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Study of the Λ–Λ interaction with femtoscopy correlations in pp and p–Pb collisions at the LHC. / ALICE Collaboration.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 797, 134822, 10.10.2019.

Research output: Contribution to journal › Article › peer-review

Harvard

ALICE Collaboration 2019, 'Study of the Λ–Λ interaction with femtoscopy correlations in pp and p–Pb collisions at the LHC', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 797, 134822. https://doi.org/10.1016/j.physletb.2019.134822

APA

ALICE Collaboration (2019). Study of the Λ–Λ interaction with femtoscopy correlations in pp and p–Pb collisions at the LHC. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 797, [134822]. https://doi.org/10.1016/j.physletb.2019.134822

Vancouver

ALICE Collaboration. Study of the Λ–Λ interaction with femtoscopy correlations in pp and p–Pb collisions at the LHC. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2019 Oct 10;797. 134822. https://doi.org/10.1016/j.physletb.2019.134822

Author

ALICE Collaboration. / Study of the Λ–Λ interaction with femtoscopy correlations in pp and p–Pb collisions at the LHC. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2019 ; Vol. 797.

BibTeX

@article{3d513f12e3ef4597a5eb1e62b18a45b3,
title = "Study of the Λ–Λ interaction with femtoscopy correlations in pp and p–Pb collisions at the LHC",
abstract = "This work presents new constraints on the existence and the binding energy of a possible Λ–Λ bound state, the H-dibaryon, derived from Λ–Λ femtoscopic measurements by the ALICE collaboration. The results are obtained from a new measurement using the femtoscopy technique in (Figure presented.) collisions at s=13 TeV and p–Pb collisions at sNN=5.02 TeV, combined with previously published results from (Figure presented.) collisions at s=7 TeV. The Λ–Λ scattering parameter space, spanned by the inverse scattering length f0 −1 and the effective range d0, is constrained by comparing the measured Λ–Λ correlation function with calculations obtained within the Lednick{\'y} model. The data are compatible with hypernuclei results and lattice computations, both predicting a shallow attractive interaction, and permit to test different theoretical approaches describing the Λ–Λ interaction. The region in the (f0 −1,d0) plane which would accommodate a Λ–Λ bound state is substantially restricted compared to previous studies. The binding energy of the possible Λ–Λ bound state is estimated within an effective-range expansion approach and is found to be BΛΛ=3.2−2.4 +1.6(stat)−1.0 +1.8(syst) MeV.",
keywords = "EXCHANGE-POTENTIAL APPROACH, BARYON-BARYON SCATTERING, HEAVY-ION COLLISIONS, NUCLEON-NUCLEON, HYPERON",
author = "{ALICE Collaboration} and S. Acharya and D. Adamov{\'a} and Adhya, {S. P.} and A. Adler and J. Adolfsson and Aggarwal, {M. M.} and {Aglieri Rinella}, G. and M. Agnello and N. Agrawal and Z. Ahammed and S. Ahmad and Ahn, {S. U.} and S. Aiola and A. Akindinov and M. Al-Turany and Alam, {S. N.} and Albuquerque, {D. S.D.} and D. Aleksandrov and B. Alessandro and Alfanda, {H. M.} and {Alfaro Molina}, R. and B. Ali and Y. Ali and A. Alici and A. Alkin and J. Alme and T. Alt and L. Altenkamper and I. Altsybeev and Anaam, {M. N.} and C. Andrei and D. Andreou and Andrews, {H. A.} and A. Andronic and M. Angeletti and V. Anguelov and C. Anson and T. Anti{\v c}i{\'c} and F. Antinori and P. Antonioli and R. Anwar and N. Apadula and L. Aphecetche and A. Erokhin and G. Feofilov and V. Kovalenko and T. Lazareva and V. Vechernin and A. Zarochentsev and V. Zherebchevskii",
year = "2019",
month = oct,
day = "10",
doi = "10.1016/j.physletb.2019.134822",
language = "English",
volume = "797",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Study of the Λ–Λ interaction with femtoscopy correlations in pp and p–Pb collisions at the LHC

AU - ALICE Collaboration

AU - Acharya, S.

AU - Adamová, D.

AU - Adhya, S. P.

AU - Adler, A.

AU - Adolfsson, J.

AU - Aggarwal, M. M.

