Up and down quark structure of the proton

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00617336" target="_blank" >RIV/68378271:_____/24:00617336 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21340/24:00380907 RIV/00216208:11320/24:10494218
Result on the web
<a href="https://hdl.handle.net/11104/0364266" target="_blank" >https://hdl.handle.net/11104/0364266</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.110.L091101" target="_blank" >10.1103/PhysRevD.110.L091101</a>

Result language
angličtina
Original language name
Up and down quark structure of the proton
Original language description
We measure proton structure parameters sensitive primarily to valence quarks using 8.6 fb−1−1 of data collected by the D0 detector in s=1.96s =1.96 TeV ppˉppˉ collisions at the Fermilab Tevatron. We exploit the property of the forward-backward asymmetry in dilepton events to be factorized in to distinct structure parameters and electroweak quark-level asymmetries. Contributions to the asymmetry from ss, cc and bb quarks, as well as from uu and dd quarks, are suppressed allowing valence uu and dd quarks to be separately determined. We find and uu to dd quark ratio near the peak values in the quark density distributions that is smaller than predictions from modern parton distribution functions.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10303 - Particles and field physics

Project
<a href="/en/project/LTT18001" target="_blank" >LTT18001: Collaboration on experiments in Fermi National Accelerator Laboratory, USA</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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