scholarly journals Study of e+e−→ϒ(1S,2S)η and e+e−→ϒ(1S)η′ at s=10.866  GeV with the Belle detector

2021 ◽  
Vol 104 (11) ◽  
Author(s):  
E. Kovalenko ◽  
A. Garmash ◽  
P. Krokovny ◽  
I. Adachi ◽  
H. Aihara ◽  
...  
Keyword(s):  
Belle Detector

scholarly journals Open charm studies at Belle

2019 ◽  
Vol 212 ◽  
pp. 09003
Author(s):  
Valentina Zhukova
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Open Charm ◽  
Mass Energy ◽  
Initial State ◽  
Belle Detector ◽  
Section Measurement ◽  
Angular Analysis ◽  
State Radiation ◽  
Radiation Technique

We present the new results of measurements of the exlusive cross sections of the e+ e− annihilation to charmed meson pairs as a function of √ ceneter-of-mass energy from the open charm threashold up to $ \sqrt s = {\rm{6 GeV}} $ using initial state radiation technique. The analysis is based on a data sample collected by the Belle detector with an integrated luminosity of 951 fb−1. The accuracy of the cross section measurement is increased by a factor of 2 in comparison with the first Belle study. We have performed the first angular analysis + −→ D*± D*∓ of the $ {e^{\rm{ + }}}{e^ - } \to {D^{* \pm }}{D^{* \mp }} $ process and decomposed this exclusive cross section into three components corresponding to the different D* helicities.

New Results on Double Charmonium Production in e+e- Annihilation at $\sqrt{s} \approx 10.6~{\rm GeV}$ with the Belle Detector

2005 ◽  
Vol 20 (16) ◽  
pp. 3617-3620
Author(s):  
◽  
T. Ziegler
Keyword(s):  
Cross Section ◽  
Strong Evidence ◽  
Previous Analysis ◽  
Charmonium State ◽  
Data Set ◽  
Charmonium Production ◽  
Belle Detector ◽  
Theoretical Predictions ◽  
Order Of Magnitude ◽  
The Cross

Extending a previous analysis1 the double charmonium production [Formula: see text] and [Formula: see text] has been investigated with a data set of 155 fb-1 with the Belle detector. Theoretical predictions for the cross section are one order of magnitude lower than the measured value and this discrepancy is still not understood. In a very recent update with a dataset of 285 fb-1 strong evidence for a new charmonium state at a mass of 3.940 GeV was found.

Rare B meson decays to charmed final states at Belle $(B\to D^{(*)} K^-, B^0\to D^+_s \pi^-)$

2001 ◽  
Vol 16 (supp01a) ◽  
pp. 464-467
Author(s):  
◽  
Yangheng Zheng
Keyword(s):  
B Meson ◽  
Branching Fraction ◽  
Final States ◽  
B Meson Decays ◽  
Meson Decays ◽  
Belle Detector ◽  
Upper Limit ◽  
Cabibbo Suppressed

We report observations of the Cabibbo-suppressed decays B→ D(*)K and an upper limit for the decay branching fraction for [Formula: see text] using a 5.3fb-1 data sample accumulated at the ϒ(4S) resonance with the Belle detector at the KEKB e+e- asymmetric collider.

The Belle detector

2002 ◽  
Vol 479 (1) ◽  
pp. 117-232 ◽  
Author(s):  
A. Abashian ◽  
K. Gotow ◽  
N. Morgan ◽  
L. Piilonen ◽  
S. Schrenk ◽  
...  
Keyword(s):  
Belle Detector

New Measurements of B → PV and VV Decays at Belle

2005 ◽  
Vol 20 (15) ◽  
pp. 3569-3577
Author(s):  
Kai-Feng Chen
Keyword(s):  
Storage Ring ◽  
Branching Fractions ◽  
Belle Detector ◽  
Polarization Study ◽  
Upper Limits

We present measurements of B → PV and VV decays based on 140 fb-1 of data recorded at the ϒ(4S) resonance with the Belle detector at the KEKB e+e- storage ring. Branching fractions of B → ηK*, ηρ+, ρπ0, and ρ+K* are measured; while upper limits of B → ηρ0 and ρ0K* decays are given. The polarization study of B → ϕK* is also updated.

scholarly journals SEARCH FOR A CHARMONIUM ASSIGNMENT FOR THE X(3872)

2005 ◽  
Vol 20 (02n03) ◽  
pp. 240-249 ◽  
Author(s):  
◽  
STEPHEN L. OLSEN
Keyword(s):  
Decay Process ◽  
Charmonium State ◽  
Belle Detector

We report recent results on the properties of the X(3872) produced via the B+→K+ X(3872) decay process in the Belle detector. We compare these properties with expectations for possible charmonium-state assignments.

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