# Belle

 2019-06-2518:02 [PUBDB-2019-02587] Journal Article et al Search for $X ( 3872 )$ and $X ( 3915 )$ decay into $χ_ {c 1} π ^0$ in $B$ decays at Belle Physical review / D D 99(11), 111101 (2019) [10.1103/PhysRevD.99.111101]   We report a search for X(3872) and X(3915) in B+→χc1π0K+ decays. We set an upper limit of B(B+→X(3872)K+)×B(X(3872)→χc1π0)<8.1×10−6 and B(B+→X(3915)K+)×B(X(3915)→χc1π0)<3.8×10−5 at 90% confidence level. [...] Restricted: PDF PDF (PDFA); External link: Fulltext 2019-06-2517:54 [PUBDB-2019-02586] Journal Article et al Evidence for the decay $B ^0 → p \overline{p}π^ 0$ Physical review / D D 99(9), 091104 (2019) [10.1103/PhysRevD.99.091104]   We report a search for the charmless baryonic decay B0→p¯pπ0 with a data sample corresponding to an integrated luminosity of 711  fb−1 containing (772±10)×106 B¯B pairs. The data were collected by the Belle experiment running on the Υ(4S) resonance at the KEKB e+e− collider [...] Restricted: PDF PDF (PDFA); External link: Fulltext 2019-06-2517:33 [PUBDB-2019-02585] Journal Article et al Transverse momentum dependent production cross sections of charged pions, kaons and protons produced in inclusive $e^ + e ^−$ annihilation at $\sqrt= 10.58 GeV$ Physical review / D D 99(11), 112006 (2019) [10.1103/PhysRevD.99.112006]   We report measurements of the production cross sections of charged pions, kaons, and protons as a function of fractional energy, the event-shape variable called thrust, and the transverse momentum with respect to the thrust axis. These measurements access the transverse momenta created in the fragmentation process, which are of critical importance to the understanding of any transverse-momentum-dependent distribution and fragmentation functions. [...] Restricted: PDF PDF (PDFA); External link: Fulltext 2019-06-2516:53 [PUBDB-2019-02584] Journal Article et al First Measurements of Absolute Branching Fractions of the $Ξ _{c}^ 0$ Baryon at Belle Physical review letters 122(8), 082001 (2019) [10.1103/PhysRevLett.122.082001]   We present the first measurements of absolute branching fractions of Ξ0c decays into Ξ−π+, ΛK−π+, and pK−K−π+ final states. The measurements are made using a dataset comprising (772±11)×106 B¯B pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB e+e− collider. [...] Restricted: PDF PDF (PDFA); External link: Fulltext 2019-06-2516:36 [PUBDB-2019-02583] Journal Article et al Search for the rare decay of $B ^+ → ℓ ^+ ν ℓ γ$ with improved hadronic tagging Physical review / D D 98(11), 112016 (2019) [10.1103/PhysRevD.98.112016]   We present the result of the search for the rare B meson decay of B+→ℓ+νℓγ with ℓ=e,μ. For the search the full data set recorded by the Belle experiment of 711  fb−1 integrated luminosity near the Υ(4S) resonance is used [...] Restricted: PDF PDF (PDFA); External link: Fulltext 2019-06-2516:28 [PUBDB-2019-02582] Journal Article et al Search for $C P$ violation with kinematic asymmetries in the $D^ 0 → K ^+ K ^− π^ + π^ −$ decay Physical review / D D 99(1), 011104 (2019) [10.1103/PhysRevD.99.011104]   We search for CP violation in the singly-Cabibbo-suppressed decay D0→K+K−π+π− using data corresponding to an integrated luminosity of 988  fb−1 collected by the Belle detector at the KEKB e+e− collider. We measure a set of five kinematically dependent CP asymmetries, of which four asymmetries are measured for the first time. [...] Restricted: PDF PDF (PDFA); External link: Fulltext 2019-06-2516:12 [PUBDB-2019-02581] Journal Article et al Observation of $Ξ ( 1620 ) ^0$ and Evidence for $Ξ ( 1690 )^0$ in $Ξ _{c}^{+} → Ξ ^{−} \pi^{+} \pi^ {+}$ Decays Physical review letters 122(7), 072501 (2019) [10.1103/PhysRevLett.122.072501]   We report the first observation of the double strange baryon Ξ(1620)0 in its decay to Ξ−π+ via Ξ+c→Ξ−π+π+ decays based on a 980  fb−1 data sample collected with the Belle detector at the KEKB asymmetric-energy e+e− collider. The mass and width are measured to be 1610.4±6.0(stat)+6.1−4.2 (syst)  MeV/c2 and 59.9±4.8(stat)+2.8−7.1(syst)  MeV, respectively. [...] Restricted: PDF PDF (PDFA); External link: Fulltext 2019-06-2415:17 [PUBDB-2019-02573] Journal Article et al Measurement of time-dependent $C P$ violation in $B ^0 → K_ S ^0 π ^0 π^ 0$ decays Physical review / D D 99(1), 011102 (2019) [10.1103/PhysRevD.99.011102]   We report a measurement of time-dependent CP violation in B0→K0Sπ0π0 decays using a data sample of 772×106  B¯B pairs collected by the Belle experiment running at the Υ(4S) resonance at the KEKB e+e− collider. This decay proceeds mainly via a b→sd¯d “penguin” amplitude. [...] Restricted: PDF PDF (PDFA); External link: Fulltext 2019-06-2414:11 [PUBDB-2019-02571] Journal Article et al Measurement of the branching fraction and time-dependent C P asymmetry for $B^ 0 → J / ψ π^ 0$ decays Physical review / D D 98(11), 112008 (2019) [10.1103/PhysRevD.98.112008]   We measure the branching fraction and time-dependent CP-violating asymmetry for B0→J/ψπ0 decays using a data sample of 711  fb−1 collected on the Υ(4S) resonance by the Belle experiment running at the KEKB e+e− collider. The branching fraction is measured to be B(B0→J/ψπ0)=[1.62±0.11(stat)±0.06(syst)]×10−5, which is the most precise measurement to date. [...] Restricted: PDF PDF (PDFA); External link: Fulltext 2019-06-2413:57 [PUBDB-2019-02570] Journal Article et al Measurements of isospin asymmetry and difference of direct C P asymmetries in inclusive $B → X s γ$ decays Seminar, Meeting location, Contributions / Info Physical review / D D 99(3), 032012 (2019) [10.1103/PhysRevD.99.032012]   We report measurements of isospin asymmetry Δ0− and difference of direct CP asymmetries ΔACP between charged and neutral B→Xsγ decays. This analysis is based on the data sample containing 772×106B¯B pairs that was collected with the Belle detector at the KEKB energy-asymmetric e+e− collider [...] Restricted: PDF PDF (PDFA); External link: Fulltext