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            <title xml:lang="en">Measurement of the D0→π−e+νe differential decay branching fraction as a function of q2 and study of form factor parameterizations</title>
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                <forename type="first">J. P.</forename>
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                <forename type="first">V.</forename>
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                <forename type="first">A. M.</forename>
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                <surname>Malaescu</surname>
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                <surname>Stocchi</surname>
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                <forename>Sabine</forename>
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              <date type="whenSubmitted">2014-12-18 17:00:02</date>
              <date type="whenModified">2025-09-27 18:41:30</date>
              <date type="whenReleased">2014-12-19 09:02:06</date>
              <date type="whenProduced">2015</date>
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                  <forename>Sabine</forename>
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            <idno type="halRefHtml">&lt;i&gt;Physical Review D&lt;/i&gt;, 2015, 91 (5), pp.052022. &lt;a target="_blank" href="https://dx.doi.org/10.1103/PhysRevD.91.052022"&gt;&amp;#x27E8;10.1103/PhysRevD.91.052022&amp;#x27E9;&lt;/a&gt;</idno>
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            <idno type="stamp" n="IN2P3">Institut National de Physique Nucléaire et de Physique des Particules</idno>
            <idno type="stamp" n="UNIV-SAVOIE">Université Savoie Mont Blanc</idno>
            <idno type="stamp" n="UGA">HAL Grenoble Alpes</idno>
            <idno type="stamp" n="LAL">Laboratoire de l'Accélérateur Linéaire</idno>
            <idno type="stamp" n="LAPP" corresp="UNIV-SAVOIE">Laboratoire d'Annecy de Physique des Particules</idno>
            <idno type="stamp" n="CNRS">CNRS - Centre national de la recherche scientifique</idno>
            <idno type="stamp" n="UNIV-PSUD">Université Paris Sud - Paris XI</idno>
            <idno type="stamp" n="UNIV-PARIS-SACLAY">Université Paris-Saclay</idno>
            <idno type="stamp" n="UNIV-PSUD-SACLAY" corresp="UNIV-PARIS-SACLAY">Université Paris Sud pour Paris Saclay</idno>
            <idno type="stamp" n="USMB-COMUE">Université Savoie Mont Blanc - UGA [* - 2019]</idno>
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            <note type="commentary">28 pages, 15 postscript figures, submitted to Phys.Rev.D - See paper for full list of authors</note>
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            <note type="peer" n="1">Yes</note>
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                <title xml:lang="en">Measurement of the D0→π−e+νe differential decay branching fraction as a function of q2 and study of form factor parameterizations</title>
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                    <forename type="first">J. P.</forename>
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                    <forename type="first">A. M.</forename>
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                <title level="j">Physical Review D</title>
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                  <publisher>American Physical Society</publisher>
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                  <biblScope unit="issue">5</biblScope>
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                  <date type="datePub">2015</date>
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              <p>Based on a sample of 500 million e+e−→cc¯ events recorded by the BaBar detector at c.m. energies of close to 10.6 GeV, we report on a study of the decay D0→π−e+νe. We measure the ratio of branching fractions RD=B(D0→π−e+νe)/B(D0→K−π+)=0.0713±0.0017stat.±0.0024syst., and use the present world average for B(D0→K−π+) to obtain B(D0→π−e+νe)=(2.770±0.068stat.±0.092syst.±0.037ext.)×10−3 where the third error accounts for the uncertainty on the branching fraction for the reference channel. The measured dependence of the differential branching fraction on q2, the four-momentum transfer squared between the D and the π meson, is compared to various theoretical predictions for the hadronic form factor, fπ+,D(q2), and the normalization |Vcd|×fπ+,D(q2=0)=0.1374±0.0038stat.±0.0022syst.±0.0009ext. is extracted from a fit to data. Using the most recent LQCD prediction of fπ+,D(q2=0)=0.666±0.029, we obtain |Vcd|=0.206±0.007exp.±0.009LQCD. Assuming instead, |Vcd|=|Vus|=0.2252±0.0009, we obtain fπ+,D(q2=0)=0.610±0.020exp.±0.005ext.. The q2 dependence of fπ+,D(q2) is compared to a variety of multi-pole parameterizations. This information is applied to B0→π−e+νe decays and, combined with an earlier B0→π−e+νe measurement by BaBar, is used to derive estimates of |Vub|.</p>
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