Measurement of the Z boson production cross-section in proton-lead collisions at sNN−−−√=8.16TeV

LHCb Collaboration; Simone Bifani; Ryan Calladine; Naomi Cooke; Jonathan Plews; Niladribihari Sahoo; Mark Slater; Mark Slater; Paul Swallow; D. J. D. Thompson

doi:10.1007/JHEP06(2023)022

Measurement of the Z boson production cross-section in proton-lead collisions at sNN−−−√=8.16TeV

LHCb Collaboration, Simone Bifani, Ryan Calladine, Naomi Cooke, Jonathan Plews, Niladribihari Sahoo, Mark Slater, Mark Slater, Paul Swallow, D. J. D. Thompson

Physics and Astronomy

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Abstract

This article presents the first measurement of the differential Z-boson production cross-section in the forward region using proton-lead collisions with the LHCb detector. The dataset was collected at a nucleon-nucleon centre-of-mass energy of sNN−−−√=8.16TeV in 2016, corresponding to an integrated luminosity of 30.8nb−1. The forward-backward ratio and the nuclear modification factors are measured together with the differential cross-section as functions of the Z boson rapidity in the centre-of-mass frame, the transverse momentum of the Z boson and a geometric variable ϕ∗. The results are in good agreement with the predictions from nuclear parton distribution functions, providing strong constraining power at small Bjorken-x.

Original language	English
Article number	22
Pages (from-to)	37
Journal	JHEP
Volume	2023
DOIs	https://doi.org/10.1007/JHEP06(2023)022
Publication status	Published - 5 Jun 2023

Bibliographical note

All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-009.html (LHCb public pages)

Keywords

hep-ex
nucl-ex

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LHCb2023MeasurementZbosonFinal published version, 1 MBLicence: Creative Commons: Attribution (CC BY)

Cite this

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title = "Measurement of the Z boson production cross-section in proton-lead collisions at sNN−−−√=8.16TeV",

abstract = " This article presents the first measurement of the differential Z-boson production cross-section in the forward region using proton-lead collisions with the LHCb detector. The dataset was collected at a nucleon-nucleon centre-of-mass energy of sNN−−−√=8.16TeV in 2016, corresponding to an integrated luminosity of 30.8nb−1. The forward-backward ratio and the nuclear modification factors are measured together with the differential cross-section as functions of the Z boson rapidity in the centre-of-mass frame, the transverse momentum of the Z boson and a geometric variable ϕ∗. The results are in good agreement with the predictions from nuclear parton distribution functions, providing strong constraining power at small Bjorken-x.",

keywords = "hep-ex, nucl-ex",

author = "{LHCb Collaboration} and Nigel Watson and Simone Bifani and Ryan Calladine and Naomi Cooke and Jonathan Plews and Niladribihari Sahoo and Mark Slater and Mark Slater and Paul Swallow and Thompson, {D. J. D.}",

note = "All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-009.html (LHCb public pages)",

year = "2023",

month = jun,

day = "5",

doi = "10.1007/JHEP06(2023)022",

language = "English",

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journal = "JHEP",

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TY - JOUR

T1 - Measurement of the Z boson production cross-section in proton-lead collisions at sNN−−−√=8.16TeV

AU - LHCb Collaboration

AU - Watson, Nigel

AU - Bifani, Simone

AU - Calladine, Ryan

AU - Cooke, Naomi

AU - Plews, Jonathan

AU - Sahoo, Niladribihari

AU - Slater, Mark

AU - Swallow, Paul

AU - Thompson, D. J. D.

N1 - All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-009.html (LHCb public pages)

PY - 2023/6/5

Y1 - 2023/6/5

N2 - This article presents the first measurement of the differential Z-boson production cross-section in the forward region using proton-lead collisions with the LHCb detector. The dataset was collected at a nucleon-nucleon centre-of-mass energy of sNN−−−√=8.16TeV in 2016, corresponding to an integrated luminosity of 30.8nb−1. The forward-backward ratio and the nuclear modification factors are measured together with the differential cross-section as functions of the Z boson rapidity in the centre-of-mass frame, the transverse momentum of the Z boson and a geometric variable ϕ∗. The results are in good agreement with the predictions from nuclear parton distribution functions, providing strong constraining power at small Bjorken-x.

AB - This article presents the first measurement of the differential Z-boson production cross-section in the forward region using proton-lead collisions with the LHCb detector. The dataset was collected at a nucleon-nucleon centre-of-mass energy of sNN−−−√=8.16TeV in 2016, corresponding to an integrated luminosity of 30.8nb−1. The forward-backward ratio and the nuclear modification factors are measured together with the differential cross-section as functions of the Z boson rapidity in the centre-of-mass frame, the transverse momentum of the Z boson and a geometric variable ϕ∗. The results are in good agreement with the predictions from nuclear parton distribution functions, providing strong constraining power at small Bjorken-x.

KW - hep-ex

KW - nucl-ex

U2 - 10.1007/JHEP06(2023)022

DO - 10.1007/JHEP06(2023)022

M3 - Article

SN - 1126-6708

VL - 2023

SP - 37

JO - JHEP

JF - JHEP

M1 - 22

ER -

Measurement of the Z boson production cross-section in proton-lead collisions at sNN−−−√=8.16TeV

Abstract

Bibliographical note

Keywords

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