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Title: Observation of a Charmed Baryon Decaying to D{sup 0}p at a Mass Near 2.94 GeV/c{sup 2}

Abstract

A search for charmed baryons decaying to D{sup 0}p reveals two states: the {lambda}{sub c}(2880){sup +} baryon and a previously unobserved state at a mass of [2939.8{+-}1.3(stat){+-}1.0(syst)] MeV/c{sup 2} and with an intrinsic width of [17.5{+-}5.2(stat){+-}5.9(syst)] MeV. Consistent and significant signals are observed for the K{sup -}{pi}{sup +} and K{sup -}{pi}{sup +}{pi}{sup -}{pi}{sup +} decay modes of the D{sup 0} in 287 fb{sup -1} annihilation data recorded by the BABAR detector at a center-of-mass energy of 10.58 GeV. There is no evidence in the D{sup +}p spectrum of doubly charged partners. The mass and intrinsic width of the {lambda}{sub c}(2880){sup +} baryon and relative yield of the two baryons are also measured.

Authors:
; ; ; ; ; ; ; ; ;  [1];  [2]; ;  [3]; ; ; ; ;  [4]; ;  [5]
  1. Laboratoire de Physique des Particules, F-74941 Annecy-le-Vieux (France)
  2. Universitat de Barcelona, Facultat de Fisica Dept. ECM, E-08028 Barcelona (Spain)
  3. Universita di Bari, Dipartimento di Fisica and INFN, I-70126 Bari (Italy)
  4. Institute of High Energy Physics, Beijing 100039 (China)
  5. University of Bergen, Institute of Physics, N-5007 Bergen (Norway) (and others)
Publication Date:
OSTI Identifier:
20861575
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 98; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevLett.98.012001; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ANNIHILATION; CHARMED BARYONS; D NEUTRAL MESONS; GEV RANGE 01-10; GEV RANGE 10-100; KAONS MINUS; MASS; PARTICLE DECAY; PIONS MINUS; PIONS PLUS

Citation Formats

Aubert, B., Barate, R., Bona, M., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J. P., Poireau, V., Tisserand, V., Zghiche, A., Grauges, E., Palano, A., Pappagallo, M., Chen, J. C., Qi, N. D., Rong, G., Wang, P., Zhu, Y. S., Eigen, G., and Ofte, I.. Observation of a Charmed Baryon Decaying to D{sup 0}p at a Mass Near 2.94 GeV/c{sup 2}. United States: N. p., 2007. Web. doi:10.1103/PHYSREVLETT.98.012001.
Aubert, B., Barate, R., Bona, M., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J. P., Poireau, V., Tisserand, V., Zghiche, A., Grauges, E., Palano, A., Pappagallo, M., Chen, J. C., Qi, N. D., Rong, G., Wang, P., Zhu, Y. S., Eigen, G., & Ofte, I.. Observation of a Charmed Baryon Decaying to D{sup 0}p at a Mass Near 2.94 GeV/c{sup 2}. United States. doi:10.1103/PHYSREVLETT.98.012001.
Aubert, B., Barate, R., Bona, M., Boutigny, D., Couderc, F., Karyotakis, Y., Lees, J. P., Poireau, V., Tisserand, V., Zghiche, A., Grauges, E., Palano, A., Pappagallo, M., Chen, J. C., Qi, N. D., Rong, G., Wang, P., Zhu, Y. S., Eigen, G., and Ofte, I.. Fri . "Observation of a Charmed Baryon Decaying to D{sup 0}p at a Mass Near 2.94 GeV/c{sup 2}". United States. doi:10.1103/PHYSREVLETT.98.012001.
@article{osti_20861575,
title = {Observation of a Charmed Baryon Decaying to D{sup 0}p at a Mass Near 2.94 GeV/c{sup 2}},
author = {Aubert, B. and Barate, R. and Bona, M. and Boutigny, D. and Couderc, F. and Karyotakis, Y. and Lees, J. P. and Poireau, V. and Tisserand, V. and Zghiche, A. and Grauges, E. and Palano, A. and Pappagallo, M. and Chen, J. C. and Qi, N. D. and Rong, G. and Wang, P. and Zhu, Y. S. and Eigen, G. and Ofte, I.},
abstractNote = {A search for charmed baryons decaying to D{sup 0}p reveals two states: the {lambda}{sub c}(2880){sup +} baryon and a previously unobserved state at a mass of [2939.8{+-}1.3(stat){+-}1.0(syst)] MeV/c{sup 2} and with an intrinsic width of [17.5{+-}5.2(stat){+-}5.9(syst)] MeV. Consistent and significant signals are observed for the K{sup -}{pi}{sup +} and K{sup -}{pi}{sup +}{pi}{sup -}{pi}{sup +} decay modes of the D{sup 0} in 287 fb{sup -1} annihilation data recorded by the BABAR detector at a center-of-mass energy of 10.58 GeV. There is no evidence in the D{sup +}p spectrum of doubly charged partners. The mass and intrinsic width of the {lambda}{sub c}(2880){sup +} baryon and relative yield of the two baryons are also measured.},
doi = {10.1103/PHYSREVLETT.98.012001},
journal = {Physical Review Letters},
number = 1,
volume = 98,
place = {United States},
year = {Fri Jan 05 00:00:00 EST 2007},
month = {Fri Jan 05 00:00:00 EST 2007}
}