Kaon-proton strong interaction at low relative momentum via femtoscopy in Pb-Pb collisions at the LHC
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00547657" target="_blank" >RIV/68378271:_____/21:00547657 - isvavai.cz</a>
Alternative codes found
RIV/61389005:_____/21:00547657 RIV/68407700:21340/21:00353006
Result on the web
<a href="https://doi.org/10.1016/j.physletb.2021.136708" target="_blank" >https://doi.org/10.1016/j.physletb.2021.136708</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.physletb.2021.136708" target="_blank" >10.1016/j.physletb.2021.136708</a>
Alternative languages
Result language
angličtina
Original language name
Kaon-proton strong interaction at low relative momentum via femtoscopy in Pb-Pb collisions at the LHC
Original language description
n quantum scattering processes between two particles, aspects characterizing the strong and Coulomb forces can be observed in kinematic distributions of the particle pairs. The sensitivity to the interaction potential reaches a maximum at low relative momentum and vanishing distance between the two particles. Ultrarelativistic heavy-ion collisions at the LHC provide an abundant source of many hadron species and can be employed as a measurement method of scattering parameters that is complementary to scattering experiments. This study confirms that momentum correlations of particles produced in Pb-Pb collisions at the LHC provide an accurate measurement of kaon-proton scattering parameters at low relative momentum, allowing precise access to the K- p -> K- p process. This work also validates the femtoscopic measurement in ultrarelativistic heavy-ion collisions as an alternative to scattering experiments and a complementary tool to the study of exotic atoms with comparable precision. In this work, the first femtoscopic measurement of momentum correlations of K- p (K+(p) over bar) and K+p (K-(p) over bar) pairs in Pb-Pb collisions at centre-of-mass energy per nucleon pair of root sNN = 5.02 TeV registered by the ALICE experiment is reported. The components of the K- p complex scattering length are extracted and found to be Rf(0) = -0.91 +/- 0.03(stat)(-0.03)(+0.17) (syst) and Sf(0) = 0.92 +/- 0.05(stat)(-0.33)(+0.12)(syst). The results are compared with chiral effective field theory predictions as well as with existing data from dedicated scattering and exotic kaonic atom experiments.
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
10303 - Particles and field physics
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physics Letters. B
ISSN
0370-2693
e-ISSN
1873-2445
Volume of the periodical
822
Issue of the periodical within the volume
NOV 10
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
14
Pages from-to
136708
UT code for WoS article
000710431500002
EID of the result in the Scopus database
2-s2.0-85116936495