Search for Pc(c)over-bars (4459)0 and Pc(c)over-bars (4338)0 in Υ(1S, 2S) Inclusive Decays at Belle
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10510176" target="_blank" >RIV/00216208:11320/25:10510176 - isvavai.cz</a>
Výsledek na webu
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=lWGlH0-ejF" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=lWGlH0-ejF</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/pf8m-6j69" target="_blank" >10.1103/pf8m-6j69</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Search for Pc(c)over-bars (4459)0 and Pc(c)over-bars (4338)0 in Υ(1S, 2S) Inclusive Decays at Belle
Popis výsledku v původním jazyce
Using data samples of 102 million Upsilon(1S) events and 158 million Upsilon(2S) events collected by the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider, we search for [udsc (c) over bar] pentaquark states decaying to J/psi Lambda.. Using the first observations of Upsilon(1S, 2S) inclusive decays to J/psi Lambda we find evidence of the P-c (c) over bars(4459)(0) state with a local significance of 3.3 standard deviations, including statistical and systematic uncertainties. We measure the mass and width of the P-c (c) over bars(4459)(0) to be (4471.7 +/- 4.8 +/- 0.6) MeV/c(2) and (2 2 +/- 13 +/- 3) MeV, respectively. The branching fractions for P-c (c) over bars (4459)(0) production are measured to be B[Upsilon(1S) -> P-c (c) over bars(4459)(0)/(P) over bar (c (c) over bars)(4459)(0) + anything] = (3.5 +/- 2.0 +/- 0.2) x 10(-6) and B[Upsilon(2S) -> P-c (c) over bars (4459)(0)/ (P) over bar (c (c) over bars)(4459)(0) + anything] = (2.9 +/- 1.7 +/- 0.4) x 10(-6). The inclusive branching fractions of Upsilon(1S, 2S) -> J/psi Lambda/(Lambda) over bar are measured to be B[Upsilon(1S) -> J/psi Lambda/(Lambda) over bar + anything] = (36.9 +/- 5.3 +/- 2.4) x 10(-6) and B[Upsilon(2S) -> J/psi Lambda/(Lambda) over bar + anything] = (22.3 +/- 5.7 +/- 3.1) x 10(-6). We measure the visible cross section sigma(e(+)e(-) -> J psi Lambda/(Lambda) over bar + anything) = (90 +/- 14 +/- 6) fb for the continuum production at root s = 10.52 GeV. In all cases, the first uncertainties are statistical and the second are systematic.
Název v anglickém jazyce
Search for Pc(c)over-bars (4459)0 and Pc(c)over-bars (4338)0 in Υ(1S, 2S) Inclusive Decays at Belle
Popis výsledku anglicky
Using data samples of 102 million Upsilon(1S) events and 158 million Upsilon(2S) events collected by the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider, we search for [udsc (c) over bar] pentaquark states decaying to J/psi Lambda.. Using the first observations of Upsilon(1S, 2S) inclusive decays to J/psi Lambda we find evidence of the P-c (c) over bars(4459)(0) state with a local significance of 3.3 standard deviations, including statistical and systematic uncertainties. We measure the mass and width of the P-c (c) over bars(4459)(0) to be (4471.7 +/- 4.8 +/- 0.6) MeV/c(2) and (2 2 +/- 13 +/- 3) MeV, respectively. The branching fractions for P-c (c) over bars (4459)(0) production are measured to be B[Upsilon(1S) -> P-c (c) over bars(4459)(0)/(P) over bar (c (c) over bars)(4459)(0) + anything] = (3.5 +/- 2.0 +/- 0.2) x 10(-6) and B[Upsilon(2S) -> P-c (c) over bars (4459)(0)/ (P) over bar (c (c) over bars)(4459)(0) + anything] = (2.9 +/- 1.7 +/- 0.4) x 10(-6). The inclusive branching fractions of Upsilon(1S, 2S) -> J/psi Lambda/(Lambda) over bar are measured to be B[Upsilon(1S) -> J/psi Lambda/(Lambda) over bar + anything] = (36.9 +/- 5.3 +/- 2.4) x 10(-6) and B[Upsilon(2S) -> J/psi Lambda/(Lambda) over bar + anything] = (22.3 +/- 5.7 +/- 3.1) x 10(-6). We measure the visible cross section sigma(e(+)e(-) -> J psi Lambda/(Lambda) over bar + anything) = (90 +/- 14 +/- 6) fb for the continuum production at root s = 10.52 GeV. In all cases, the first uncertainties are statistical and the second are systematic.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10300 - Physical sciences
Návaznosti výsledku
Projekt
Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2025
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Physical Review Letters
ISSN
0031-9007
e-ISSN
1079-7114
Svazek periodika
135
Číslo periodika v rámci svazku
04
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
9
Strana od-do
041901
Kód UT WoS článku
001552756300001
EID výsledku v databázi Scopus
2-s2.0-105013416663