Observation of Exotic <math display="inline"><mrow><mi>J</mi><mo>/</mo><mi>ψ</mi><mi>ϕ</mi></mrow></math> Resonant Structure in Diffractive Processes in Proton-Proton Collisions

Aaij, Roel; Abdelmotteleb, Ahmed Sameh Wagih; Abellan Beteta, Carlos; Abudinén, Fernando Jesus; Ackernley, Thomas; Adefisoye, A.A.; Adefisoye, Ayomide Matthew; Adeva, Bernardo; Adinolfi, Marco; Adlarson, Patrik Harri

doi:10.1103/PhysRevLett.134.031902

Observation of Exotic $J / ψ ϕ$ Resonant Structure in Diffractive Processes in Proton-Proton Collisions

LHCb

Collaboration

Jul 19, 2024

12 pages

Published in:

Phys.Rev.Lett. 134 (2025) 3, 031902

Published: Jan 24, 2025

e-Print:

2407.14301 [hep-ex]

DOI:

10.1103/PhysRevLett.134.031902 (publication)

Report number:

LHCb-PAPER-2023-043,
CERN-EP-2024-149

Experiments:

CERN-LHC-LHCb

View in:

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reference search10 citations

Citations per year

Abstract: (APS)

The first study of

J / ψ ϕ

production in diffractive processes in proton-proton collisions is presented. The study is based on an LHCb dataset recorded at center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of

5 {fb}^{- 1}

. The data disfavor a nonresonant

J / ψ ϕ

production but are consistent with a resonant model including several resonant states observed previously only in

B^{+} \to J / ψ ϕ K^{+}

decays. The

χ_{c 0} (4500)

state is observed with a significance over

6 σ

and the

χ_{c 1} (4274)

is confirmed with a significance of more than

4 σ

.

Note:

All figures and tables, along with any supplementary material and additional information, are available at: https://lhcbproject.web.cern.ch/Publications/LHCbProjectPublic/LHCb-PAPER-2023-043.html (LHCb public pages)

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Observation of Exotic J/ψϕ Resonant Structure in Diffractive Processes in Proton-Proton Collisions

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Observation of Exotic $J / ψ ϕ$ Resonant Structure in Diffractive Processes in Proton-Proton Collisions