Strong decays of Tcc+ at NLO in an effective field theory

Lin Dai; Sean Fleming; Reed Hodges; Thomas Mehen

doi:10.1103/PhysRevD.107.076001

Strong decays of Tcc+ at NLO in an effective field theory

Lin Dai, Sean Fleming, Reed Hodges, Thomas Mehen

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

11 Scopus citations

Abstract

The Tcc+ exotic meson, discovered by the LHCb Collaboration in 2021, can be interpreted as a molecular state of D(∗)0 and D(∗)+ mesons. We compute next-to-leading-order (NLO) contributions to the strong decay of Tcc+ in an effective field theory for D mesons and pions, considering contributions from one-pion exchange and final-state rescattering. Corrections to the total width, as well as the differential distribution in the invariant mass of the final-state D-meson pair are computed. The results remain in good agreement with LHCb experimental results when the NLO contributions are added. The leading uncertainties in the calculation come from terms which depend on the scattering length and effective range in D-meson scattering.

Original language	English
Article number	076001
Journal	Physical Review D
Volume	107
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevD.107.076001
State	Published - 1 Apr 2023
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1103/PhysRevD.107.076001

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title = "Strong decays of Tcc+ at NLO in an effective field theory",

abstract = "The Tcc+ exotic meson, discovered by the LHCb Collaboration in 2021, can be interpreted as a molecular state of D(∗)0 and D(∗)+ mesons. We compute next-to-leading-order (NLO) contributions to the strong decay of Tcc+ in an effective field theory for D mesons and pions, considering contributions from one-pion exchange and final-state rescattering. Corrections to the total width, as well as the differential distribution in the invariant mass of the final-state D-meson pair are computed. The results remain in good agreement with LHCb experimental results when the NLO contributions are added. The leading uncertainties in the calculation come from terms which depend on the scattering length and effective range in D-meson scattering.",

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T1 - Strong decays of Tcc+ at NLO in an effective field theory

AU - Dai, Lin

AU - Fleming, Sean

AU - Hodges, Reed

AU - Mehen, Thomas

N1 - Publisher Copyright: © 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.

PY - 2023/4/1

Y1 - 2023/4/1

N2 - The Tcc+ exotic meson, discovered by the LHCb Collaboration in 2021, can be interpreted as a molecular state of D(∗)0 and D(∗)+ mesons. We compute next-to-leading-order (NLO) contributions to the strong decay of Tcc+ in an effective field theory for D mesons and pions, considering contributions from one-pion exchange and final-state rescattering. Corrections to the total width, as well as the differential distribution in the invariant mass of the final-state D-meson pair are computed. The results remain in good agreement with LHCb experimental results when the NLO contributions are added. The leading uncertainties in the calculation come from terms which depend on the scattering length and effective range in D-meson scattering.

AB - The Tcc+ exotic meson, discovered by the LHCb Collaboration in 2021, can be interpreted as a molecular state of D(∗)0 and D(∗)+ mesons. We compute next-to-leading-order (NLO) contributions to the strong decay of Tcc+ in an effective field theory for D mesons and pions, considering contributions from one-pion exchange and final-state rescattering. Corrections to the total width, as well as the differential distribution in the invariant mass of the final-state D-meson pair are computed. The results remain in good agreement with LHCb experimental results when the NLO contributions are added. The leading uncertainties in the calculation come from terms which depend on the scattering length and effective range in D-meson scattering.

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Strong decays of Tcc+ at NLO in an effective field theory

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