Electron and photon efficiencies in LHC Run 2 with the ATLAS experiment

ATLAS Collaboration; Panagiotis Bellos; Juraj Bracinik; David Charlton; Andrew Chisholm; Harry Cooke; Will George; Laura Gonella; Francesco Gonnella; Chris Hawkes; Stephen Hillier; Karol Krizka; Josh Lomas; Mihaela Marinescu; Thomas Neep; Paul Newman; Konstantinos Nikolopoulos; J. M. Silva; Eleni Skorda; Alexis Stampekis; Jurgen Thomas; Paul Thompson; Gov Virdee; Robert Ward; Alan Watson; Miriam Watson; Chonghao Wu

doi:10.1007/JHEP05(2024)162

Electron and photon efficiencies in LHC Run 2 with the ATLAS experiment

ATLAS Collaboration, Panagiotis Bellos, Juraj Bracinik, David Charlton, Andrew Chisholm, Harry Cooke, Will George, Laura Gonella, Francesco Gonnella, Chris Hawkes, Stephen Hillier, Karol Krizka, Josh Lomas, Mihaela Marinescu, Thomas Neep, Paul Newman, Konstantinos Nikolopoulos, J. M. Silva, Eleni Skorda, Alexis StampekisJurgen Thomas, Paul Thompson, Gov Virdee, Robert Ward, Alan Watson, Miriam Watson, Chonghao Wu

Physics and Astronomy

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Abstract

Precision measurements of electron reconstruction, identification, and isolation efficiencies and photon identification efficiencies are presented. They use the full Run 2 data of pp collisions at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 139 fb⁻¹ collected by the ATLAS experiment during the years 2015-2018. The measured electron identification efficiencies have uncertainties that are around 30%-50% smaller than the previous Run 2 results due to an improved methodology and the inclusion of more data. A better pile-up subtraction method leads to electron isolation efficiencies that are more independent of the amount of pile-up activity. Updated photon identification efficiencies are also presented, using the full Run 2 data. When compared to the previous measurement, a 30%-40% smaller uncertainty is observed on the photon identification efficiencies, thanks to the increased amount of available data.

Original language	English
Article number	162
Number of pages	65
Journal	JHEP
Volume	2024
DOIs	https://doi.org/10.1007/JHEP05(2024)162
Publication status	Published - 14 May 2024

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ATLAS Collaboration, Bellos, P., Bracinik, J., Charlton, D., Chisholm, A., Cooke, H., George, W., Gonella, L., Gonnella, F., Hawkes, C., Hillier, S., Krizka, K., Lomas, J., Marinescu, M., Neep, T., Newman, P., Nikolopoulos, K., Silva, J. M., Skorda, E., ... Wu, C. (2024). Electron and photon efficiencies in LHC Run 2 with the ATLAS experiment. JHEP, 2024, Article 162. https://doi.org/10.1007/JHEP05(2024)162

@article{515d6e57b75740e3833387546a82d9fd,

title = "Electron and photon efficiencies in LHC Run 2 with the ATLAS experiment",

abstract = "Precision measurements of electron reconstruction, identification, and isolation efficiencies and photon identification efficiencies are presented. They use the full Run 2 data of pp collisions at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 139 fb−1 collected by the ATLAS experiment during the years 2015-2018. The measured electron identification efficiencies have uncertainties that are around 30%-50% smaller than the previous Run 2 results due to an improved methodology and the inclusion of more data. A better pile-up subtraction method leads to electron isolation efficiencies that are more independent of the amount of pile-up activity. Updated photon identification efficiencies are also presented, using the full Run 2 data. When compared to the previous measurement, a 30%-40% smaller uncertainty is observed on the photon identification efficiencies, thanks to the increased amount of available data.",

author = "{ATLAS Collaboration} and Phil Allport and Adrien Auriol and Panagiotis Bellos and Juraj Bracinik and David Charlton and Andrew Chisholm and Harry Cooke and Will George and Laura Gonella and Francesco Gonnella and Chris Hawkes and Stephen Hillier and Karol Krizka and Josh Lomas and Mihaela Marinescu and Thomas Neep and Paul Newman and Konstantinos Nikolopoulos and Silva, {J. M.} and Eleni Skorda and Alexis Stampekis and Jurgen Thomas and Paul Thompson and Gov Virdee and Robert Ward and Alan Watson and Miriam Watson and Chonghao Wu",

