9 Mayıs 2024 Dergi makalesi Açık Erişim

CERN İşbirliği

MARC21 XML

<?xml version='1.0' encoding='UTF-8'?>
<record xmlns="http://www.loc.gov/MARC21/slim">
  <leader>00000nam##2200000uu#4500</leader>
  <datafield tag="909" ind1="C" ind2="O">
    <subfield code="p">user-scoap3-turkiye</subfield>
    <subfield code="o">oai:aperta.ulakbim.gov.tr:275079</subfield>
  </datafield>
  <datafield tag="520" ind1=" " ind2=" ">
    <subfield code="a">&lt;p&gt;We report the measurement of the inclusive cross sections for ${e}^{+}{e}^{-}\to \mathrm{nOCH}$ (where nOCH denotes non-open charm hadrons) with improved precision at center-of-mass (c.m.) energies from 3.645 to 3.871 GeV. We observe three resonances: $R\left(3760\right)$, $R\left(3780\right)$, and $R\left(3810\right)$ with significances of $8.1\sigma $, $13.7\sigma $, and $8.8\sigma $, respectively. The $R\left(3810\right)$ state is observed for the first time, while the $R\left(3760\right)$ and $R\left(3780\right)$ states are observed for the first time in the nOCH cross sections. Two sets of resonance parameters describe the energy-dependent line shape of the cross sections well. In set I [set II], the $R\left(3810\right)$ state has mass ($3805.7±1.1±2.7$) $\left[\left(3805.7±1.1±2.7\right)\right]\text{}\text{}\mathrm{MeV}/{c}^{2}$, total width ($11.6±2.9±1.9$) $\left[\left(11.5±2.8±1.9\right)\right]\text{}\text{}\mathrm{MeV}$, and an electronic width multiplied by the nOCH decay branching fraction of ($10.9±3.8±2.5$) $\left[\left(11.0±3.4±2.5\right)\right]\text{}\text{}\mathrm{eV}$. In addition, we measure the branching fractions $B\left[R\left(3760\right)\to \mathrm{nOCH}\right]=\left(25.2±16.1±30.4\right)%\left[\left(6.4±4.8±7.7\right)%\right]$ and $B\left[R\left(3780\right)\to \mathrm{nOCH}\right]=\left(12.3±6.6±8.3\right)%\left[\left(10.4±4.8±7.0\right)%\right]$ for the first time. The $R\left(3760\right)$ state can be interpreted as an open-charm (OC) molecular state, but containing a simple four-quark state component. The $R\left(3810\right)$ state can be interpreted as a hadrocharmonium state.&lt;/p&gt;</subfield>
  </datafield>
  <datafield tag="980" ind1=" " ind2=" ">
    <subfield code="a">publication</subfield>
    <subfield code="b">article</subfield>
  </datafield>
  <datafield tag="540" ind1=" " ind2=" ">
    <subfield code="a">Creative Commons Attribution</subfield>
    <subfield code="u">http://www.opendefinition.org/licenses/cc-by</subfield>
  </datafield>
  <datafield tag="100" ind1=" " ind2=" ">
    <subfield code="a">CERN İşbirliği</subfield>
    <subfield code="u">CERN</subfield>
  </datafield>
  <datafield tag="856" ind1="4" ind2=" ">
    <subfield code="z">md5:2a85b1911bef9b5f98a05535f2c2dfcf</subfield>
    <subfield code="s">433788</subfield>
    <subfield code="u">https://aperta.ulakbim.gov.trrecord/275079/files/PhysRevLett.132.191902.pdf</subfield>
  </datafield>
  <controlfield tag="005">20250417112138.0</controlfield>
  <datafield tag="260" ind1=" " ind2=" ">
    <subfield code="c">2024-05-09</subfield>
  </datafield>
  <datafield tag="024" ind1=" " ind2=" ">
    <subfield code="a">10.1103/PhysRevLett.132.191902</subfield>
    <subfield code="2">doi</subfield>
  </datafield>
  <datafield tag="542" ind1=" " ind2=" ">
    <subfield code="l">open</subfield>
  </datafield>
  <datafield tag="245" ind1=" " ind2=" ">
    <subfield code="a">First Observation of a Three-Resonance Structure in ${e}^{+}{e}^{-}\to \text{Nonopen}$ Charm Hadrons</subfield>
  </datafield>
  <datafield tag="909" ind1="C" ind2="4">
    <subfield code="v">132</subfield>
    <subfield code="p">Physical Review Letters</subfield>
    <subfield code="n">19</subfield>
  </datafield>
  <datafield tag="650" ind1="1" ind2="7">
    <subfield code="a">cc-by</subfield>
    <subfield code="2">opendefinition.org</subfield>
  </datafield>
  <controlfield tag="001">275079</controlfield>
  <datafield tag="980" ind1=" " ind2=" ">
    <subfield code="a">user-scoap3-turkiye</subfield>
  </datafield>
</record>