00 3 Study of Hadronic Five - Body Decays of Charmed Mesons
نویسندگان
چکیده
We study the decay of D+ and D+ s mesons into charged five-body final states, and report the discovery of the decay mode D+ → K+K−π+π+π−, as well as measurements of the branching ratios of the decay modes D+ → K−π+π+π+π−, D+ s → K+K−π+π+π−, D+ s → φπ +π+π− and D+/D+ s → π +π+π+π−π−. An analysis of the resonant substructure for D+ → K−π+π+π+π− and D+ s → K +K−π+π+π− is also included, with evidence suggesting that both decays proceed primarily through an a1 vector resonance. PACS numbers: 13.25.Ft, 14.40Lb The hadronic five-body decays of charmed mesons have been studied in recent years [1–6], but limited statistics have prevented precise measurements of their resonant substructure. Theoretical predictions are limited mainly to two-body decay modes, and little is known about how five-body final states are produced. Theoretical discussion suggests a “vector-dominance model,” in which heavy flavor mesons decay into a two-body intermediate state by emitting aW , which immediately hadronizes into a charged vector, axial vector, or pseudoscalar meson [7]. The charged meson then decays strongly to produce a many-body final state. Confirmation of this model could provide a mechanism for the production of five-body final states. The FOCUS Collaboration [8–10] has studied two five-body decay modes,
منابع مشابه
A Review of Hadronic and Rare B Decays
We review recent experimental results onB meson decays. These include measurements of the inclusive production of charmed and non-charmed mesons and baryons, the reconstruction of a large number of exclusive hadronic final states with charmed mesons, the search for exclusive hadronic final states without charmed mesons, and the first observation of the decay B → Kγ which is described by an elec...
متن کاملCabibbo favored hadronic decays of charmed baryons in flavor SU(3).
The two body Cabibbo favored hadronic decays of charmed baryons Λ+c , Ξ + c and Ξ 0 c into an octet or decuplet baryon and a pseudoscalar meson are examined in the SU(3) symmetry scheme. The numerical estimates for decay widths and branching ratios of some of the modes are obtained and are in good agreement with experiment. PACS number(s): 13.30.Eg, , 11.30.Hv, 11.40.Ha, 14.20.Kp
متن کاملExperimental results on hadronic c decays
Recent results involving hadronic decays of charmed mesons and baryons are reviewed. Information relevant to decay mechanisms and to light quark scalar mesons is discussed.
متن کاملNew Results on Charmed
In this paper we describe new measurements of Do and D+ hadronic and semileptonic decays made with the MARK III detector at SPEAR. In the hadronic decays of the Do and D+ , a high statistics determination of absolute D meson branching ratios is presented from fully reconstructed Db events. The same technique provides preliminary results of a search for Dono mixing. Using the charm cross section...
متن کاملar X iv : h ep - p h / 02 11 38 2 v 3 2 8 A pr 2 00 3 Gold - plated Mode of CP - Violation in Decays of Ξ bc Baryons
The model-independent method based on the triangle ideology is implemented to extract the CKM-matrix angle γ in the decays of doubly heavy baryons containing the charmed and beauty quarks. We analyze a color structure of diagrams and conditions to reconstruct two reference-triangles by tagging the flavor and CP eigenstates of D 0 ↔ ¯ D 0 mesons in the fixed exclusive channels. The characteristi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2003