year = "2024",

month = may,

day = "14",

doi = "10.1007/JHEP05(2024)162",

language = "English",

volume = "2024",

journal = "JHEP",

issn = "1126-6708",

publisher = "Springer",

}

ATLAS Collaboration, Bellos, P , Bracinik, J , Charlton, D , Chisholm, A, Cooke, H, George, W, Gonella, L, Gonnella, F, Hawkes, C, Hillier, S , Krizka, K, Lomas, J, Marinescu, M, Neep, T , Newman, P , Nikolopoulos, K, Silva, JM, Skorda, E, Stampekis, A, Thomas, J , Thompson, P, Virdee, G, Ward, R, Watson, A , Watson, M & Wu, C 2024, 'Electron and photon efficiencies in LHC Run 2 with the ATLAS experiment', JHEP, vol. 2024, 162. https://doi.org/10.1007/JHEP05(2024)162

TY - JOUR

T1 - Electron and photon efficiencies in LHC Run 2 with the ATLAS experiment

AU - ATLAS Collaboration

AU - Allport, Phil

AU - Auriol, Adrien

AU - Bellos, Panagiotis

AU - Bracinik, Juraj

AU - Charlton, David

AU - Chisholm, Andrew

AU - Cooke, Harry

AU - George, Will

AU - Gonella, Laura

AU - Gonnella, Francesco

AU - Hawkes, Chris

AU - Hillier, Stephen

AU - Krizka, Karol

AU - Lomas, Josh

AU - Marinescu, Mihaela

AU - Neep, Thomas

AU - Newman, Paul

AU - Nikolopoulos, Konstantinos

AU - Silva, J. M.

AU - Skorda, Eleni

AU - Stampekis, Alexis

AU - Thomas, Jurgen

AU - Thompson, Paul

AU - Virdee, Gov

AU - Ward, Robert

AU - Watson, Alan

AU - Watson, Miriam

AU - Wu, Chonghao

PY - 2024/5/14

Y1 - 2024/5/14

N2 - Precision measurements of electron reconstruction, identification, and isolation efficiencies and photon identification efficiencies are presented. They use the full Run 2 data of pp collisions at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 139 fb−1 collected by the ATLAS experiment during the years 2015-2018. The measured electron identification efficiencies have uncertainties that are around 30%-50% smaller than the previous Run 2 results due to an improved methodology and the inclusion of more data. A better pile-up subtraction method leads to electron isolation efficiencies that are more independent of the amount of pile-up activity. Updated photon identification efficiencies are also presented, using the full Run 2 data. When compared to the previous measurement, a 30%-40% smaller uncertainty is observed on the photon identification efficiencies, thanks to the increased amount of available data.

AB - Precision measurements of electron reconstruction, identification, and isolation efficiencies and photon identification efficiencies are presented. They use the full Run 2 data of pp collisions at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 139 fb−1 collected by the ATLAS experiment during the years 2015-2018. The measured electron identification efficiencies have uncertainties that are around 30%-50% smaller than the previous Run 2 results due to an improved methodology and the inclusion of more data. A better pile-up subtraction method leads to electron isolation efficiencies that are more independent of the amount of pile-up activity. Updated photon identification efficiencies are also presented, using the full Run 2 data. When compared to the previous measurement, a 30%-40% smaller uncertainty is observed on the photon identification efficiencies, thanks to the increased amount of available data.

UR - https://www.springer.com/journal/13130

U2 - 10.1007/JHEP05(2024)162

DO - 10.1007/JHEP05(2024)162

M3 - Article

SN - 1126-6708

VL - 2024

JO - JHEP

JF - JHEP

M1 - 162

ER -

Electron and photon efficiencies in LHC Run 2 with the ATLAS experiment

Abstract

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