Observation of a Charmed Baryon Decaying to D0p at a Mass Near 2.94GeV/c2

B. Aubert et al. (BABAR Collaboration)
Phys. Rev. Lett. 98, 012001 – Published 4 January 2007

Abstract

A search for charmed baryons decaying to D0p reveals two states: the Λc(2880)+ baryon and a previously unobserved state at a mass of [2939.8±1.3(stat)±1.0(syst)]MeV/c2 and with an intrinsic width of [17.5±5.2(stat)±5.9(syst)]MeV. Consistent and significant signals are observed for the Kπ+ and Kπ+ππ+ decay modes of the D0 in 287fb1 annihilation data recorded by the BABAR detector at a center-of-mass energy of 10.58 GeV. There is no evidence in the D+p spectrum of doubly charged partners. The mass and intrinsic width of the Λc(2880)+ baryon and relative yield of the two baryons are also measured.

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  • Received 25 March 2006

DOI:https://doi.org/10.1103/PhysRevLett.98.012001

©2007 American Physical Society

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Vol. 98, Iss. 1 — 5 January 2007

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