLAS and CMS experiments as well as with measurements at other collision energies. The measurement and theory prediction are in agreement with each other within the experimental and theoretical uncertainties.
2025
Null, N., Acharya, S., Adamová, D., Agarwal, A., Aglieri Rinella, G., Aglietta, L., et al. (2025). Measurement of the inclusive isolated-photon production cross section in pp collisions at √s = 13 TeV. EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 85(1), 1-24 [10.1140/epjc/s10052-024-13506-x].
Null, Null; Acharya, S.; Adamová, D.; Agarwal, A.; Aglieri Rinella, G.; Aglietta, L.; Agnello, M.; Agrawal, N.; Ahammed, Z.; Ahmad, S.; Ahn, S. U.; Ah...espandi
File in questo prodotto:
File Dimensione Formato  
s10052-024-13506-x.pdf

accesso aperto

Tipo: Versione (PDF) editoriale / Version Of Record
Licenza: Licenza per Accesso Aperto. Creative Commons Attribuzione (CCBY)
Dimensione 2.49 MB
Formato Adobe PDF
2.49 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/1047870
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? 4
social impact