Common femtoscopic hadron-emission source in pp collisions at the LHC
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F25%3A00635504" target="_blank" >RIV/61389005:_____/25:00635504 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/25:00635504 RIV/68407700:21340/25:00388613
Result on the web
<a href="https://link.springer.com/article/10.1140/epjc/s10052-025-13793-y" target="_blank" >https://link.springer.com/article/10.1140/epjc/s10052-025-13793-y</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1140/epjc/s10052-025-13793-y" target="_blank" >10.1140/epjc/s10052-025-13793-y</a>
Alternative languages
Result language
angličtina
Original language name
Common femtoscopic hadron-emission source in pp collisions at the LHC
Original language description
The femtoscopic study of pairs of identical pions is particularly suited to investigate the effective source function of particle emission, due to the resulting Bose-Einstein correlation signal. In small collision systems at the LHC, pp in particular, the majority of the pions are produced in resonance decays, which significantly affect the profile and size of the source. In this work, we explicitly model this effect in order to extract the primordial source in pp collisions at root s = 13 TeV from charged pi-pi correlations measured by ALICE. We demonstrate that the assumption of a Gaussian primordial source is compatible with the data and that the effective source, resulting from modifications due to resonances, is approximately exponential, as found in previous measurements at the LHC. The universality of hadron emission in pp collisions is further investigated by applying the same methodology to characterize the primordial source of K-p pairs. The size of the primordial source is evaluated as a function of the transverse mass (m(T)) of the pairs, leading to the observation of a common scaling for both pi-pi and K-p, suggesting a collective effect. Further, the present results are compatible with the mT scaling of the p-p and p-Lambda primordial source measured by ALICE in high multiplicity pp collisions, providing additional evidence for the presence of a common emission source for all hadrons in small collision systems at the LHC. This will allow the determination of the source function for any hadron-hadron pairs with high precision, granting access to the properties of the possible final-state interaction among pairs of less abundantly produced hadrons, such as strange or charmed particles.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10304 - Nuclear physics
Result continuities
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
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
European Physical Journal C
ISSN
1434-6044
e-ISSN
1434-6052
Volume of the periodical
85
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
23
Pages from-to
198
UT code for WoS article
001458727400001
EID of the result in the Scopus database
2-s2.0-105012444528