Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Kaon-proton strong interaction at low relative momentum via femtoscopy
  in Pb-Pb collisions at the LHC   In 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\rightarrow
{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 ${K}^{-} p\ ({K}^{+}\overline{p})$ and ${K}^{+}p
({K}^{-}\overline{p})$ pairs in Pb-Pb collisions at centre-of-mass energy per
nucleon pair of $\sqrt{s_{\rm NN}} = 5.02$ TeV registered by the ALICE
experiment is reported. The components of the ${K}^{-} p$ complex scattering
length are extracted and found to be $\Re
f_0=-0.91\pm~{0.03}$(stat)$^{+0.17}_{-0.03}$(syst) and $\Im f_0 =
0.92\pm~{0.05}$(stat)$^{+0.12}_{-0.33}$(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.

30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th
2
The categories of this paper are: math
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol