Aller au contenu principal
Accès ouvert déclaré 2026 article

First Measurement of the D s + → K 0 μ + ν μ Decay

0Citations signalées — pas une note de qualité
83Institutions déclarées
16Pays d’affiliation déclarés

Résumé fourni par la source

We report the first measurement of the semileptonic decay D_{s}^{+}→K^{0}μ^{+}ν_{μ}, using a sample of e^{+}e^{-} annihilation data corresponding to an integrated luminosity of 7.33 fb^{-1} collected at center-of-mass energies between 4.128 and 4.226 GeV with the BESIII detector at the BEPCII collider. The branching fraction of the decay is measured to be B(D_{s}^{+}→K^{0}μ^{+}ν_{μ})=(2.89±0.27_{stat}±0.12_{syst})×10^{-3}, where the first uncertainty is statistical and the second is systematic. Based on a simultaneous fit to the partial decay rates in q^{2} intervals measured in D_{s}^{+}→K^{0}μ^{+}ν_{μ} and D_{s}^{+}→K^{0}e^{+}ν_{e} decays, the product value of the form factor f_{+}^{K^{0}}(0) and the Cabibbo-Kobayashi-Maskawa matrix element |V_{cd}| is measured to be f_{+}^{K^{0}}(0)|V_{cd}|=0.140±0.008_{stat}±0.003_{syst}, which is the most precise determination to date. In addition, lepton flavor universality is tested for the first time with D_{s}^{+}→K^{0}ℓ^{+}ν_{ℓ} decays in full and separate q^{2} intervals. No violation is found.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.

Contrôle bibliographique ouvert

DOI retrouvé dans Crossref DOI retrouvé, mais le titre doit être comparé manuellement.

Titre Crossref
First Measurement of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:msubsup> <mml:mi>D</mml:mi> <mml:mi>s</mml:mi> <mml:mo>+</mml:mo> </mml:msubsup> <mml:mo stretchy="false">→</mml:mo> <mml:msup> <mml:mi>K</mml:mi> <mml:mn>0</mml:mn> </mml:msup> <mml:msup> <mml:mi>μ</mml:mi> <mml:mo>+</mml:mo> </mml:msup> <mml:msub> <mml:mi>ν</mml:mi> <mml:mi>μ</mml:mi> </mml:msub> </mml:math> Decay
Date Crossref
22/04/2026
Éditeur
American Physical Society (APS)
Type
journal-article

Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude et ne compte pas comme une seconde source scientifique indépendante.

Institutions déclarées

Budker Institute of Nuclear PhysicsUppsala UniversityZhengzhou UniversityJohannes Gutenberg University MainzUniversity of TurinUniversity of Science and Technology of ChinaJoint Institute for Nuclear ResearchPeking UniversityUniversity of Chinese Academy of SciencesNational 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 GeosciencesHenan UniversityNorth China Electric Power UniversityNanjing UniversityTsinghua UniversityFudan UniversityInstitute of Modern PhysicsGuangxi University of Science and TechnologyJilin UniversityJilin Medical UniversityHunan UniversityHunan Normal UniversityChung-Ang UniversityUniversity of BristolShandong UniversityYunnan UniversityHelmholtz Institute MainzRuhr University BochumUniversity of South ChinaUniversity of JinanLiaoning UniversityInner Mongolia UniversityRenmin University of ChinaHenan Normal UniversityUniversità degli Studi del Piemonte Orientale “Amedeo Avogadro”Piedmont UniversityNanjing Normal UniversityUniversity of FerraraUniversity of ManchesterUniversity of OxfordGSI Helmholtz Centre for Heavy Ion ResearchGuangxi UniversityShandong Normal UniversityIndiana UniversityUniversity of Hawaii SystemSuranaree University of TechnologySouth China Normal UniversityUniversity of the PunjabHangzhou Normal UniversityHuangshan UniversityUniversity of TarapacáUniversity of GroningenJustus-Liebig-Universität GießenLiaoning Normal UniversityQufu Normal UniversityHebei UniversityChina Center of Advanced Science and TechnologySichuan UniversityGuangxi Normal UniversityCentral China Normal UniversityShanxi University of Traditional Chinese MedicineHenan University of Science and TechnologyHenan University of TechnologyCentral South UniversityZhejiang UniversityCOMSATS University IslamabadUniversity of PerugiaIstituto Nazionale di Fisica Nucleare, Sezione di PerugiaShanghai Jiao Tong UniversityNear East UniversityBeihang UniversityYantai UniversityShanxi Normal UniversityUniversity of Science and Technology Liaoning

Une affiliation ne permet pas de déduire la nationalité d’un auteur.

Sujets associés

Particle physics theoretical and experimental studiesQuantum Chromodynamics and Particle InteractionsHigh-Energy Particle Collisions Research

BNTIC News n’est pas le producteur de ces données. Recherche à la demande dans Crossref, OpenAIRE, DOAJ, Europe PMC, HAL, DataCite, ROR et la Banque mondiale, sans clé ; OpenAlex reste optionnel. Aucun service payant requis, aucune donnée externe enregistrée en base. Sources et limites.