HΛ3 and H‾Λ‾3 lifetime measurement in Pb–Pb collisions at sNN=5.02 TeV via two-body decay

S Acharya; Jonatan Adolfsson; Peter Christiansen; Oliver Matonoha; Adrian Nassirpour; Anders Oskarsson; Tuva Richert; Omar Vazquez Rueda; David Silvermyr; Evert Stenlund; N Zurlo; ALICE Collaboration

doi:10.1016/j.physletb.2019.134905

HΛ3 and H‾Λ‾3 lifetime measurement in Pb–Pb collisions at sNN=5.02 TeV via two-body decay

S Acharya, Jonatan Adolfsson, Peter Christiansen, Oliver Matonoha, Adrian Nassirpour, Anders Oskarsson, Tuva Richert, Omar Vazquez Rueda, David Silvermyr, Evert Stenlund, N Zurlo, ALICE Collaboration

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Abstract

An improved value for the lifetime of the (anti-)hypertriton has been obtained using the data sample of Pb–Pb collisions at sNN=5.02 TeV collected by the ALICE experiment at the LHC. The (anti-)hypertriton has been reconstructed via its charged two-body mesonic decay channel and the lifetime has been determined from an exponential fit to the dN/d(ct) spectrum. The measured value, τ=242−38 +34 (stat.) ± 17 (syst.) ps, is compatible with representative theoretical predictions, thus contributing to the solution of the longstanding hypertriton lifetime puzzle. © 2019 The Author

Original language	English
Article number	134905
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	797
DOIs	https://doi.org/10.1016/j.physletb.2019.134905
Publication status	Published - 2019

Subject classification (UKÄ)

Subatomic Physics

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10.1016/j.physletb.2019.134905

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Acharya, S., Adolfsson, J., Christiansen, P., Matonoha, O., Nassirpour, A., Oskarsson, A., Richert, T., Vazquez Rueda, O., Silvermyr, D., Stenlund, E., Zurlo, N., & ALICE Collaboration (2019). HΛ3 and H‾Λ‾3 lifetime measurement in Pb–Pb collisions at sNN=5.02 TeV via two-body decay. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 797, Article 134905. https://doi.org/10.1016/j.physletb.2019.134905

@article{3e8eb5fe8f244e69b0d196b94648c07f,

title = "HΛ3 and H‾Λ‾3 lifetime measurement in Pb–Pb collisions at sNN=5.02 TeV via two-body decay",

abstract = "An improved value for the lifetime of the (anti-)hypertriton has been obtained using the data sample of Pb–Pb collisions at sNN=5.02 TeV collected by the ALICE experiment at the LHC. The (anti-)hypertriton has been reconstructed via its charged two-body mesonic decay channel and the lifetime has been determined from an exponential fit to the dN/d(ct) spectrum. The measured value, τ=242−38 +34 (stat.) ± 17 (syst.) ps, is compatible with representative theoretical predictions, thus contributing to the solution of the longstanding hypertriton lifetime puzzle. {\textcopyright} 2019 The Author",

author = "S Acharya and Jonatan Adolfsson and Peter Christiansen and Oliver Matonoha and Adrian Nassirpour and Anders Oskarsson and Tuva Richert and {Vazquez Rueda}, Omar and David Silvermyr and Evert Stenlund and N Zurlo and {ALICE Collaboration}",

year = "2019",

doi = "10.1016/j.physletb.2019.134905",

language = "English",

volume = "797",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

}

Acharya, S, Adolfsson, J, Christiansen, P , Matonoha, O , Nassirpour, A , Oskarsson, A, Richert, T, Vazquez Rueda, O, Silvermyr, D , Stenlund, E, Zurlo, N & ALICE Collaboration 2019, 'HΛ3 and H‾Λ‾3 lifetime measurement in Pb–Pb collisions at sNN=5.02 TeV via two-body decay', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 797, 134905. https://doi.org/10.1016/j.physletb.2019.134905

TY - JOUR

T1 - HΛ3 and H‾Λ‾3 lifetime measurement in Pb–Pb collisions at sNN=5.02 TeV via two-body decay

AU - Acharya, S

AU - Adolfsson, Jonatan

AU - Christiansen, Peter

AU - Matonoha, Oliver

AU - Nassirpour, Adrian

AU - Oskarsson, Anders

AU - Richert, Tuva

AU - Vazquez Rueda, Omar

AU - Silvermyr, David

AU - Stenlund, Evert

AU - Zurlo, N

AU - ALICE Collaboration

PY - 2019

Y1 - 2019

N2 - An improved value for the lifetime of the (anti-)hypertriton has been obtained using the data sample of Pb–Pb collisions at sNN=5.02 TeV collected by the ALICE experiment at the LHC. The (anti-)hypertriton has been reconstructed via its charged two-body mesonic decay channel and the lifetime has been determined from an exponential fit to the dN/d(ct) spectrum. The measured value, τ=242−38 +34 (stat.) ± 17 (syst.) ps, is compatible with representative theoretical predictions, thus contributing to the solution of the longstanding hypertriton lifetime puzzle. © 2019 The Author

AB - An improved value for the lifetime of the (anti-)hypertriton has been obtained using the data sample of Pb–Pb collisions at sNN=5.02 TeV collected by the ALICE experiment at the LHC. The (anti-)hypertriton has been reconstructed via its charged two-body mesonic decay channel and the lifetime has been determined from an exponential fit to the dN/d(ct) spectrum. The measured value, τ=242−38 +34 (stat.) ± 17 (syst.) ps, is compatible with representative theoretical predictions, thus contributing to the solution of the longstanding hypertriton lifetime puzzle. © 2019 The Author

U2 - 10.1016/j.physletb.2019.134905

DO - 10.1016/j.physletb.2019.134905

M3 - Article

SN - 0370-2693

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

M1 - 134905

ER -

HΛ3 and H‾Λ‾3 lifetime measurement in Pb–Pb collisions at sNN=5.02 TeV via two-body decay

Abstract

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