Measurement of branching fractions of Delta(+)(c) -> eta Lambda pi(+), eta Sigma(0)pi(+), Lambda(1670)pi(+), and eta Sigma(1385)(+)
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F21%3A10439862" target="_blank" >RIV/00216208:11320/21:10439862 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=.7B3MNGPYj" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=.7B3MNGPYj</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.103.052005" target="_blank" >10.1103/PhysRevD.103.052005</a>
Alternative languages
Result language
angličtina
Original language name
Measurement of branching fractions of Delta(+)(c) -> eta Lambda pi(+), eta Sigma(0)pi(+), Lambda(1670)pi(+), and eta Sigma(1385)(+)
Original language description
We report branching fraction measurements of four decay modes of the Lambda(+)(c) baryon, each of which includes an eta meson and a Lambda baryon in the final state, and all of which are measured relative to the Lambda(+)(c) -> pK(-) eta(+) decay mode. The results are based on a 980 fb(-1) data sample collected by the Belle detector at the KEKB asymmetric-energy e(+) e(-) collider. Two decays, Lambda(+)(c) -> eta Sigma(0)pi(+) and Lambda(1670)pi(+), are observed for the first time, while the measurements of the other decay modes, Lambda(+)(c) -> eta Lambda pi(+) and eta Sigma(1385)(+), are more precise than those made previously. We obtain relative branching fractions of B(Lambda(+)(c) -> eta Lambda pi(+)) / B(Lambda(+)(c) -> pK(-) pi(+)) = 0.293 +/- 0.003 +/- 0.014, B(Lambda(+)(c) -> eta Sigma(0)pi(+))/B(Lambda(+)(c) -> pK(-) pi(+)) = 0.120 +/- 0.006 +/- 0.010, B(Lambda(+)(c) -> Lambda(1670)pi(+)) x B(Lambda(1670) -> eta Lambda)/B(Lambda(+)(c) -> pK(-) pi(+)) = (5.54 +/- 0.29 +/- 0.73) x 10(-2), and B(Lambda(+)(c) -> eta Sigma(1385)(+))/B(Lambda(+)(c) -> pK(-) pi(+)) = 0.192 +/- 0.006 +/- 0.016. The mass and width of the Lambda(1670) are also precisely determined to be 1674.3 +/- 0.8 +/- 4.9 MeV/c(2) and 36.1 +/- 2.4 +/- 4.8 MeV, respectively, where the uncertainties are statistical and systematic, respectively.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10300 - Physical sciences
Result continuities
Project
<a href="/en/project/LTT17020" target="_blank" >LTT17020: Study of Beyond Standard Model Physics with the International Experiment Belle II in Japan</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review D
ISSN
2470-0010
e-ISSN
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Volume of the periodical
103
Issue of the periodical within the volume
5
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
052005
UT code for WoS article
000648528800001
EID of the result in the Scopus database
2-s2.0-85103319874