Coherent $ρ^0$ photoproduction in ultra-peripheral Pb-Pb collisions at $\mathbf{\sqrt{\textit{s}_{\rm NN}}} = 2.76$ TeV

ALICE Collaboration

doi:10.1007/JHEP09(2015)095

Coherent $ρ^0$ photoproduction in ultra-peripheral Pb-Pb collisions at $\mathbf{\sqrt{\textit{s}_{\rm NN}}} = 2.76$ TeV

ALICE Collaboration

Physics and Astronomy

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

25 Citations (Scopus)

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Abstract

We report the first measurement at the LHC of coherent photoproduction of $\rho^0$ mesons in ultra-peripheral Pb-Pb collisions. The invariant mass and transverse momentum distributions for $\rho^0$ production are studied in the $\pi^+ \pi^-$ decay channel at mid-rapidity. The production cross section in the rapidity range $|y| < 0.5 is found to be dσ/dy = 425 ± 10(stat.) − 50 + 42 (sys.) mb. Coherent ρ 0 production is studied with and without requirement of nuclear breakup, and the fractional yields for various breakup scenarios are presented. The results are compared with those from lower energies and with model predictions.

Original language	English
Article number	95
Number of pages	26
Journal	JHEP
Volume	2015
Issue number	9
DOIs	https://doi.org/10.1007/JHEP09(2015)095
Publication status	Published - 15 Sept 2015

Bibliographical note

23 pages, 6 captioned figures, 2 tables, authors from page 18, published version, figures at http://aliceinfo.cern.ch/ArtSubmission/node/1561

Keywords

nucl-ex
hep-ex
Hadron-Hadron scattering

Access to Document

10.1007/JHEP09(2015)095Licence: Creative Commons: Attribution (CC BY)

Adam_Coherent_ρ_0_photoproduction_Journal_of_High_Energy_Physics
Published as above, final version of record available at https://doi.org/10.1007/JHEP09(2015)095. Checked 30/5/18.
Final published version, 970 KBLicence: Creative Commons: Attribution (CC BY)

Birmingham Nuclear Physics Group Consolidated Grant
Jones, P., Evans, P., Freer, M. & Wheldon, C.
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/08/14 → 30/09/18
Project: Research Councils
ALICE Upgrade Bridging Support
Evans, P.
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/08/14 → 31/12/14
Project: Research Councils

Cite this

@article{a88053e99fe6471f9d5c9ce508769d95,

title = "Coherent $ρ^0$ photoproduction in ultra-peripheral Pb-Pb collisions at $\mathbf{\sqrt{\textit{s}_{\rm NN}}} = 2.76$ TeV",

abstract = "We report the first measurement at the LHC of coherent photoproduction of $\rho^0$ mesons in ultra-peripheral Pb-Pb collisions. The invariant mass and transverse momentum distributions for $\rho^0$ production are studied in the $\pi^+ \pi^-$ decay channel at mid-rapidity. The production cross section in the rapidity range $|y| < 0.5 is found to be dσ/dy = 425 ± 10(stat.) − 50 + 42 (sys.) mb. Coherent ρ 0 production is studied with and without requirement of nuclear breakup, and the fractional yields for various breakup scenarios are presented. The results are compared with those from lower energies and with model predictions. ",

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

author = "{ALICE Collaboration} and J Adam and {Villalobos Baillie}, Orlando",

note = "23 pages, 6 captioned figures, 2 tables, authors from page 18, published version, figures at http://aliceinfo.cern.ch/ArtSubmission/node/1561",

year = "2015",

month = sep,

day = "15",

doi = "10.1007/JHEP09(2015)095",

language = "English",

volume = "2015",

journal = "JHEP",

issn = "1126-6708",

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number = "9",

}

TY - JOUR

T1 - Coherent $ρ^0$ photoproduction in ultra-peripheral Pb-Pb collisions at $\mathbf{\sqrt{\textit{s}_{\rm NN}}} = 2.76$ TeV

AU - ALICE Collaboration

AU - Adam, J

AU - Villalobos Baillie, Orlando

N1 - 23 pages, 6 captioned figures, 2 tables, authors from page 18, published version, figures at http://aliceinfo.cern.ch/ArtSubmission/node/1561

PY - 2015/9/15

Y1 - 2015/9/15

N2 - We report the first measurement at the LHC of coherent photoproduction of $\rho^0$ mesons in ultra-peripheral Pb-Pb collisions. The invariant mass and transverse momentum distributions for $\rho^0$ production are studied in the $\pi^+ \pi^-$ decay channel at mid-rapidity. The production cross section in the rapidity range $|y| < 0.5 is found to be dσ/dy = 425 ± 10(stat.) − 50 + 42 (sys.) mb. Coherent ρ 0 production is studied with and without requirement of nuclear breakup, and the fractional yields for various breakup scenarios are presented. The results are compared with those from lower energies and with model predictions.

AB - We report the first measurement at the LHC of coherent photoproduction of $\rho^0$ mesons in ultra-peripheral Pb-Pb collisions. The invariant mass and transverse momentum distributions for $\rho^0$ production are studied in the $\pi^+ \pi^-$ decay channel at mid-rapidity. The production cross section in the rapidity range $|y| < 0.5 is found to be dσ/dy = 425 ± 10(stat.) − 50 + 42 (sys.) mb. Coherent ρ 0 production is studied with and without requirement of nuclear breakup, and the fractional yields for various breakup scenarios are presented. The results are compared with those from lower energies and with model predictions.

KW - nucl-ex

KW - hep-ex

KW - Hadron-Hadron scattering

U2 - 10.1007/JHEP09(2015)095

DO - 10.1007/JHEP09(2015)095

M3 - Article

SN - 1126-6708

VL - 2015

JO - JHEP

JF - JHEP

IS - 9

M1 - 95

ER -

Coherent $ρ^0$ photoproduction in ultra-peripheral Pb-Pb collisions at $\mathbf{\sqrt{\textit{s}_{\rm NN}}} = 2.76$ TeV

Abstract

Bibliographical note

Keywords

Access to Document

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Projects

Birmingham Nuclear Physics Group Consolidated Grant

ALICE Upgrade Bridging Support

Cite this