Using a data sample of pairs collected on the resonance with the Belle detector at the KEKB asymmetric energy collider, we report the observation of and the first observation of . We measure a decay branching fraction of in for with a significance of 5.5 standard deviations. The contribution from is excluded. We measure a decay branching fraction of for with with a significance of 5.4 standard deviations. We study the difference of the distributions in and .
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"titles": [
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"source": "APS",
"title": "Study of <math><mi>B</mi><mo>\u2192</mo><mi>p</mi><mover><mi>p</mi><mo>\u00af</mo></mover><mi>\u03c0</mi><mi>\u03c0</mi></math>"
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"value": "10.1103/PhysRevD.101.052012"
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"journal_volume": "101",
"journal_title": "Physical Review D",
"material": "article",
"journal_issue": "5",
"year": 2020
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"page_nr": [
8
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"url": "https://creativecommons.org/licenses/by/4.0/",
"license": "CC-BY-4.0"
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"statement": "Published by the American Physical Society",
"year": "2020"
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"collaborations": [
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"value": "Belle Collaboration"
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"abstracts": [
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"source": "APS",
"value": "Using a data sample of <math><mn>772</mn><mo>\u00d7</mo><msup><mn>10</mn><mn>6</mn></msup><mtext> </mtext><mtext> </mtext><mi>B</mi><mover><mi>B</mi><mo>\u00af</mo></mover></math> pairs collected on the <math><mi>\u03d2</mi><mo>(</mo><mn>4</mn><mi>S</mi><mo>)</mo></math> resonance with the Belle detector at the KEKB asymmetric energy <math><msup><mi>e</mi><mo>+</mo></msup><msup><mi>e</mi><mo>\u2212</mo></msup></math> collider, we report the observation of <math><msup><mi>B</mi><mn>0</mn></msup><mo>\u2192</mo><mi>p</mi><mover><mi>p</mi><mo>\u00af</mo></mover><msup><mi>\u03c0</mi><mo>+</mo></msup><msup><mi>\u03c0</mi><mo>\u2212</mo></msup></math> and the first observation of <math><msup><mi>B</mi><mo>+</mo></msup><mo>\u2192</mo><mi>p</mi><mover><mi>p</mi><mo>\u00af</mo></mover><msup><mi>\u03c0</mi><mo>+</mo></msup><msup><mi>\u03c0</mi><mn>0</mn></msup></math>. We measure a decay branching fraction of <math><mo>(</mo><mn>0.83</mn><mo>\u00b1</mo><mn>0.17</mn><mo>\u00b1</mo><mn>0.17</mn><mo>)</mo><mo>\u00d7</mo><msup><mn>10</mn><mrow><mo>\u2212</mo><mn>6</mn></mrow></msup></math> in <math><msup><mi>B</mi><mn>0</mn></msup><mo>\u2192</mo><mi>p</mi><mover><mi>p</mi><mo>\u00af</mo></mover><msup><mi>\u03c0</mi><mo>+</mo></msup><msup><mi>\u03c0</mi><mo>\u2212</mo></msup></math> for <math><msub><mi>M</mi><mrow><msup><mi>\u03c0</mi><mo>+</mo></msup><msup><mi>\u03c0</mi><mo>\u2212</mo></msup></mrow></msub><mo><</mo><mn>1.22</mn><mtext> </mtext><mtext> </mtext><mi>GeV</mi><mo>/</mo><msup><mi>c</mi><mn>2</mn></msup></math> with a significance of 5.5 standard deviations. The contribution from <math><msup><mi>B</mi><mn>0</mn></msup><mo>\u2192</mo><mi>p</mi><mover><mi>p</mi><mo>\u00af</mo></mover><msup><mi>K</mi><mn>0</mn></msup></math> is excluded. We measure a decay branching fraction of <math><mo>(</mo><mn>4.58</mn><mo>\u00b1</mo><mn>1.17</mn><mo>\u00b1</mo><mn>0.67</mn><mo>)</mo><mo>\u00d7</mo><msup><mn>10</mn><mrow><mo>\u2212</mo><mn>6</mn></mrow></msup></math> for <math><msup><mi>B</mi><mo>+</mo></msup><mo>\u2192</mo><mi>p</mi><mover><mi>p</mi><mo>\u00af</mo></mover><msup><mi>\u03c0</mi><mo>+</mo></msup><msup><mi>\u03c0</mi><mn>0</mn></msup></math> with <math><msub><mi>M</mi><mrow><msup><mi>\u03c0</mi><mo>+</mo></msup><msup><mi>\u03c0</mi><mn>0</mn></msup></mrow></msub><mo><</mo><mn>1.3</mn><mtext> </mtext><mtext> </mtext><mi>GeV</mi><mo>/</mo><msup><mi>c</mi><mn>2</mn></msup></math> with a significance of 5.4 standard deviations. We study the difference of the <math><msub><mi>M</mi><mrow><mi>p</mi><mover><mi>p</mi><mo>\u00af</mo></mover></mrow></msub></math> distributions in <math><msup><mi>B</mi><mn>0</mn></msup><mo>\u2192</mo><mi>p</mi><mover><mi>p</mi><mo>\u00af</mo></mover><msup><mi>\u03c0</mi><mo>+</mo></msup><msup><mi>\u03c0</mi><mo>\u2212</mo></msup></math> and <math><msup><mi>B</mi><mo>+</mo></msup><mo>\u2192</mo><mi>p</mi><mover><mi>p</mi><mo>\u00af</mo></mover><msup><mi>\u03c0</mi><mo>+</mo></msup><msup><mi>\u03c0</mi><mn>0</mn></msup></math>."
}
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