Measurement of Elastic Υ Photoproduction at HERA

ZEUS Collaboration

doi:10.1016/S0370-2693(98)01081-8

Measurement of Elastic Υ Photoproduction at HERA

ZEUS Collaboration

Department of Physics

Research output: Contribution to journal › Article › peer-review

Abstract

The photoproduction reaction γp → μ+ μ-p has been studied in ep interactions using the ZEUS detector at HERA. The data sample corresponds to an integrated luminosity of 43.2pb-1. The Υ meson has been observed in photoproduction for the first time. The sum of the products of the elastic Υ(1S), Υ(2S),Υ(3S) photoproduction cross sections with their respective branching ratios is determined to be 13.3 ± 6.0(stat.)-2.3 +2.7(syst.) pb at a mean photon-proton centre of mass energy of 120 GeV. The cross section is above the prediction of a perturbative QCD model. © 1998 Elsevier Science B.V. All rights reserved.

Original language	American English
Pages (from-to)	432-444
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	437
Issue number	3-4
DOIs	https://doi.org/10.1016/S0370-2693(98)01081-8
State	Published - Oct 8 1998

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Physics

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title = "Measurement of Elastic Υ Photoproduction at HERA",

abstract = "The photoproduction reaction γp → μ+ μ-p has been studied in ep interactions using the ZEUS detector at HERA. The data sample corresponds to an integrated luminosity of 43.2pb-1. The Υ meson has been observed in photoproduction for the first time. The sum of the products of the elastic Υ(1S), Υ(2S),Υ(3S) photoproduction cross sections with their respective branching ratios is determined to be 13.3 ± 6.0(stat.)-2.3 +2.7(syst.) pb at a mean photon-proton centre of mass energy of 120 GeV. The cross section is above the prediction of a perturbative QCD model. {\textcopyright} 1998 Elsevier Science B.V. All rights reserved.",

author = "\{ZEUS Collaboration\} and Mattingly, \{Margarita C. K.\}",

year = "1998",

month = oct,

day = "8",

doi = "10.1016/S0370-2693(98)01081-8",

language = "American English",

volume = "437",

pages = "432--444",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

number = "3-4",

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TY - JOUR

T1 - Measurement of Elastic Υ Photoproduction at HERA

AU - ZEUS Collaboration

AU - Mattingly, Margarita C. K.

PY - 1998/10/8

Y1 - 1998/10/8

N2 - The photoproduction reaction γp → μ+ μ-p has been studied in ep interactions using the ZEUS detector at HERA. The data sample corresponds to an integrated luminosity of 43.2pb-1. The Υ meson has been observed in photoproduction for the first time. The sum of the products of the elastic Υ(1S), Υ(2S),Υ(3S) photoproduction cross sections with their respective branching ratios is determined to be 13.3 ± 6.0(stat.)-2.3 +2.7(syst.) pb at a mean photon-proton centre of mass energy of 120 GeV. The cross section is above the prediction of a perturbative QCD model. © 1998 Elsevier Science B.V. All rights reserved.

AB - The photoproduction reaction γp → μ+ μ-p has been studied in ep interactions using the ZEUS detector at HERA. The data sample corresponds to an integrated luminosity of 43.2pb-1. The Υ meson has been observed in photoproduction for the first time. The sum of the products of the elastic Υ(1S), Υ(2S),Υ(3S) photoproduction cross sections with their respective branching ratios is determined to be 13.3 ± 6.0(stat.)-2.3 +2.7(syst.) pb at a mean photon-proton centre of mass energy of 120 GeV. The cross section is above the prediction of a perturbative QCD model. © 1998 Elsevier Science B.V. All rights reserved.

UR - https://digitalcommons.andrews.edu/pubs/2670

U2 - 10.1016/S0370-2693(98)01081-8

DO - 10.1016/S0370-2693(98)01081-8

M3 - Article

VL - 437

SP - 432

EP - 444

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 3-4

ER -

Measurement of Elastic Υ Photoproduction at HERA

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