Evidence for light-by-light scattering in heavy-ion collisions with the ATLAS detector at the LHC

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F17%3A00487153" target="_blank" >RIV/68378271:_____/17:00487153 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21220/17:00319723 RIV/68407700:21340/17:00319723 RIV/68407700:21670/17:00319723 RIV/00216208:11320/17:10369440 RIV/61989592:15310/17:73583764

Result on the web

<a href="http://dx.doi.org/10.1038/NPHYS4208" target="_blank" >http://dx.doi.org/10.1038/NPHYS4208</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/NPHYS4208" target="_blank" >10.1038/NPHYS4208</a>

Result language

angličtina

Original language name

Evidence for light-by-light scattering in heavy-ion collisions with the ATLAS detector at the LHC

Original language description

Light-by-light scattering (γγ→γγ) is a quantum-mechanical process that is forbidden in the classical theory of electrodynamics. This reaction is accessible at the Large Hadron Collider thanks to the large electromagnetic field strengths generated by ultra-relativistic colliding lead (Pb) ions. Using 480 μb−1 of Pb+Pb collision data recorded at a centre-of-mass energy per nucleon pair of 5.02 TeV by the ATLAS detector, the ATLAS Collaboration reports evidence for the γγ→γγ reaction. A total of 13 candidate events are observed with an expected background of 2.6±0.7 events. After background subtraction and analysis corrections, the fiducial cross section of the process Pb+Pb(γγ)→Pb(∗)+Pb(∗)γγ, for photon transverse energy ET>3 GeV, photon absolute pseudorapidity |η|<2.4, diphoton invariant mass greater than 6 GeV, diphoton transverse momentum lower than 2 GeV and diphoton acoplanarity below 0.01, is measured to be 70 ± 24 (stat.) ± 17 (syst.) nb, which is in agreement with Standard Model predictions.n

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10303 - Particles and field physics

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Nature Physics

ISSN

1745-2473

e-ISSN

—

Volume of the periodical

13

Issue of the periodical within the volume

9

Country of publishing house

GB - UNITED KINGDOM

Number of pages

16

Pages from-to

852-868

UT code for WoS article

000409235100017

EID of the result in the Scopus database

2-s2.0-85028933316