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and 
at 
GeV with the Belle detectorKovalenko, E.*; 谷田 聖; Belle Collaboration*; 他181名*
Physical Review D, 104(11), p.112006_1 - 112006_12, 2021/12
被引用回数：0 パーセンタイル：0.01(Astronomy & Astrophysics)We report the first observation of the processes 
at 
=10.866 GeV with a 
and 
significance respectively. The measured Born cross sections are 
pb, and 
pb. We also set the upper limit on the cross section of the process 
to be 
~pb at 
CL. The results are obtained with the data sample collected with the Belle detector at the KEKB asymmetric-energy 
collider in the energy range from 10.63 GeV to 11.02 GeV.
moments of inclusive 
decays with hadronic taggingvan Tonder, R.*; 谷田 聖; Belle Collaboration*; 他202名*
Physical Review D, 104(11), p.112011_1 - 112011_32, 2021/12
被引用回数：10 パーセンタイル：65.5(Astronomy & Astrophysics)We present the measurement of the first to fourth order moments of the four-momentum transfer squared, , of inclusive decays using the full Belle data set of 711 
of integrated luminosity at the 
resonance where 
. The determination of these moments and their systematic uncertainties open new pathways to determine the absolute value of the CKM matrix element 
using a reduced set of matrix elements of the heavy quark expansion. In order to identify and reconstruct the 
system, we reconstruct one of the two 
-mesons using machine learning techniques in fully hadronic decay modes. The moments are measured with progressively increasing threshold selections on starting with a lower value of 3.0 
in steps of 0.5 up to a value of 10.0 . The measured moments are further unfolded, correcting for reconstruction and selection effects as well as QED final state radiation. We report the moments separately for electron and muon final states and observe no lepton flavor universality violating effects.
decaysCao, L.*; 谷田 聖; Belle Collaboration*; 他199名*
Physical Review Letters, 127(26), p.261801_1 - 261801_8, 2021/12
被引用回数：5 パーセンタイル：49.47(Physics, Multidisciplinary)The first measurements of differential branching fractions of inclusive semileptonic decays are performed using the full Belle data set of 711 fb
of integrated luminosity at the resonance and for . Differential branching fractions are reported as a function of the lepton momentum, the four-momentum-transfer squared, light-cone momenta, the hadronic mass, and the hadronic mass squared. They are obtained by subtracting the backgrounds from semileptonic 
decays and other processes, and corrected for resolution and acceptance effects. The measured distributions are compared to predictions from inclusive and hybrid calculations.
(
) with a hadronic tagging method at BelleAtmacan, H.*; 谷田 聖; Belle Collaboration*; 他219名*
Physical Review D, 104(9), p.L091105_1 - L091105_9, 2021/11
被引用回数：3 パーセンタイル：20.63(Astronomy & Astrophysics)We present a search for the lepton-flavor-violating decays , where 
, using the full data sample of 
pairs recorded by the Belle detector at the KEKB asymmetric-energy collider. We use events in which one meson is fully reconstructed in a hadronic decay mode. The 
lepton is reconstructed indirectly using the momentum of the reconstructed and that of the 
from the signal decay. We find no evidence for decays and set upper limits on their branching fractions at 90% confidence level of 
(
)
and (
)
.
and 
lifetimes at Belle IIAbudin
n, F.*; 谷田 聖; Belle II Collaboration*; 他385名*
Physical Review Letters, 127(21), p.211801_1 - 211801_9, 2021/11
被引用回数：6 パーセンタイル：56.02(Physics, Multidisciplinary)We report a measurement of the and lifetimes using 
and 
decays reconstructed in 
data recorded by the Belle II experiment at the SuperKEKB asymmetric-energy collider. The data, collected at center-of-mass energies at or near the resonance, correspond to an integrated luminosity of 
. The results, 
and 
, are the most precise to date and are consistent with previous determinations.
at Belle宇野 健太*; 谷田 聖; Belle Collaboration*; 他181名*
Journal of High Energy Physics (Internet), 2021(10), p.19_1 - 19_12, 2021/10
被引用回数：9 パーセンタイル：65.5(Physics, Particles & Fields)Charged lepton flavor violation is forbidden in the Standard Model but possible in several new physics scenarios. In many of these models, the radiative decays 
() are predicted to have a sizeable probability, making them particularly interesting channels to search at various experiments. An updated search via using full data of the Belle experiment, corresponding to an integrated luminosity of 988 fb, is reported for charged lepton flavor violation. No significant excess over background predictions from the Standard Model is observed, and the upper limits on the branching fractions, 
and 
, are set at 90% confidence level.
