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Li, L. K.*; 谷田 聖; Belle Collaboration*; 他197名*
Physical Review D, 107(3), p.033003_1 - 033003_9, 2023/02
被引用回数:0 パーセンタイル:0.00(Astronomy & Astrophysics)We present measurements of the branching fractions for the singly Cabibbo-suppressed decays and
, and the doubly Cabibbo-suppressed decay
, based on 980
of data recorded by the Belle experiment at the KEKB
collider. We measure these modes relative to the Cabibbo-favored modes
and
. Our results for the ratios of branching fractions are
,
, and
, where the uncertainties are statistical and systematic, respectively. The second value corresponds to
, where
is the Cabibbo angle; this value is larger than other measured ratios of branching fractions for a doubly Cabibbo-suppressed charm decay to a Cabibbo-favored decay. Multiplying these results by world average values for
and
yields
,
, and
, where the third uncertainty is due to the branching fraction of the normalization mode. The first two results are consistent with, but more precise than, the current world averages. The last result is the first measurement of this branching fraction.
Li, S. X.*; 谷田 聖; Belle Collaboration*; 他197名*
Journal of High Energy Physics (Internet), 2022(3), p.90_1 - 90_11, 2022/03
被引用回数:7 パーセンタイル:62.02(Physics, Particles & Fields)We present the first measurement of the branching fraction of the singly Cabibbo-suppressed (SCS) decay with
, using a data sample corresponding to an integrated luminosity of 981
, collected by the Belle detector at the KEKB
asymmetric-energy collider. A significant
signal is observed for the first time with a signal significance of 5.4
. The relative branching fraction with respect to the normalization mode
is measured to be
,where the uncertainties are statistical and systematic, respectively. Using the world-average value of
, we obtain
,where the uncertainties are statistical, systematic, and from
, respectively.
Nisar, N. K.*; 谷田 聖; Belle Collaboration*; 他197名*
Physical Review D, 104(3), p.L031101_1 - L031101_8, 2021/08
被引用回数:1 パーセンタイル:7.41(Astronomy & Astrophysics)We report the results of the first search for the decay using
of data collected at the
resonance with the Belle detector at the KEKB asymmetric-energy
collider. We observe no significant signal and set a 90% confidence-level upper limit of
on the branching fraction of this decay.
Kaliyar, A. B.*; 谷田 聖; Belle Collaboration*; 他197名*
Physical Review D, 99(3), p.031102_1 - 031102_9, 2019/02
被引用回数:3 パーセンタイル:12.21(Astronomy & Astrophysics)We study charmless hadronic decays of charged mesons to the final states
and
using a
data sample that contains
pairs, and was collected at the
resonance with the Belle detector at the KEKB asymmetric-energy
collider. For
, the measured branching fraction and direct
asymmetry are
and [
]%, respectively. In the absence of a statistically significant signal for
, we obtain a 90% confidence-level upper limit on its branching fraction as
.
Berger, M.*; 谷田 聖; Belle Collaboration*; 他197名*
Physical Review D, 98(11), p.112006_1 - 112006_10, 2018/12
被引用回数:7 パーセンタイル:33.89(Astronomy & Astrophysics)We report measurements of the branching fractions of the decays ,
and
relative to the reference channel
. The analysis is based on the full data sample collected at and close to
resonance by the Belle detector at the KEKB asymmetric-energy
collider corresponding to the integrated luminosity of 711 fb
. We measure
,
and
. The listed uncertainties are statistical and systematic, respectively.
Fulsom, B. G.*; 谷田 聖; Belle Collaboration*; 他197名*
Physical Review Letters, 121(23), p.232001_1 - 232001_8, 2018/12
被引用回数:5 パーセンタイル:38.67(Physics, Multidisciplinary)We report the observation of decay based on analysis of the inclusive photon spectrum of
fb
of
collisions at the
center-of-mass energy collected with the Belle detector at the KEKB asymmetric-energy
collider. We measure a branching fraction of
, and derive an
mass of
MeV/
, where the uncertainties are statistical and systematic, respectively. The significance of our measurement is greater than 7 standard deviations, constituting the first observation of this decay mode.
Babu, V.*; 谷田 聖; Belle Collaboration*; 他197名*
Physical Review D, 97(1), p.011101_1 - 011101_8, 2018/01
被引用回数:11 パーセンタイル:47.10(Astronomy & Astrophysics)We search for violation in the charged charm meson decay
, based on a data sample corresponding to an integrated luminosity of
collected by the Belle experiment at the KEKB
asymmetric-energy collider. The measured
violating asymmetry is
, which is consistent with the standard model prediction and has a significantly improved precision compared to previous results.
Bhardwaj, V.*; 谷田 聖; Belle Collaboration*; 他197名*
Physical Review D, 93(5), p.052016_1 - 052016_13, 2016/03
被引用回数:25 パーセンタイル:69.42(Astronomy & Astrophysics)We report inclusive and exclusive measurements for and
production in
decays. We measure
and
. For the first time,
production in exclusive
decays in the modes
and
has been observed, along with first evidence for the
decay mode. For
production, we report the first observation in the
,
and
decay modes. Using these decay modes, we observe a difference in the production mechanism of
in comparison to
in
decays. In addition, we report searches for
and
in the
decay mode. The reported results use
events collected at the
resonance with the Belle detector at the KEKB asymmetric-energy
collider.