Model-Independent Study of Structure in 𝐵+→𝐷+⁢𝐷−⁢𝐾+ Decays

LHCb collaboration; S. Playfer

doi:10.1103/PhysRevLett.125.242001

Model-Independent Study of Structure in 𝐵+→𝐷+⁢𝐷−⁢𝐾+ Decays

LHCb collaboration, S. Playfer

School of Physics and Astronomy

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

Abstract / Description of output

The only anticipated resonant contributions to 𝐵+→𝐷+⁢𝐷−⁢𝐾+ decays are charmonium states in the 𝐷+⁢𝐷− channel. A model-independent analysis, using LHCb proton-proton collision data taken at center-of-mass energies of √𝑠=7, 8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb−1, is carried out to test this hypothesis. The description of the data assuming that resonances only manifest in decays to the 𝐷+⁢𝐷− pair is shown to be incomplete. This constitutes evidence for a new contribution to the decay, potentially one or more new charm-strange resonances in the 𝐷−⁢𝐾+ channel with masses around 2.9 GeV/⁢𝑐2.

Original language	English
Article number	242001
Pages (from-to)	1-10
Number of pages	10
Journal	Physical Review Letters
Volume	125
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevLett.125.242001
Publication status	Published - 7 Dec 2020

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10.1103/PhysRevLett.125.242001Licence: Creative Commons: Attribution (CC-BY)

http://arxiv.org/abs/2009.00025

2 Finished
4 Active

Experimental Particle Physics at the University of Edinburgh
Leonidopoulos, C.
1/04/23 → 30/09/25
Project: Research
Experimental Particle Physics at the University of Edinburgh
Leonidopoulos, C.
1/10/22 → 30/09/25
Project: Research
Beautiful Flavours: Discovering New Physics with B-hadrons and Tau-leptons
Barter, W.
1/07/22 → 30/06/26
Project: Research

Cite this

@article{ac039eef97cc4b6a91dbfd48802e0c59,

title = "Model-Independent Study of Structure in 𝐵+→𝐷+⁢𝐷−⁢𝐾+ Decays",

abstract = "The only anticipated resonant contributions to 𝐵+→𝐷+⁢𝐷−⁢𝐾+ decays are charmonium states in the 𝐷+⁢𝐷− channel. A model-independent analysis, using LHCb proton-proton collision data taken at center-of-mass energies of √𝑠=7, 8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb−1, is carried out to test this hypothesis. The description of the data assuming that resonances only manifest in decays to the 𝐷+⁢𝐷− pair is shown to be incomplete. This constitutes evidence for a new contribution to the decay, potentially one or more new charm-strange resonances in the 𝐷−⁢𝐾+ channel with masses around 2.9 GeV/⁢𝑐2.",

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 S. Playfer",

year = "2020",

month = dec,

day = "7",

doi = "10.1103/PhysRevLett.125.242001",

language = "English",

volume = "125",

pages = "1--10",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

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TY - JOUR

T1 - Model-Independent Study of Structure in 𝐵+→𝐷+⁢𝐷−⁢𝐾+ 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 - Playfer, S.

PY - 2020/12/7

Y1 - 2020/12/7

N2 - The only anticipated resonant contributions to 𝐵+→𝐷+⁢𝐷−⁢𝐾+ decays are charmonium states in the 𝐷+⁢𝐷− channel. A model-independent analysis, using LHCb proton-proton collision data taken at center-of-mass energies of √𝑠=7, 8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb−1, is carried out to test this hypothesis. The description of the data assuming that resonances only manifest in decays to the 𝐷+⁢𝐷− pair is shown to be incomplete. This constitutes evidence for a new contribution to the decay, potentially one or more new charm-strange resonances in the 𝐷−⁢𝐾+ channel with masses around 2.9 GeV/⁢𝑐2.

AB - The only anticipated resonant contributions to 𝐵+→𝐷+⁢𝐷−⁢𝐾+ decays are charmonium states in the 𝐷+⁢𝐷− channel. A model-independent analysis, using LHCb proton-proton collision data taken at center-of-mass energies of √𝑠=7, 8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb−1, is carried out to test this hypothesis. The description of the data assuming that resonances only manifest in decays to the 𝐷+⁢𝐷− pair is shown to be incomplete. This constitutes evidence for a new contribution to the decay, potentially one or more new charm-strange resonances in the 𝐷−⁢𝐾+ channel with masses around 2.9 GeV/⁢𝑐2.

U2 - 10.1103/PhysRevLett.125.242001

DO - 10.1103/PhysRevLett.125.242001

M3 - Article

SN - 0031-9007

VL - 125

SP - 1

EP - 10

JO - Physical Review Letters

JF - Physical Review Letters

IS - 24

M1 - 242001

ER -

Model-Independent Study of Structure in 𝐵+→𝐷+⁢𝐷−⁢𝐾+ Decays

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Projects

Experimental Particle Physics at the University of Edinburgh

Experimental Particle Physics at the University of Edinburgh

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

Cite this