Emergence of Long-Range Angular Correlations in Low-Multiplicity Proton-Proton Collisions

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00598018" target="_blank" >RIV/68378271:_____/24:00598018 - isvavai.cz</a>

Alternative codes found

RIV/61389005:_____/24:00598018 RIV/68407700:21340/24:00377123

Result on the web

<a href="https://doi.org/10.1103/PhysRevLett.132.172302" target="_blank" >https://doi.org/10.1103/PhysRevLett.132.172302</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevLett.132.172302" target="_blank" >10.1103/PhysRevLett.132.172302</a>

Result language

angličtina

Original language name

Emergence of Long-Range Angular Correlations in Low-Multiplicity Proton-Proton Collisions

Original language description

This Letter presents the measurement of near-side associated per-trigger yields, denoted ridge yields, from the analysis of angular correlations of charged hadrons in proton- proton collisions at root s=13 TeV. Long-range ridge yields are extracted for pairs of charged particles with a pseudorapidity difference of 1.4 < Delta eta < 1.8 and a transverse momentum of 1 < pr < 2 GeV/c, as a function of the charged-particle multiplicity measured at midrapidity. This Letter extends the measurements of the ridge yield to the low multiplicity region, where in hadronic collisions it is typically conjectured that a strongly interacting medium is unlikely to be formed. The precision of the new low multiplicity results allows for the first direct quantitative comparison with the results obtained in ethorne- collisions at root s=91 GeV and root s 183-209 GeV, where initial-state effects such as preequilibrium dynamics and collision geometry are not expected to play a role. In the multiplicity range 8.<= N(eh <=)24 where the ethorne- results have good precision, the measured ridge yields in pp collisions are substantially larger than the limits set in ethorneannihilations. Consequently, the findings presented in this Letter suggest that the processes involved in ethorne- annihilations do not contribute significantly to the emergence of long-range correlations in pp collisions.

Czech name

—

Czech description

—

Type

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

CEP classification

—

OECD FORD branch

10303 - Particles and field physics

Project

<a href="/en/project/LM2023040" target="_blank" >LM2023040: Research infrastructure for experiments at CERN</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

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

Name of the periodical

Physical Review Letters

ISSN

0031-9007

e-ISSN

1079-7114

Volume of the periodical

132

Issue of the periodical within the volume

17

Country of publishing house

US - UNITED STATES

Number of pages

13

Pages from-to

172302

UT code for WoS article

001271507300001

EID of the result in the Scopus database

2-s2.0-85191967800