Spin density matrix elements in exclusive ρ meson muoproduction
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24510%2F23%3A00012058" target="_blank" >RIV/46747885:24510/23:00012058 - isvavai.cz</a>
Alternative codes found
RIV/68081731:_____/21:00549445
Result on the web
<a href="https://link.springer.com/article/10.1140/epjc/s10052-023-11359-4" target="_blank" >https://link.springer.com/article/10.1140/epjc/s10052-023-11359-4</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1140/epjc/s10052-023-11359-4" target="_blank" >10.1140/epjc/s10052-023-11359-4</a>
Alternative languages
Result language
angličtina
Original language name
Spin density matrix elements in exclusive ρ meson muoproduction
Original language description
We report on a measurement of Spin Density Matrix Elements (SDMEs) in hard exclusive rho(0) meson muo-production at COMPASS using 160 GeV/c polarised mu(+) and mu-beams impinging on a liquid hydrogen target. The measurement covers the kinematic range 5.0 GeV/c(2) V-L) indicate a violation of s-channel helicity conservation. Additionally, we observe a dominant contribution of natural-parity-exchange transitions and a very small contribution of unnatural-parity-exchange transitions, which is compatible with zero within experimental uncertainties. The results provide important input for modelling Generalised Parton Distributions (GPDs). In particular, they mayallow one to evaluate in a model-dependent way the role of parton helicity-flip GPDs in exclusive rho(0) production.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics
Result continuities
Project
<a href="/en/project/LM2018104" target="_blank" >LM2018104: Research Infrastructure for experiments at CERN</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
European Physical Journal C
ISSN
1434-6044
e-ISSN
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Volume of the periodical
83
Issue of the periodical within the volume
10
Country of publishing house
DE - GERMANY
Number of pages
25
Pages from-to
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UT code for WoS article
001095775200001
EID of the result in the Scopus database
2-s2.0-85174592149