Stefan-Gabriel Chitic scite author profile

Stefan-Gabriel Chitic

5Publications

1,008Citation Statements Received

146Citation Statements Given

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Affiliations

European Organization for Nuclear Research, Claude Bernard University Lyon 1, Institut National des Sciences Appliquées de Lyon

Publications

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Observation of a Narrow Pentaquark State, Pc(4312)+ , and of the Two-Peak Structure of the
Aaij¹,
Beteta²,
Adeva³
et al. 2019
Phys. Rev. Lett.

627

523

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A narrow pentaquark state, P c ð4312Þ þ , decaying to J=ψp, is discovered with a statistical significance of 7.3σ in a data sample of Λ 0 b → J=ψpK − decays, which is an order of magnitude larger than that previously analyzed by the LHCb Collaboration. The P c ð4450Þ þ pentaquark structure formerly reported by LHCb is confirmed and observed to consist of two narrow overlapping peaks, P c ð4440Þ þ and P c ð4457Þ þ , where the statistical significance of this two-peak interpretation is 5.4σ. The proximity of the Σ þ cD 0 and Σ þ cD Ã0 thresholds to the observed narrow peaks suggests that they play an important role in the dynamics of these states.

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Observation of CP Violation in Charm Decays

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Beteta²,

Adeva³

et al. 2019

Phys. Rev. Lett.

231

166

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Measurement of CP -Averaged Observables in the B0→K0
Aaij¹,
Beteta²,
Ackernley³
et al. 2020
Phys. Rev. Lett.*
227
11
135
0
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An angular analysis of the B 0 → K Ã0 ð→ K þ π − Þμ þ μ − decay is presented using a dataset corresponding to an integrated luminosity of 4.7 fb −1 of pp collision data collected with the LHCb experiment. The full set of CP-averaged observables are determined in bins of the invariant mass squared of the dimuon system. Contamination from decays with the K þ π − system in an S-wave configuration is taken into account. The tension seen between the previous LHCb results and the standard model predictions persists with the new data. The precise value of the significance of this tension depends on the choice of theory nuisance parameters.

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Study of the lineshape of the χc1(3872) state

Aaij¹,

Beteta²,

Ackernley³

et al. 2020

Phys. Rev. D

107

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

Aaij¹,

Beteta²,

Ackernley³

et al. 2020

Phys. Rev. Lett.

143

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