Measurement of the mass and width of the Λc (2625)+ charmed baryon and the branching ratios of Λc (2625)+→ Σc0π+ and Λc (2625)+ → Σc++π-

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10476424" target="_blank" >RIV/00216208:11320/23:10476424 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=pN_8DXedFJ" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=pN_8DXedFJ</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.107.032008" target="_blank" >10.1103/PhysRevD.107.032008</a>

Result language
angličtina
Original language name
Measurement of the mass and width of the Λc (2625)+ charmed baryon and the branching ratios of Λc (2625)+→ Σc0π+ and Λc (2625)+ → Σc++π-
Original language description
Using the entire data sample of 980 fb(-1) collected at or near the gamma(4S) resonance with the Belle detector operating at the KEKB asymmetric-energy e(+)e(-) collider, we report the measurement of the mass, width, and the branching ratios of the Lambda(c) (2625)(+) charmed baryon. The mass difference between Lambda(c)(2625)(+) and Lambda(+)(c) is measured to be M(Lambda(c)(2625)(+)) - M(Lambda(+)(c)) = 341.518 +/- 0.006 +/- 0.049 MeV/c(2). The upper limit on the width is measured to be Gamma(Lambda(c)(2625)(+)) < 0.52 MeV/c(2) at 90% confidence level. Based on a full Dalitz plot fit, branching ratios with respect to the mode Lambda(c) (2625)(+) -> Lambda(+)(c)pi(+)pi(-) are measured to be B(Lambda(c) (2625)(+)->Sigma(0)(c)pi(+))/B(Lambda(c) (2625)(+)-> Lambda(+)(c) pi(+)pi(-)) = (5.19 +/- 0.23 +/- 0.40)% and B(Lambda(c) (2625)(+)->Sigma(++)(c)pi(-))/B(Lambda(c) (2625)(+)-> Lambda(+)(c) pi(+)pi(-)) = (5.13 +/- 0.26 +/- 0.32)% where the first and second uncertainties are statistical and systematic, respectively. These measurements can be used to further constrain the parameters of the underlying theoretical models.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10300 - Physical sciences

Project
<a href="/en/project/GA22-18469S" target="_blank" >GA22-18469S: Studies of the Beyond Standard Model phenomena in the flavor sector with the Belle II Experiment</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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