Observation of a Charmed Baryon Decaying to D0p at a Mass Near 2.94 GeV/c2
- Authors
- Abachi S
- Abrams GS
- Adye T
- Ahmed S
- Alam MS
- Albert J
- Allen MT
- Allison J
- Allmendinger T
- Altenburg DD
- Andreassen R
- Andreotti M
- CARLO ANGELINI
- Anulli F
- Arnaud N
- Aston D
- Aubert B
- Azzolini V
- Baak M
- Back JJ
- Back JJ
- Baldini Ferroli R
- Band HR
- Band HR
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- Barate R
- Bard DJ
- Barlow NR
- Barlow RJ
- Barrett M
- Bartoldus R
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- Battaglia M
- Bauer JM
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- Behera PK
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- Benayoun M
- Benelli G
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- Bernard D
- Berryhill JW
- Best DS
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- Bettoni D
- Bevan AJ
- Bhimji W
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- Biasini M
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- Zghiche A
- Zhang J
- Zhang L
- Zhao HW
- Zhu YS
- Ziegler V
- Zito M
- Publication date
- 25 March 2006
- Publisher
- American Physical Society
- Doi
Abstract
A search for charmed baryons decaying to D 0 p reveals two states: the Λ c ( 2880 ) + baryon and a previously unobserved state at a mass of [ 2939.8 ± 1.3 ( stat ) ± 1.0 ( syst ) ] MeV / c 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 − π + and K − π + π − π + decay modes of the D 0 in 287 fb − 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 + p spectrum of doubly charged partners. The mass and intrinsic width of the Λ c ( 2880 ) + baryon and relative yield of the two baryons are also measuredSimilar works
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