Modification of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>ω</mml:mi></mml:math>-Meson Lifetime in Nuclear Matter

Kotulla, M.; Trnka, D.; Muehlich, P.; Anton, G.; Bacelar, J. C. S.; Bartholomy, O.; Bayadilov, D.; Beloglazov, Y. A.; Bogendoerfer, R.; Castelijns, R.; Credé, V.; Dutz, H.; Ehmanns, A.; Elsner, D.; Ewald, R.; Fabry, I.; Fuchs, Markus; Essig, K.; Funke, Ch.; Gothe, R. W.; Gregor, R.; Gridnev, A.; Gutz, E.; Höeffgen, Stefan K.; Hoffmeister, P.; Horn, I.; Hoessl, J.; Jaeglé, I.; Junkersfeld, J.; Kalinowsky, H.; Klein, Frank; Klein, F.; Klempt, E.; Konrad, M.; Kopf, B.; Krusche, B.; Langheinrich, J.; Loehner, H.; Lopatin, I.; Lotz, J.; Lugert, S.; Menze, D.; Messchendorp, J. G.; Mertens, T.; Metag, V.; Mosel, U.; Nanova, M.; Novotny, R.; Ostrick, M.; Pant, L. M.; Pee, H. van; Pfeiffer, M.; Roy, A.; Radkov, A.; Schadmand, S.; Schmidt, Ch.; Schmieden, H.; Schoch, B.; Shende, S.; Suft, G.; Sumachev, V. V.; Szczepanek, T.; Suele, A.; Thoma, U.; Varma, R.; Walther, Dirk; Weinheimer, C.; Wendel, Ch.

doi:10.1103/physrevlett.100.192302

Cited by 88 publications

(39 citation statements)

References 30 publications

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“…This quantity was previously measured in nuclear photoproduction of ω and φ mesons [28][29][30], from which large in-medium widths of ∼100-150 MeV were extracted (see also Refs. [26,31,32] for theoretical evaluations).…”

Section: Transparency Ratio (Yield)mentioning

confidence: 98%

Medium modifications of theρmeson in nuclear photoproduction

et al. 2010

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We extend our recent study of dilepton invariant-mass spectra from the decays of ρ mesons produced by photon reactions off nuclei. We specifically focus on experimental spectra as recently measured by the CLAS Collaboration at the Thomas Jefferson National Accelerator Facility using carbon and iron nuclei. Building on our earlier work, we broaden our description to a larger set of observables to identify sensitivities to the medium effects predicted by microscopic calculations of the ρ spectral function. We compute mass spectra for several target nuclei and study the spectral shape as a function of the three-momentum of the outgoing lepton pair. We also compute the so-called nuclear transparency ratio, which provides an alternative means (and thus consistency check) of estimating the ρ width in the cold nuclear medium.

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Section: Transparency Ratio (Yield)mentioning

confidence: 98%

Medium modifications of theρmeson in nuclear photoproduction

et al. 2010

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“…We illustrate two different results: the first includes all ω productions (red squares) while the second takes only into account the primary ω production (black circles). We compare them to experimental data [77] and with calculations according two different models, namely, the Boltzmann-Uehling-Uhlenbeck transport code calculation by the Geissen group [77] and a Monte Carlo analysis by the Valencia group [77]. Experimental data were obtained in the Crystal Barrel/TAPS detector at the ELSA tagged photon facility in Bonn [77].…”

Section: E Nuclear Transparency For the ω Mesonmentioning

confidence: 99%

Nuclear photoproduction of vector mesons within a Monte Carlo approach

2014

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We present recent improvements in the CRISP code for nuclear reaction simulation. The photoproduction of vector mesons was included in the code, which can evaluate also final state interaction of these mesons with the nucleus. Effects such as shadowing, subthreshold production, and Pauli blocking can be observed. The model is described in detail and some important quantities, such as cross section and nuclear transparency, are calculated as examples of the potential of our code.

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“…In Refs. [30] and [80] the transparency ratio was used to determine the width of the ω meson in finite nuclei using a BUU transport approach. U.…”

Section: Nuclear Transparency In Thementioning

confidence: 99%

“…In fact, a recent reanalysis of the background of the reaction concluded that one cannot * tolos@kvi.nl determine the shift of the ω mass in the nucleus from that reaction [28]. In contrast, determination of the ω width in the medium by means of the production cross section in different nuclei, which leads to the transparency ratio [29], was rather successful, giving rise to an appreciable in-medium enhancement [25,30].…”

Section: Introductionmentioning

confidence: 99%

K̄*mesons in dense matter

et al. 2010

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We study the properties ofK * mesons in nuclear matter using a unitary approach in coupled channels within the framework of the local hidden gauge formalism and incorporating theKπ decay channel in matter. The in-mediumK * N interaction accounts for Pauli blocking effects and incorporates theK * self-energy in a self-consistent manner. We also obtain theK * (off-shell) spectral function and analyze its behavior at finite density and momentum. At a normal nuclear matter density, theK * meson feels a moderately attractive potential, while theK * width becomes five times larger than in free space. We estimate the transparency ratio of the γ A → K + K * − A reaction, which we propose as a feasible scenario at the present facilities to detect changes in the properties of theK * meson in nuclear medium.

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Modification of theω-Meson Lifetime in Nuclear Matter

Cited by 88 publications

References 30 publications

Medium modifications of theρmeson in nuclear photoproduction

Medium modifications of theρmeson in nuclear photoproduction

Nuclear photoproduction of vector mesons within a Monte Carlo approach

K̄*mesons in dense matter

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