Beam-beam effects on the luminosity measurement at LEP and the number of light neutrino species

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Beam-beam effects on the luminosity measurement at LEP and the number of light neutrino species. / Voutsinas, Georgios; Perez, Emmanuel; Dam, Mogens; Janot, Patrick.

I: Physics Letters B, Bind 800, 135068, 10.01.2020.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt

Harvard

Voutsinas, G, Perez, E, Dam, M & Janot, P 2020, 'Beam-beam effects on the luminosity measurement at LEP and the number of light neutrino species', Physics Letters B, bind 800, 135068. https://doi.org/10.1016/j.physletb.2019.135068

APA

Voutsinas, G., Perez, E., Dam, M., & Janot, P. (2020). Beam-beam effects on the luminosity measurement at LEP and the number of light neutrino species. Physics Letters B, 800, [135068]. https://doi.org/10.1016/j.physletb.2019.135068

Vancouver

Voutsinas G, Perez E, Dam M, Janot P. Beam-beam effects on the luminosity measurement at LEP and the number of light neutrino species. Physics Letters B. 2020 jan. 10;800. 135068. https://doi.org/10.1016/j.physletb.2019.135068

Author

Voutsinas, Georgios ; Perez, Emmanuel ; Dam, Mogens ; Janot, Patrick. / Beam-beam effects on the luminosity measurement at LEP and the number of light neutrino species. I: Physics Letters B. 2020 ; Bind 800.

Bibtex

@article{f00dbaabc8aa45129b32c998f0bcc026,
title = "Beam-beam effects on the luminosity measurement at LEP and the number of light neutrino species",
abstract = "In e(+)e(-) collisions, electromagnetic effects caused by large charge density bunches modify the effective acceptance of the luminometer system of the experiments. These effects consequently bias the luminosity measurement from the rate of low-angle Bhabha interactions e(+)e(-) -> e(+)e(-). Surprisingly enough, the magnitude of this bias is found to yield an underestimation of the integrated luminosity measured by the LEP experiments by about 0.1%, significantly larger than the reported experimental uncertainties. When accounted for, this effect modifies the number of light neutrino species determined at LEP from the measurement of the hadronic cross section at the Z peak. (C) 2019 The Authors. Published by Elsevier B.V.",
keywords = "FORWARD-BACKWARD ASYMMETRIES, Z-RESONANCE PARAMETERS, CROSS-SECTIONS, DETECTOR",
author = "Georgios Voutsinas and Emmanuel Perez and Mogens Dam and Patrick Janot",
year = "2020",
month = jan,
day = "10",
doi = "10.1016/j.physletb.2019.135068",
language = "English",
volume = "800",
journal = "Physics Letters B: Particle Physics, Nuclear Physics and Cosmology",
issn = "0370-2693",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Beam-beam effects on the luminosity measurement at LEP and the number of light neutrino species

AU - Voutsinas, Georgios

AU - Perez, Emmanuel

AU - Dam, Mogens

AU - Janot, Patrick

PY - 2020/1/10

Y1 - 2020/1/10

N2 - In e(+)e(-) collisions, electromagnetic effects caused by large charge density bunches modify the effective acceptance of the luminometer system of the experiments. These effects consequently bias the luminosity measurement from the rate of low-angle Bhabha interactions e(+)e(-) -> e(+)e(-). Surprisingly enough, the magnitude of this bias is found to yield an underestimation of the integrated luminosity measured by the LEP experiments by about 0.1%, significantly larger than the reported experimental uncertainties. When accounted for, this effect modifies the number of light neutrino species determined at LEP from the measurement of the hadronic cross section at the Z peak. (C) 2019 The Authors. Published by Elsevier B.V.

AB - In e(+)e(-) collisions, electromagnetic effects caused by large charge density bunches modify the effective acceptance of the luminometer system of the experiments. These effects consequently bias the luminosity measurement from the rate of low-angle Bhabha interactions e(+)e(-) -> e(+)e(-). Surprisingly enough, the magnitude of this bias is found to yield an underestimation of the integrated luminosity measured by the LEP experiments by about 0.1%, significantly larger than the reported experimental uncertainties. When accounted for, this effect modifies the number of light neutrino species determined at LEP from the measurement of the hadronic cross section at the Z peak. (C) 2019 The Authors. Published by Elsevier B.V.

KW - FORWARD-BACKWARD ASYMMETRIES

KW - Z-RESONANCE PARAMETERS

KW - CROSS-SECTIONS

KW - DETECTOR

U2 - 10.1016/j.physletb.2019.135068

DO - 10.1016/j.physletb.2019.135068

M3 - Journal article

VL - 800

JO - Physics Letters B: Particle Physics, Nuclear Physics and Cosmology

JF - Physics Letters B: Particle Physics, Nuclear Physics and Cosmology

SN - 0370-2693

M1 - 135068

ER -

ID: 248290848