1 Ocak 2023 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:264718</subfield>
  </datafield>
  <datafield tag="520" ind1=" " ind2=" ">
    <subfield code="a">&lt;p&gt;Annihilation dynamics plays a fundamental role in the baryon–antibaryon interaction ($\mathrm{B–}\stackrel{‾}{B}$) at low-energy and its strength and range are crucial in the assessment of possible baryonic bound states. Experimental data on annihilation cross sections are available for the $\mathrm{p–}\stackrel{‾}{p}$ system but not in the low relative momentum region. Data regarding the $\mathrm{B–}\stackrel{‾}{B}$ interaction with strange degrees of freedom are extremely scarce, hence the modeling of the annihilation contributions is mainly based on nucleon–antinucleon ($\mathrm{N–}\stackrel{‾}{N}$) results, when available. In this letter we present a measurement of the $\mathrm{p–}\stackrel{‾}{p}$, $\mathrm{p–}\stackrel{‾}{\Lambda }\oplus \stackrel{‾}{p}\text{–}\Lambda $ and $\Lambda \text{–}\stackrel{‾}{\Lambda }$ interaction using correlation functions in the relative momentum space in high-multiplicity triggered pp collisions at $\sqrt{s}\phantom{\rule{0.25em}{0ex}}=\phantom{\rule{0.25em}{0ex}}13$ TeV recorded by ALICE at the LHC. In the $\mathrm{p–}\stackrel{‾}{p}$ system the couplings to the mesonic channels in different partial waves are extracted by adopting a coupled-channel approach with recent χEFT potentials. The inclusion of these inelastic channels provides good agreement with the data, showing a significant presence of the annihilation term down to zero momentum. Predictions obtained using the Lednický–Lyuboshits formula and scattering parameters obtained from heavy-ion collisions, hence mainly sensitive to elastic processes, are compared with the experimental $\mathrm{p–}\stackrel{‾}{\Lambda }\oplus \stackrel{‾}{p}\text{–}\Lambda $ and $\Lambda \text{–}\stackrel{‾}{\Lambda }$ correlations. The model describes the $\Lambda \text{–}\stackrel{‾}{\Lambda }$ data and underestimates the $\mathrm{p–}\stackrel{‾}{\Lambda }\oplus \stackrel{‾}{p}\text{–}\Lambda $ data in the region of momenta below 200 MeV/c. The observed deviation indicates a different contribution of annihilation channels to the two systems containing strange hadrons.&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">md5:0b78b25b50761d1f89d60bb080af9751</subfield>
    <subfield code="s">2182442</subfield>
    <subfield code="u">https://aperta.ulakbim.gov.trrecord/264718/files/j.physletb.2022.137060.pdf</subfield>
  </datafield>
  <controlfield tag="005">20240604112421.0</controlfield>
  <datafield tag="260" ind1=" " ind2=" ">
    <subfield code="c">2023-01-01</subfield>
  </datafield>
  <datafield tag="024" ind1=" " ind2=" ">
    <subfield code="a">10.1016/j.physletb.2022.137060</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">Investigating the role of strangeness in baryon–antibaryon annihilation at the LHC</subfield>
  </datafield>
  <datafield tag="909" ind1="C" ind2="4">
    <subfield code="v">829 C</subfield>
    <subfield code="p">Physics Letters B</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">264718</controlfield>
  <datafield tag="980" ind1=" " ind2=" ">
    <subfield code="a">user-scoap3-turkiye</subfield>
  </datafield>
</record>