decay at BelleLi, S. X.*; 谷田 聖; Belle Collaboration*; 他193名*
Physical Review D, 104(7), p.072008_1 - 072008_8, 2021/10
被引用回数：3 パーセンタイル：29.55(Astronomy & Astrophysics)Using 980.6 
of data collected with the Belle detector operating at the KEKB asymmetric-energy collider, we present a measurement of the branching fraction of the singly Cabibbo-suppressed decay . A clear 
signal is observed for with a statistical significance of 9.1 standard deviations, and we measure the ratio of branching fractions 
, from which we infer the branching fraction 
. The first quoted uncertainty is statistical, the second systematic, and the third from the reference mode 
.
violation in 
, 
, and 
at BelleLi, L. K.*; 谷田 聖; Belle Collaboration*; 他187名*
Journal of High Energy Physics (Internet), 2021(9), p.75_1 - 75_21, 2021/09
被引用回数：1 パーセンタイル：10.54(Physics, Particles & Fields)We measure the branching fractions and asymmetries for the singly Cabibbo-suppressed decays , , and , using 980 fb of data from the Belle experiment at the KEKB collider. We obtain ![$$mathcal{B}(D^{0}topi^{+}pi^{-}eta) = [1.22pm 0.02,({rm stat})pm 0.02,({rm syst})pm 0.03,(mathcal{B}_{rm ref})]times 10^{-3},, mathcal{B}(D^{0}to K^{+}K^{-}eta) = [1.80,^{+0.07}_{-0.06},({rm stat})pm 0.04,({rm syst})pm 0.05,(mathcal{B}_{rm ref})]times 10^{-4},, mathcal{B}(D^{0}tophieta) = [1.84pm 0.09,({rm stat})pm 0.06,({rm syst})pm 0.05,(mathcal{B}_{rm ref})]times 10^{-4},, $$](/search/images/EROG0YLUNBRWC1D1IJ4SQRC4PMYH0XDUN3OHA0K4PMVX0XDQNFPHWLL3LRSXIYJJEA4SAWZRFYZDEXDQNUQDALRQGJOCYKD1LRZG0IDTORQXI5JJLRYG0IBQFYYDEXBMFB3VY2TNEBZXS21UPUUVY2DNEAYC2MBTLQWCQXDNMF0GQY1BNR3UE5K5PNOHE1JAOJSWM5JJLVOHI0LNMVZSAMJQLZ3S0M13LQWCYIC2NVQXI0DDMFWHWQ_ext.gif)
where the third uncertainty (
) is from the uncertainty in the branching fraction of the reference mode 
. The color-suppressed decay is observed for the first time, with very high significance. The results for the asymmetries are ![$$A_{CP}(D^{0}topi^{+}pi^{-}eta) = [0.9pm 1.2,({rm stat})pm 0.5,({rm syst})]%,, A_{CP}(D^{0}to K^{+}K^{-}eta) = [-1.4pm 3.3,({rm stat})pm 1.1,({rm syst})]%,, A_{CP}(D^{0}tophieta) = [-1.9pm 4.4,({rm stat})pm 0.6,({rm syst})]%,. $$](/search/images/ERAV440DKB4SQRC4PMYH0XDUN3OHA0K4PMVX0XDQNFPHWLL3LRSXIYJJEA4SAWZQFY2VY2DNEAYS2MS2FQUHWXDSNUQHG3DBOR4SSXDQNUQDALRVLQWCQ402OJWSA21ZON0H0KK3LQSVYLBMEBAV440DKB4SQRC4PMYH0XDUN2QEWXT1FN4UWXT1FV4VYZLUMEUSAPJALMWTCLRULRYG0IBTFYZVYLBIPNOHE1JAON0GC3D3FFOHA1_ext.gif)
The results for are a significant improvement over previous results. The branching fraction and 
results for , and the result for , are the first such measurements. No evidence for violation is found in any of these decays.
