Spin alignment and violation of the OZI rule in exclusive ? and ? production in pp collisions
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F14%3A00218823" target="_blank" >RIV/68407700:21340/14:00218823 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.nuclphysb.2014.07.020" target="_blank" >http://dx.doi.org/10.1016/j.nuclphysb.2014.07.020</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.nuclphysb.2014.07.020" target="_blank" >10.1016/j.nuclphysb.2014.07.020</a>
Alternative languages
Result language
angličtina
Original language name
Spin alignment and violation of the OZI rule in exclusive ? and ? production in pp collisions
Original language description
Exclusive production of the isoscalar vector mesons ? and ? is measured with a 190 GeV/c190 GeV/c proton beam impinging on a liquid hydrogen target. Cross section ratios are determined in three intervals of the Feynman variable xFxF of the fast proton. Asignificant violation of the OZI rule is found, confirming earlier findings. Its kinematic dependence on xFxF and on the invariant mass MpVMpV of the system formed by fast proton pfastpfast and vector meson V is discussed in terms of diffractive production of pfastVpfastV resonances in competition with central production. The measurement of the spin density matrix element ?00?00 of the vector mesons in different selected reference frames provides another handle to distinguish the contributions of thesetwo major reaction types. Again, dependences of the alignment on xFxF and on MpVMpV are found. Most of the observations can be traced back to the existence of several excited baryon states contributing to ? production which are absent in
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BF - Elementary particle theory and high energy physics
OECD FORD branch
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Result continuities
Project
<a href="/en/project/LG13031" target="_blank" >LG13031: Collaboration of the Czech Republic with CERN</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Nuclear Physics B
ISSN
0550-3213
e-ISSN
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Volume of the periodical
886
Issue of the periodical within the volume
září
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
24
Pages from-to
1078-1101
UT code for WoS article
000341344500035
EID of the result in the Scopus database
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