Evidence for a New Structure in the J/ψp and J/ψ(p)over-bar Systems in Bs0 → J/ψp(p)over-bar Decays

LHCb collaboration; R.H. O'Neil

doi:10.1103/PhysRevLett.128.062001

Evidence for a New Structure in the J/ψp and J/ψ(p)over-bar Systems in Bs0 → J/ψp(p)over-bar Decays

LHCb collaboration, R.H. O'Neil

School of Physics and Astronomy

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

Abstract / Description of output

An amplitude analysis of flavor-untagged B-s(0) -> J=psi p (p) over bar decays is performed using a sample of 797 +/- 31 decays reconstructed with the LHCb detector. The data, collected in proton-proton collisions between 2011 and 2018, correspond to an integrated luminosity of 9 fb(-1). Evidence for a new structure in the J=psi p and J=psi(p) over bar systems with a mass of 4337(-4-2)(+7+2) MeV and a width of 29(-12-14)(+26+14) MeV is found, where the first uncertainty is statistical and the second systematic, with a significance in the range of 3.1 to 3.7 sigma, depending on the assigned J(P) hypothesis.

Original language	English
Article number	062001
Pages (from-to)	1-11
Number of pages	11
Journal	Physical Review Letters
Volume	128
Issue number	6
Early online date	7 Jan 2022
DOIs	https://doi.org/10.1103/PhysRevLett.128.062001
Publication status	Published - 11 Feb 2022

Access to Document

10.1103/PhysRevLett.128.062001Licence: Creative Commons: Attribution (CC-BY)

http://arxiv.org/abs/2108.04720

2 Finished
5 Active

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

Cite this

@article{373780a1141a4a8085d1c9d95083408d,

title = "Evidence for a New Structure in the J/ψp and J/ψ(p)over-bar Systems in Bs0 → J/ψp(p)over-bar Decays",

abstract = "An amplitude analysis of flavor-untagged B-s(0) -> J=psi p (p) over bar decays is performed using a sample of 797 +/- 31 decays reconstructed with the LHCb detector. The data, collected in proton-proton collisions between 2011 and 2018, correspond to an integrated luminosity of 9 fb(-1). Evidence for a new structure in the J=psi p and J=psi(p) over bar systems with a mass of 4337(-4-2)(+7+2) MeV and a width of 29(-12-14)(+26+14) MeV is found, where the first uncertainty is statistical and the second systematic, with a significance in the range of 3.1 to 3.7 sigma, depending on the assigned J(P) hypothesis.",

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 Gediminas Sarpis and R.H. O'Neil",

year = "2022",

month = feb,

day = "11",

doi = "10.1103/PhysRevLett.128.062001",

language = "English",

volume = "128",

pages = "1--11",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "6",

}

TY - JOUR

T1 - Evidence for a New Structure in the J/ψp and J/ψ(p)over-bar Systems in Bs0 → J/ψp(p)over-bar 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 - Sarpis, Gediminas

AU - O'Neil, R.H.

PY - 2022/2/11

Y1 - 2022/2/11

N2 - An amplitude analysis of flavor-untagged B-s(0) -> J=psi p (p) over bar decays is performed using a sample of 797 +/- 31 decays reconstructed with the LHCb detector. The data, collected in proton-proton collisions between 2011 and 2018, correspond to an integrated luminosity of 9 fb(-1). Evidence for a new structure in the J=psi p and J=psi(p) over bar systems with a mass of 4337(-4-2)(+7+2) MeV and a width of 29(-12-14)(+26+14) MeV is found, where the first uncertainty is statistical and the second systematic, with a significance in the range of 3.1 to 3.7 sigma, depending on the assigned J(P) hypothesis.

AB - An amplitude analysis of flavor-untagged B-s(0) -> J=psi p (p) over bar decays is performed using a sample of 797 +/- 31 decays reconstructed with the LHCb detector. The data, collected in proton-proton collisions between 2011 and 2018, correspond to an integrated luminosity of 9 fb(-1). Evidence for a new structure in the J=psi p and J=psi(p) over bar systems with a mass of 4337(-4-2)(+7+2) MeV and a width of 29(-12-14)(+26+14) MeV is found, where the first uncertainty is statistical and the second systematic, with a significance in the range of 3.1 to 3.7 sigma, depending on the assigned J(P) hypothesis.

U2 - 10.1103/PhysRevLett.128.062001

DO - 10.1103/PhysRevLett.128.062001

M3 - Article

SN - 0031-9007

VL - 128

SP - 1

EP - 11

JO - Physical Review Letters

JF - Physical Review Letters

IS - 6

M1 - 062001

ER -

Evidence for a New Structure in the J/ψp and J/ψ(p)over-bar Systems in Bs0 → J/ψp(p)over-bar Decays

Abstract / Description of output

Access to Document

Fingerprint

Projects

Experimental Particle Physics at the University of Edinburgh

Next generation photodetectors for future applications

Experimental Particle Physics at the University of Edinburgh

Cite this