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Measurements of the absolute branching fractions of the doubly Cabibbo-suppressed decays D+ → K+π0, D+ → K+η and D+ → K+η′

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A bstract Using 20.3 fb − 1 of e + e − collision data collected at a center-of-mass energy of 3.773 GeV with the BESIII detector, we present the measurements of the absolute branching fractions of the doubly Cabibbo-suppressed decays D + → K + π 0 , D + → K + η and D + → K + η′ with the double-tag method, with significantly improved precision compared to the previous measurements. The statistical significance of each signal decay exceeds 10 σ . The branching fractions are determined to be ℬ( D + → K + π 0 ) = (1.45 ± 0.06 ± 0.08) × 10 − 4 , ℬ( D + → K + η ) = (1.17 ± 0.10 ± 0.03) × 10 − 4 and ℬ( D + → K + η′ ) = (1.88 ± 0.15 ± 0.11) × 10 − 4 , where the first uncertainties are statistical and the second systematic. The branching fractions of D + → K + η and D + → K + η′ are consistent with the world average values. The reported branching fraction of D + → K + π 0 deviates with the world average value by 3 σ .

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DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.

Titre Crossref
Measurements of the absolute branching fractions of the doubly Cabibbo-suppressed decays D+ → K+π0, D+ → K+η and D+ → K+η′
Date Crossref
21/10/2025
Éditeur
Springer Science and Business Media LLC
Type
journal-article

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Institutions déclarées

Institute of High Energy PhysicsNovosibirsk State UniversitySiberian Branch of the Russian Academy of SciencesBudker Institute of Nuclear PhysicsUppsala UniversityZhengzhou UniversityJohannes Gutenberg University MainzUniversity of TurinUniversity of Science and Technology of ChinaUniversity of Chinese Academy of SciencesSoutheast UniversityJoint Institute for Nuclear ResearchPeking UniversityNational Centre for Nuclear ResearchMongolian Academy of SciencesIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiIstituto Nazionale di Fisica Nucleare, Sezione di FerraraCarnegie Mellon UniversityUniversity of MünsterWuhan UniversityLanzhou UniversityIstinye UniversityNankai UniversityChina University of GeosciencesSoochow UniversityHenan UniversityNorth China Electric Power UniversityNanjing UniversityTsinghua UniversityFudan UniversityInstitute of Modern PhysicsGuangxi University of Science and TechnologyJilin UniversityJilin Medical UniversityHunan UniversityHunan Normal UniversitySun Yat-sen UniversityChung-Ang UniversityUniversity of BristolBristol Robotics LaboratoryShandong UniversityYunnan UniversityHelmholtz Institute MainzRuhr University BochumUniversity of South ChinaUniversity of JinanLiaoning UniversityInner Mongolia UniversityMoscow Institute of Physics and TechnologyHenan Normal UniversityUniversità degli Studi del Piemonte Orientale “Amedeo Avogadro”Piedmont UniversityCentral China Normal UniversityNanjing Normal UniversityUniversity of FerraraUniversity of ManchesterUniversity of OxfordGSI Helmholtz Centre for Heavy Ion ResearchGuangxi UniversityShandong Normal UniversityIndiana University BloomingtonIndiana UniversityUniversity of Hawaiʻi at MānoaUniversity of Hawaii SystemSuranaree University of TechnologySouth China Normal UniversityUniversity of the PunjabHangzhou Normal UniversityHuangshan UniversityUniversity of TarapacáUniversity of GroningenIndian Institute of Technology MadrasJustus-Liebig-Universität GießenLiaoning Normal UniversityQufu Normal UniversityGuangxi Normal UniversityHenan University of Science and TechnologyRenmin University of ChinaHebei UniversityChina Center of Advanced Science and TechnologySichuan UniversityShanxi University of Traditional Chinese MedicineShanxi UniversityHenan University of TechnologyCentral South UniversityZhejiang UniversityGoethe University FrankfurtInstitute of Business Administration KarachiCOMSATS University IslamabadUniversity of PerugiaIstituto Nazionale di Fisica Nucleare, Sezione di PerugiaKurchatov InstituteÉcole Polytechnique Fédérale de LausanneShanghai Jiao Tong UniversityInstitute of Particle PhysicsInstitute of Nuclear and Particle PhysicsNear East UniversityBeihang UniversityYantai UniversityShanxi Normal UniversityUniversity of Science and Technology Liaoning

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Particle physics theoretical and experimental studiesQuantum Chromodynamics and Particle InteractionsNeutrino Physics Research

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