% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @INPROCEEDINGS{Schnning:291944, author = {Schönning, Karin}, collaboration = {{COMPASS Collaboration}}, title = {{T}he {OZI} {R}ule and {S}pin {A}lignment of {V}ector {M}esons at {COMPASS}}, address = {Hamburg}, publisher = {Deutsches Elektronen-Synchrotron, DESY}, reportid = {PUBDB-2015-05678, DESY-PROC-2014-04}, pages = {165-168}, year = {2014}, abstract = {The reaction $p p \rightarrow p V p$ ($V$ = $\omega$, $\phi$) has been studied with the COMPASS spectrometer in 2008 and 2009, using a 190 GeV/c proton beam impinging on a liquid hydrogen target.The measured cross section ratio ratio violates the OZI prediction by a factor of $\approx$4. Its kinematic dependence of the Feynman $x_F$ and the $M_{pV}$ mass is discussed in terms of diffractive production of baryon resonances in competition with central production. The $M_{p\omega}$ spectrum has a rich structure, indicating the importance of baryon resonances decaying into $p\omega$, in sharp contrast to the structureless $M_{p\phi}$ spectrum. Outside the resonant region, the OZI violation factor is about 8, independently of $x_F$.The spin density matrix element $\rho_{00}$ of the vector mesons is studied in selected reference frames. Dependences of the vector meson spin alignment on $x_F$ and $M_{pV}$ are found.}, month = {Aug}, date = {2014-08-25}, organization = {Panic2014, Hamburg (Germany), 25 Aug 2014 - 29 Aug 2014}, keywords = {spin: alignment (autogen) / p: beam (autogen) / baryon resonance: production (autogen) / spin: density matrix (autogen) / Iizuka-Okubo-Zweig rule: violation (autogen) / cross section: ratio: measured (autogen) / hydrogen: liquid: target (autogen) / diffraction: production (autogen) / vector meson (autogen) / COMPASS (autogen) / spectrometer (autogen) / kinematics (autogen) / structure (autogen) / Feynman (autogen)}, cin = {ATLAS / CMS / UNI/EXP}, cid = {I:(DE-H253)ATLAS-20120731 / I:(DE-H253)CMS-20120731 / $I:(DE-H253)UNI_EXP-20120731$}, pnm = {611 - Fundamental Particles and Forces (POF3-611)}, pid = {G:(DE-HGF)POF3-611}, experiment = {EXP:(DE-MLZ)NOSPEC-20140101}, typ = {PUB:(DE-HGF)8 / PUB:(DE-HGF)15}, doi = {10.3204/DESY-PROC-2014-04/36}, url = {https://bib-pubdb1.desy.de/record/291944}, }