Observation of e(+) e(-) -> pi(+) pi(-) pi(0)chi(b1,2) (1P) and search for e(+) e (-) -> phi chi(b1,2) (1P) at root s=10.96-11.05 GeV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10387034" target="_blank" >RIV/00216208:11320/18:10387034 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1103/PhysRevD.98.091102" target="_blank" >https://doi.org/10.1103/PhysRevD.98.091102</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevD.98.091102" target="_blank" >10.1103/PhysRevD.98.091102</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Observation of e(+) e(-) -> pi(+) pi(-) pi(0)chi(b1,2) (1P) and search for e(+) e (-) -> phi chi(b1,2) (1P) at root s=10.96-11.05 GeV

Popis výsledku v původním jazyce

We report searches for the processes e(+) e(-) -&gt; pi(+)pi(-)pi(0)chi(bJ) and e(+) e(-) -&gt; phi chi(bJ) ( J = 1, 2) based on data samples collected by the Belle experiment at the KEKB collider. We report the first observation of the process e(+) e(-) -&gt; (pi(+)pi(-)pi(0))non-omega(b1) and first evidence for e(+) e(-) -&gt; omega chi(bJ) in the vicinity of the gamma(11020) resonance, with center- of- mass energies from 10.96 to 11.05 GeV. The significances for (pi(+)pi(-)pi(0))non-omega chi(b1) and omega chi(bJ) are greater than 5.3 sigma and 4.0 sigma, respectively. We also investigate the energy dependence of the e(+)e(-) -&gt; (pi(+)pi(-)pi(0)) chi(bJ) cross section, but we cannot determine whether the contributions are from the gamma(10860) and gamma(11020) resonances or nonresonant continuum processes. The signals for e(+) e(-) -&gt;phi chi(bj) are not significant, and the upper limits of the Born cross sections at the 90% confidence level are 0.7 and 1.0 pb for e(+)e(-) -&gt; phi chi(bJ) and phi chi b(2), respectively, for center- of- mass energies from 10.96 to 11.05 GeV.

Název v anglickém jazyce

Observation of e(+) e(-) -> pi(+) pi(-) pi(0)chi(b1,2) (1P) and search for e(+) e (-) -> phi chi(b1,2) (1P) at root s=10.96-11.05 GeV

Popis výsledku anglicky

We report searches for the processes e(+) e(-) -&gt; pi(+)pi(-)pi(0)chi(bJ) and e(+) e(-) -&gt; phi chi(bJ) ( J = 1, 2) based on data samples collected by the Belle experiment at the KEKB collider. We report the first observation of the process e(+) e(-) -&gt; (pi(+)pi(-)pi(0))non-omega(b1) and first evidence for e(+) e(-) -&gt; omega chi(bJ) in the vicinity of the gamma(11020) resonance, with center- of- mass energies from 10.96 to 11.05 GeV. The significances for (pi(+)pi(-)pi(0))non-omega chi(b1) and omega chi(bJ) are greater than 5.3 sigma and 4.0 sigma, respectively. We also investigate the energy dependence of the e(+)e(-) -&gt; (pi(+)pi(-)pi(0)) chi(bJ) cross section, but we cannot determine whether the contributions are from the gamma(10860) and gamma(11020) resonances or nonresonant continuum processes. The signals for e(+) e(-) -&gt;phi chi(bj) are not significant, and the upper limits of the Born cross sections at the 90% confidence level are 0.7 and 1.0 pb for e(+)e(-) -&gt; phi chi(bJ) and phi chi b(2), respectively, for center- of- mass energies from 10.96 to 11.05 GeV.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

<a href="/cs/project/LTT17020" target="_blank" >LTT17020: Studium fyziky za standardním modelem v mezinárodním experimentu Belle II v Japonsku</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review D

ISSN

2470-0010

e-ISSN

—

Svazek periodika

98

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

—

Kód UT WoS článku

000450266000001

EID výsledku v databázi Scopus

2-s2.0-85058071913