Observation of sizeable 𝜔 contribution to 𝜒𝑐⁢1⁡(3872)→𝜋+⁢𝜋−⁢𝐽/𝜓 decays

LHCb collaboration; R.H. O'Neil

doi:10.1103/PhysRevD.108.L011103

Observation of sizeable 𝜔 contribution to 𝜒𝑐⁢1⁡(3872)→𝜋+⁢𝜋−⁢𝐽/𝜓 decays

LHCb collaboration, R.H. O'Neil

School of Physics and Astronomy

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

Abstract / Description of output

Resonant structures in the dipion mass spectrum from & chi;c1(3872) & RARR; & pi;+& pi;-J=& psi; decays, produced via B+ & RARR; K+& chi;c1(3872) decays, are analyzed using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb-1. A sizeable contribution from the isospin conserving & chi;c1(3872) & RARR; & omega;J=& psi; decay is established for the first time, (21.4 & PLUSMN; 2.3 & PLUSMN; 2.0)%, with a significance of more than 7.1 & sigma;. The amplitude of isospin violating decay, & chi;c1(3872) & RARR; & rho;0J=& psi;, relative to isospin conserving decay, & chi;c1(3872) & RARR; & omega;J=& psi;, is properly determined, and it is a factor of 6 larger than expected for a pure charmonium state.

Original language	English
Article number	L011103
Pages (from-to)	1-12
Number of pages	12
Journal	Physical Review D
Volume	108
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevD.108.L011103
Publication status	Published - 27 Jul 2023

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http://arxiv.org/abs/2204.12597

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Experimental Particle Physics at the University of Edinburgh
Leonidopoulos, C.
1/04/23 → 30/09/25
Project: Research
Next generation photodetectors for future applications
Oliva, F.
1/12/22 → 30/11/25
Project: Research
Experimental Particle Physics at the University of Edinburgh
Leonidopoulos, C.
1/10/22 → 30/09/25
Project: Research

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@article{9883e9ea314c400791f0c261e8cd410e,

title = "Observation of sizeable 𝜔 contribution to 𝜒𝑐⁢1⁡(3872)→𝜋+⁢𝜋−⁢𝐽/𝜓 decays",

abstract = "Resonant structures in the dipion mass spectrum from & chi;c1(3872) & RARR; & pi;+& pi;-J=& psi; decays, produced via B+ & RARR; K+& chi;c1(3872) decays, are analyzed using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb-1. A sizeable contribution from the isospin conserving & chi;c1(3872) & RARR; & omega;J=& psi; decay is established for the first time, (21.4 & PLUSMN; 2.3 & PLUSMN; 2.0)%, with a significance of more than 7.1 & sigma;. The amplitude of isospin violating decay, & chi;c1(3872) & RARR; & rho;0J=& psi;, relative to isospin conserving decay, & chi;c1(3872) & RARR; & omega;J=& psi;, is properly determined, and it is a factor of 6 larger than expected for a pure charmonium state.",

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",

year = "2023",

month = jul,

day = "27",

doi = "10.1103/PhysRevD.108.L011103",

language = "English",

volume = "108",

pages = "1--12",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "1",

}

TY - JOUR

T1 - Observation of sizeable 𝜔 contribution to 𝜒𝑐⁢1⁡(3872)→𝜋+⁢𝜋−⁢𝐽/𝜓 decays

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.

PY - 2023/7/27

Y1 - 2023/7/27

N2 - Resonant structures in the dipion mass spectrum from & chi;c1(3872) & RARR; & pi;+& pi;-J=& psi; decays, produced via B+ & RARR; K+& chi;c1(3872) decays, are analyzed using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb-1. A sizeable contribution from the isospin conserving & chi;c1(3872) & RARR; & omega;J=& psi; decay is established for the first time, (21.4 & PLUSMN; 2.3 & PLUSMN; 2.0)%, with a significance of more than 7.1 & sigma;. The amplitude of isospin violating decay, & chi;c1(3872) & RARR; & rho;0J=& psi;, relative to isospin conserving decay, & chi;c1(3872) & RARR; & omega;J=& psi;, is properly determined, and it is a factor of 6 larger than expected for a pure charmonium state.

AB - Resonant structures in the dipion mass spectrum from & chi;c1(3872) & RARR; & pi;+& pi;-J=& psi; decays, produced via B+ & RARR; K+& chi;c1(3872) decays, are analyzed using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb-1. A sizeable contribution from the isospin conserving & chi;c1(3872) & RARR; & omega;J=& psi; decay is established for the first time, (21.4 & PLUSMN; 2.3 & PLUSMN; 2.0)%, with a significance of more than 7.1 & sigma;. The amplitude of isospin violating decay, & chi;c1(3872) & RARR; & rho;0J=& psi;, relative to isospin conserving decay, & chi;c1(3872) & RARR; & omega;J=& psi;, is properly determined, and it is a factor of 6 larger than expected for a pure charmonium state.

U2 - 10.1103/PhysRevD.108.L011103

DO - 10.1103/PhysRevD.108.L011103

M3 - Article

SN - 2470-0010

VL - 108

SP - 1

EP - 12

JO - Physical Review D

JF - Physical Review D

IS - 1

M1 - L011103

ER -

Observation of sizeable 𝜔 contribution to 𝜒𝑐⁢1⁡(3872)→𝜋+⁢𝜋−⁢𝐽/𝜓 decays

Abstract / Description of output

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Projects

Experimental Particle Physics at the University of Edinburgh

Next generation photodetectors for future applications

Experimental Particle Physics at the University of Edinburgh

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