AU - Aglieri Rinella, G.

AU - Agnello, M.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahmad, S.

AU - Ahn, S. U.

AU - Aiola, S.

AU - Akindinov, A.

AU - Al-Turany, M.

AU - Alam, S. N.

AU - Albuquerque, D. S.D.

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Alfanda, H. M.

AU - Alfaro Molina, R.

AU - Ali, B.

AU - Ali, Y.

AU - Alici, A.

AU - Alkin, A.

AU - Alme, J.

AU - Alt, T.

AU - Altenkamper, L.

AU - Altsybeev, I.

AU - Anaam, M. N.

AU - Andrei, C.

AU - Andreou, D.

AU - Andrews, H. A.

AU - Andronic, A.

AU - Angeletti, M.

AU - Anguelov, V.

AU - Anson, C.

AU - Antičić, T.

AU - Antinori, F.

AU - Antonioli, P.

AU - Anwar, R.

AU - Apadula, N.

AU - Aphecetche, L.

AU - Erokhin, A.

AU - Feofilov, G.

AU - Kovalenko, V.

AU - Lazareva, T.

AU - Vechernin, V.

AU - Zarochentsev, A.

AU - Zherebchevskii, V.

PY - 2019/10/10

Y1 - 2019/10/10

N2 - This work presents new constraints on the existence and the binding energy of a possible Λ–Λ bound state, the H-dibaryon, derived from Λ–Λ femtoscopic measurements by the ALICE collaboration. The results are obtained from a new measurement using the femtoscopy technique in (Figure presented.) collisions at s=13 TeV and p–Pb collisions at sNN=5.02 TeV, combined with previously published results from (Figure presented.) collisions at s=7 TeV. The Λ–Λ scattering parameter space, spanned by the inverse scattering length f0 −1 and the effective range d0, is constrained by comparing the measured Λ–Λ correlation function with calculations obtained within the Lednický model. The data are compatible with hypernuclei results and lattice computations, both predicting a shallow attractive interaction, and permit to test different theoretical approaches describing the Λ–Λ interaction. The region in the (f0 −1,d0) plane which would accommodate a Λ–Λ bound state is substantially restricted compared to previous studies. The binding energy of the possible Λ–Λ bound state is estimated within an effective-range expansion approach and is found to be BΛΛ=3.2−2.4 +1.6(stat)−1.0 +1.8(syst) MeV.

AB - This work presents new constraints on the existence and the binding energy of a possible Λ–Λ bound state, the H-dibaryon, derived from Λ–Λ femtoscopic measurements by the ALICE collaboration. The results are obtained from a new measurement using the femtoscopy technique in (Figure presented.) collisions at s=13 TeV and p–Pb collisions at sNN=5.02 TeV, combined with previously published results from (Figure presented.) collisions at s=7 TeV. The Λ–Λ scattering parameter space, spanned by the inverse scattering length f0 −1 and the effective range d0, is constrained by comparing the measured Λ–Λ correlation function with calculations obtained within the Lednický model. The data are compatible with hypernuclei results and lattice computations, both predicting a shallow attractive interaction, and permit to test different theoretical approaches describing the Λ–Λ interaction. The region in the (f0 −1,d0) plane which would accommodate a Λ–Λ bound state is substantially restricted compared to previous studies. The binding energy of the possible Λ–Λ bound state is estimated within an effective-range expansion approach and is found to be BΛΛ=3.2−2.4 +1.6(stat)−1.0 +1.8(syst) MeV.

KW - EXCHANGE-POTENTIAL APPROACH

KW - BARYON-BARYON SCATTERING

KW - HEAVY-ION COLLISIONS

KW - NUCLEON-NUCLEON

KW - HYPERON

UR - http://www.scopus.com/inward/record.url?scp=85070895177&partnerID=8YFLogxK

UR - http://www.mendeley.com/research/study-%CE%BB%CE%BB-interaction-femtoscopy-correlations-p-p-ppb-collisions-lhc

UR - https://www.sciencedirect.com/science/article/pii/S0370269319305362

U2 - 10.1016/j.physletb.2019.134822

DO - 10.1016/j.physletb.2019.134822

M3 - Article

AN - SCOPUS:85070895177

VL - 797

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

M1 - 134822

ER -

ID: 45516835