An amplitude analysis of $B^- \\to D^- D^0 K_S^0$ decays is performed using proton-proton collision data, corresponding to an integrated luminosity of $9~\\text{fb}^{-1}$, collected with the LHCb detector at center-of-mass energies of $7$, $8$, and $13~\\text{TeV}$.<\/p>\n
A resonant structure of spin-parity $0^+$ is observed in the $D^0 K_S^0$ invariant-mass spectrum with a significance of $5.3\\sigma$. The mass and width of the state, modeled with a Breit-Wigner lineshape, are determined to be<\/p>\n
$2883 \\pm 11 \\pm 6~\\text{MeV}\/c^2 \\quad \\text{and} \\quad 87^{+22}_{-47} \\pm 6~\\text{MeV},$<\/p>\n
where the first uncertainties are statistical and the second systematic.<\/p>\n
These properties and the quark content are consistent with those of the open-charm tetraquark state $T_{cs0}^\\ast(2870)^0$ observed previously in the $D^+ K^-$ final state of the $B^- \\to D^- D^+ K^-$ decay.<\/p>\n
This result confirms the existence of the $T_{cs0}^\\ast(2870)^0$ state in a new decay mode. The $T_{cs1}^\\ast(2900)^0$ state, reported in the $B^- \\to D^- D^+ K^-$ decay, is also searched for in the $D^0 K_S^0$ invariant-mass spectrum of the $B^- \\to D^- D^0 K_S^0$ decay, without finding evidence for it.<\/p>\n","protected":false},"excerpt":{"rendered":"
An amplitude analysis of $B^- \\to D^- D^0 K_S^0$ decays is performed using proton-proton collision data, corresponding to an integrated luminosity of $9~\\text{fb}^{-1}$, collected with the LHCb detector at center-of-mass energies of $7$, $8$, and $13~\\text{TeV}$. A resonant structure of spin-parity $0^+$ is observed in the $D^0 K_S^0$ invariant-mass spectrum with a significance of $5.3\\sigma$. The mass and width of the state, modeled with a Breit-Wigner lineshape, are determined to […]<\/p>\n","protected":false},"author":14,"featured_media":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"publication-type":[30],"class_list":["post-32306","publication","type-publication","status-publish","hentry","publication-type-article"],"acf":[],"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/lamarr-institute.org\/de\/wp-json\/wp\/v2\/publication\/32306","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lamarr-institute.org\/de\/wp-json\/wp\/v2\/publication"}],"about":[{"href":"https:\/\/lamarr-institute.org\/de\/wp-json\/wp\/v2\/types\/publication"}],"author":[{"embeddable":true,"href":"https:\/\/lamarr-institute.org\/de\/wp-json\/wp\/v2\/users\/14"}],"version-history":[{"count":0,"href":"https:\/\/lamarr-institute.org\/de\/wp-json\/wp\/v2\/publication\/32306\/revisions"}],"wp:attachment":[{"href":"https:\/\/lamarr-institute.org\/de\/wp-json\/wp\/v2\/media?parent=32306"}],"wp:term":[{"taxonomy":"publication-type","embeddable":true,"href":"https:\/\/lamarr-institute.org\/de\/wp-json\/wp\/v2\/publication-type?post=32306"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}