Observation of New Baryons in the Ξ−𝑏⁢𝜋+⁢𝜋− and Ξ0𝑏⁢𝜋+⁢𝜋− Systems

LHCb collaboration; R.H. O'Neil; M. Richardson-Slipper; C. Vrahas

doi:10.1103/PhysRevLett.131.171901

Observation of New Baryons in the Ξ−𝑏⁢𝜋+⁢𝜋− and Ξ0𝑏⁢𝜋+⁢𝜋− Systems

LHCb collaboration, R.H. O'Neil, M. Richardson-Slipper, C. Vrahas

School of Physics and Astronomy

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

Abstract

The first observation and study of two new baryonic structures in the final state Ξ0𝑏⁢𝜋+⁢𝜋− and the confirmation of the Ξ𝑏⁢(6100)− state in the Ξ−𝑏⁢𝜋+⁢𝜋− decay mode are reported using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb−1. In addition, the properties of the known Ξ*0𝑏, Ξ′−𝑏 and Ξ*−𝑏 resonances are measured with improved precision. The new decay mode of the Ξ0𝑏 baryon to the Ξ+𝑐 𝜋− 𝜋+ 𝜋− final state is observed and exploited for the first time in these measurements.

Original language	English
Article number	171901
Pages (from-to)	1-11
Number of pages	11
Journal	Physical Review Letters
Volume	131
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.131.171901
Publication status	Published - 23 Oct 2023

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http://arxiv.org/abs/2307.13399

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Beautiful Flavours: Discovering New Physics with B-hadrons and Tau-leptons
Barter, W. (Principal Investigator)
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Experimental Particle Physics at the University of Edinburgh
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Next generation photodetectors for future applications
Oliva, F. (Principal Investigator)
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@article{0e5ba2f26259444ea87365c9c759c230,

title = "Observation of New Baryons in the Ξ−𝑏⁢𝜋+⁢𝜋− and Ξ0𝑏⁢𝜋+⁢𝜋− Systems",

abstract = "The first observation and study of two new baryonic structures in the final state Ξ0𝑏⁢𝜋+⁢𝜋− and the confirmation of the Ξ𝑏⁢(6100)− state in the Ξ−𝑏⁢𝜋+⁢𝜋− decay mode are reported using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb−1. In addition, the properties of the known Ξ*0𝑏, Ξ′−𝑏 and Ξ*−𝑏 resonances are measured with improved precision. The new decay mode of the Ξ0𝑏 baryon to the Ξ+𝑐 𝜋− 𝜋+ 𝜋− final state is observed and exploited for the first time in these measurements.",

author = "\{LHCb collaboration\} and William Barter and P.E.L. Clarke and S. Gambetta and F. Muheim and M. Needham and Mark Williams and Federico Betti and Robert Currie and S. Eisenhardt and Lavra, \{Lais Soares\} and Oliva Federica and Ozlem Ozcelik and Gediminas Sarpis and R.H. O'Neil and M. Richardson-Slipper and C. Vrahas",

year = "2023",

month = oct,

day = "23",

doi = "10.1103/PhysRevLett.131.171901",

language = "English",

volume = "131",

pages = "1--11",

journal = "Physical Review Letters",

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publisher = "American Physical Society",

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T1 - Observation of New Baryons in the Ξ−𝑏⁢𝜋+⁢𝜋− and Ξ0𝑏⁢𝜋+⁢𝜋− Systems

AU - LHCb collaboration

AU - Barter, William

AU - Clarke, P.E.L.

AU - Gambetta, S.

AU - Muheim, F.

AU - Needham, M.

AU - Williams, Mark

AU - Betti, Federico

AU - Currie, Robert

AU - Eisenhardt, S.

AU - Lavra, Lais Soares

AU - Federica, Oliva

AU - Ozcelik, Ozlem

AU - Sarpis, Gediminas

AU - O'Neil, R.H.

AU - Richardson-Slipper, M.

AU - Vrahas, C.

PY - 2023/10/23

Y1 - 2023/10/23

N2 - The first observation and study of two new baryonic structures in the final state Ξ0𝑏⁢𝜋+⁢𝜋− and the confirmation of the Ξ𝑏⁢(6100)− state in the Ξ−𝑏⁢𝜋+⁢𝜋− decay mode are reported using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb−1. In addition, the properties of the known Ξ*0𝑏, Ξ′−𝑏 and Ξ*−𝑏 resonances are measured with improved precision. The new decay mode of the Ξ0𝑏 baryon to the Ξ+𝑐 𝜋− 𝜋+ 𝜋− final state is observed and exploited for the first time in these measurements.

AB - The first observation and study of two new baryonic structures in the final state Ξ0𝑏⁢𝜋+⁢𝜋− and the confirmation of the Ξ𝑏⁢(6100)− state in the Ξ−𝑏⁢𝜋+⁢𝜋− decay mode are reported using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb−1. In addition, the properties of the known Ξ*0𝑏, Ξ′−𝑏 and Ξ*−𝑏 resonances are measured with improved precision. The new decay mode of the Ξ0𝑏 baryon to the Ξ+𝑐 𝜋− 𝜋+ 𝜋− final state is observed and exploited for the first time in these measurements.

U2 - 10.1103/PhysRevLett.131.171901

DO - 10.1103/PhysRevLett.131.171901

M3 - Article

SN - 0031-9007

VL - 131

SP - 1

EP - 11

JO - Physical Review Letters

JF - Physical Review Letters

IS - 17

M1 - 171901

ER -

Observation of New Baryons in the Ξ−𝑏⁢𝜋+⁢𝜋− and Ξ0𝑏⁢𝜋+⁢𝜋− Systems

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Beautiful Flavours: Discovering New Physics with B-hadrons and Tau-leptons

Experimental Particle Physics at the University of Edinburgh

Next generation photodetectors for future applications

Cite this