First measurement of the Λ–Ξ interaction in proton–proton collisions at the LHC
Acharya, S. ; Basu, S. LU
; Christiansen, P.
LU
; Matonoha, O.
LU
; Nassirpour, A.F.
LU
; Ohlson, A.
LU
; Oskarsson, A.
LU
; Richert, T.
LU
; Rueda, O.V.
and Silvermyr, D.
LU
, et al.
(2023)
In Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
844.
- Abstract
- The first experimental information on the strong interaction between Λ and Ξ− strange baryons is presented in this Letter. The correlation function of Λ–Ξ− and Λ‾–Ξ‾+ pairs produced in high-multiplicity proton–proton (pp) collisions at s=13 TeV at the LHC is measured as a function of the relative momentum of the pair. The femtoscopy method is used to calculate the correlation function, which is then compared with theoretical expectations obtained using a meson exchange model, chiral effective field theory, and Lattice QCD calculations close to the physical point. Data support predictions of small scattering parameters while discarding versions with large ones, thus suggesting a weak Λ–Ξ− interaction. The limited statistical significance of... (More)
- The first experimental information on the strong interaction between Λ and Ξ− strange baryons is presented in this Letter. The correlation function of Λ–Ξ− and Λ‾–Ξ‾+ pairs produced in high-multiplicity proton–proton (pp) collisions at s=13 TeV at the LHC is measured as a function of the relative momentum of the pair. The femtoscopy method is used to calculate the correlation function, which is then compared with theoretical expectations obtained using a meson exchange model, chiral effective field theory, and Lattice QCD calculations close to the physical point. Data support predictions of small scattering parameters while discarding versions with large ones, thus suggesting a weak Λ–Ξ− interaction. The limited statistical significance of the data does not yet allow one to constrain the effects of coupled channels like Σ–Ξ and N–Ω. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/fa74f983-085b-426e-8129-cdf3673ca5b5
- author
- Acharya, S.
; Basu, S.
LU
; Christiansen, P.
LU
; Matonoha, O.
LU
; Nassirpour, A.F.
LU
; Ohlson, A.
LU
; Oskarsson, A.
LU
; Richert, T.
LU
; Rueda, O.V.
and Silvermyr, D.
LU
, et al. (More)
- Acharya, S.
; Basu, S.
LU
; Christiansen, P.
LU
; Matonoha, O.
LU
; Nassirpour, A.F.
LU
; Ohlson, A.
LU
; Oskarsson, A.
LU
; Richert, T.
LU
; Rueda, O.V.
; Silvermyr, D.
LU
; Staa, J.
LU
; Zinovjev, G.
and Zurlo, N.
(Less)
- author collaboration
- organization
- publishing date
- 2023
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
- volume
- 844
- article number
- 137223
- publisher
- Elsevier
- external identifiers
-
- scopus:85162181771
- ISSN
- 0370-2693
- DOI
- 10.1016/j.physletb.2022.137223
- language
- English
- LU publication?
- yes
- id
- fa74f983-085b-426e-8129-cdf3673ca5b5
- date added to LUP
- 2024-01-16 14:37:29
- date last changed
- 2024-01-16 14:39:51
@article{fa74f983-085b-426e-8129-cdf3673ca5b5,
abstract = {{The first experimental information on the strong interaction between Λ and Ξ− strange baryons is presented in this Letter. The correlation function of Λ–Ξ− and Λ‾–Ξ‾+ pairs produced in high-multiplicity proton–proton (pp) collisions at s=13 TeV at the LHC is measured as a function of the relative momentum of the pair. The femtoscopy method is used to calculate the correlation function, which is then compared with theoretical expectations obtained using a meson exchange model, chiral effective field theory, and Lattice QCD calculations close to the physical point. Data support predictions of small scattering parameters while discarding versions with large ones, thus suggesting a weak Λ–Ξ− interaction. The limited statistical significance of the data does not yet allow one to constrain the effects of coupled channels like Σ–Ξ and N–Ω.}},
author = {{Acharya, S. and Basu, S. and Christiansen, P. and Matonoha, O. and Nassirpour, A.F. and Ohlson, A. and Oskarsson, A. and Richert, T. and Rueda, O.V. and Silvermyr, D. and Staa, J. and Zinovjev, G. and Zurlo, N.}},
issn = {{0370-2693}},
language = {{eng}},
publisher = {{Elsevier}},
series = {{Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics}},
title = {{First measurement of the Λ–Ξ interaction in proton–proton collisions at the LHC}},
url = {{http://dx.doi.org/10.1016/j.physletb.2022.137223}},
doi = {{10.1016/j.physletb.2022.137223}},
volume = {{844}},
year = {{2023}},
}