Li, Y.*; 谷田 聖; Belle Collaboration*; 他190名*
Physical Review D, 104(5), p.052005_1 - 052005_9, 2021/09
被引用回数：9 パーセンタイル：65.5(Astronomy & Astrophysics)Using a data sample of 980~fb collected with the Belle detector operating at the KEKB asymmetric-energy collider, we present evidence for the 
in the resonant substructure of 
(
= 
+ 
) decays. The significance of the signal is 4.2
after considering the systematic uncertainties. The ratio of the branching fraction of 
relative to that of 
is calculated to be 0.220 
0.059(stat.) 0.035(syst.). The individual ratios of the branching fractions of the two isospin modes are also determined, and found to be 
=(9.6 3.2(stat.) 1.8(syst.))% and 
= (5.5 2.8(stat.) 0.7(syst.))%.
and 
baryonsYelton, J.*; 谷田 聖; Belle Collaboration*; 他205名*
Physical Review D, 104(5), p.052003_1 - 052003_8, 2021/09
被引用回数：4 パーセンタイル：37.94(Astronomy & Astrophysics)Using 980 
of data 
with the Belle detector operating at the KEKB asymmetric-energy collider, we report the measurements of the masses, and the first measurements of the instrinsic widths, of the and charmed baryons. We find 
, 
, 
, and 
, where the uncertainties are statistical and systematic, respectively. These measurements can be used to test models of the underlying quark structure of the 
states.
and the asymmetry parameter of 
Li, Y. B.*; 谷田 聖; Belle Collaboration*; 他182名*
Physical Review Letters, 127(12), p.121803_1 - 121803_8, 2021/09
被引用回数：26 パーセンタイル：91.72(Physics, Multidisciplinary)Using data samples of 89.5 and 711 fb recorded at energies of 
and 
GeV, respectively, with the Belle detector at the KEKB collider, we report measurements of branching fractions of semileptonic decays (
or 
) and the -asymmetry parameter of decay. The branching fractions are measured to be 
)=(
)% and 
)=(
)%, and the decay parameter 
is measured to be 
with much improved precision compared to the current world average. The corresponding ratio 
/
is 1.03 0.05 0.07, which is consistent with the expectation of lepton flavor universality. The first measured asymmetry parameter 
is found to be consistent with zero. The first and the second uncertainties above are statistical and systematic, respectively, while the third ones arise due to the uncertainty of the 
branching fraction.
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：10.54(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.
decays with hadronic taggingCao, L.*; 谷田 聖; Belle Collaboration*; 他236名*
Physical Review D, 104(1), p.012008_1 - 012008_32, 2021/07
被引用回数：10 パーセンタイル：65.5(Astronomy & Astrophysics)We present measurements of partial branching fractions of inclusive semileptonic decays using the full Belle data set of 711 fb of integrated luminosity at the resonance and for . Inclusive semileptonic decays are CKM suppressed and measurements are complicated by the large background from CKM-favored 
transitions, which have a similar signature. Using machine learning techniques, we reduce this and other backgrounds effectively, whilst retaining access to a large fraction of the phase space and high signal efficiency. We measure partial branching fractions in three phase-space regions covering about 
to 
of the accessible phase space. The most inclusive measurement corresponds to the phase space with lepton energies of 
GeV, and we obtain 
from a two-dimensional fit of the hadronic mass spectrum and the four-momentum-transfer squared distribution, with the uncertainties denoting the statistical and systematic error. We find 
from an average of four calculations for the partial decay rate with the third uncertainty denoting the average theory error. This value is higher but compatible with the determination from exclusive semileptonic decays within 1.3 standard deviations.
at Belle using a semi-inclusive methodDubey, S.*; 谷田 聖; Belle Collaboration*; 他171名*
Physical Review D, 104(1), p.012007_1 - 012007_11, 2021/07
被引用回数：1 パーセンタイル：10.54(Astronomy & Astrophysics)We report the first search for the penguin-dominated process using a semi-inclusive method. A 121.4 integrated luminosity data set collected by the Belle experiment, at the KEKB asymmetric-energy collider, is used. We observe no statistically significant signal and including all uncertainties, we set a 90% confidence level upper limit on the partial branching fraction at 1.4 
10
for 
2.4 GeV/
.
in 
at near 10.6 GeV at BelleJia, S.*; 谷田 聖; Belle Collaboration*; 他200名*
Physical Review D, 104(1), p.012012_1 - 012012_9, 2021/07
被引用回数：0 パーセンタイル：0.01(Astronomy & Astrophysics)For the first time we search for the in at = 10.52, 10.58, and 10.867 GeV with data samples of 89.5 fb, 711 fb, and 121.4 fb, respectively, accumulated with the Belle detector at the KEKB asymmetric energy electron-positron collider. No significant signal is observed in the mass range between 3.8 and 3.88 GeV/
. The upper limit at 90% confidence level on the product of the Born cross section for 
and branching fraction for 
is determined to be 
4.9 fb at near 10.6 GeV.
, 
, and 
decays at BelleJia, S.*; 谷田 聖; Belle Collaboration*; 他186名*
Journal of High Energy Physics (Internet), 2021(6), p.160_1 - 160_13, 2021/06
被引用回数：4 パーセンタイル：37.94(Physics, Particles & Fields)Using a data sample of 980 fb collected with the Belle detector at the KEKB asymmetric-energy collider, we study the processes of , , and for the first time. The relative branching ratios to the normalization mode of 
are measured to be 
where the uncertainties are statistical and systematic, respectively. We obtain the branching fractions of , , and to be 
where the uncertainties are statistical, systematic, and from 
, respectively. The asymmetry parameters 
and 
are 
and 
, respectively, where the uncertainties are statistical followed by systematic.
, 
and 
exclusive cross sectionsMizuk, R.*; 谷田 聖; Belle Collaboration*; 他188名*
Journal of High Energy Physics (Internet), 2021(6), p.137_1 - 137_35, 2021/06
被引用回数：6 パーセンタイル：45.23(Physics, Particles & Fields)We report the first measurement of the exclusive cross sections , 
, and 
in the energy range from 10.63 GeV to 11.02 GeV. The mesons are fully reconstructed in a large number of hadronic final states and the three channels are identified using a beam-constrained-mass variable. The shapes of the exclusive cross sections show oscillatory behavior with several maxima and minima. The results are obtained using data collected by the Belle experiment at the KEKB asymmetric-energy collider.
asymmetries for 
and 
decays at BelleGuan, Y.*; 谷田 聖; Belle Collaboration*; 他202名*
Physical Review D, 103(11), p.112005_1 - 112005_11, 2021/06
被引用回数：5 パーセンタイル：45.23(Astronomy & Astrophysics)We report measurements of the branching fractions and asymmetries for 
, 
, and 
decays, and the branching fraction for 
. Our results are based on a data sample corresponding to an integrated luminosity of 921 fb collected by the Belle detector at the KEKB asymmetric-energy collider. Our measurements of asymmetries in these decays are the most precise to-date; no evidence for violation is found.
McNeil, J. T.*; 谷田 聖; Belle Collaboration*; 他193名*
Physical Review D, 103(11), p.112002_1 - 112002_11, 2021/06
被引用回数：2 パーセンタイル：20.63(Astronomy & Astrophysics)Using the entire data sample of 
integrated luminosity collected with the Belle detector at the KEKB asymmetric-energy 
collider, we present an amplitude analysis measuring the branching fractions of the Cabibbo-allowed, 
-exchange resonant decay 
with a polarized 
and the non-resonant decay via a direct process . We present these measurements, relative to the normalization mode 
, and find branching ratios 
= 
and 
= 
which suggest that only minor cusping peaks occur in the combinatorial background of 
due to these 
decays.
Moon, T. J.*; 谷田 聖; Belle Collaboration*; 他203名*
Physical Review D, 103(11), p.L111101_1 - L111101_9, 2021/06
被引用回数：18 パーセンタイル：85.82(Astronomy & Astrophysics)We report results from a study of the spin and parity of using a 
data sample collected by the Belle detector at the KEKB asymmetric-energy collider. The decay angle distributions in the chain 
are analyzed to determine the spin of this charmed-strange baryon. The angular distributions strongly favor the spin 
over 
or 
, under an assumption that the lowest partial wave dominates in the decay. We also measure the ratio of decay branching fractions ![$$R={mathcal{B}[ Xi_{c}(2970)^+ to Xi_c(2645)^{0}pi^{+} ]} $$](/search/images/ERJD0402NVQXI0DDMFWHWQT3LMQFYWDJL33WG5JIGI2TOMBJLYVSAXDUN2QFYWDJL3RSQMRWGQ0SSXT1GB4VY2DJLZ3SW5JALV4SAJA.gif)
/ ![$${ mathcal{B}[ Xi_{c}(2970)^+ to Xi_c^{prime0}pi^{+} ]} $$](/search/images/ER3SAXDNMF0GQY1BNR3UE5K1EBOFQ0K5PNRX0KBSHE1TAKK4FMQFY3DPEBOFQ0K5MNPHWXDQOJUW0ZJQPVOHA0K4PMVX0IC3PUQCI.gif)
=1.67 
, where the last uncertainty is due to possible isospin-symmetry-breaking effects. This 
value favors the spin-parity 
with the spin of the light-quark degrees of freedom 
. This is the first determination of the spin and parity of a charmed-strange baryon.
