Nuclear mass number dependence of inclusive production of ω and ϕ mesons in 12 GeV<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>p</mml:mi><mml:mo>+</mml:mo><mml:mi>A</mml:mi></mml:mrow></mml:math>collisions

Tabaru, T.; En’yo, H.; Muto, R.; Naruki, M.; Yokkaichi, S.; Chiba, J.; Ieiri, M.; Sasaki, O.; Sekimoto, M.; Tanaka, Kazuhiro; Funahashi, H.; Fukao, Y.; Kitaguchi, Masaaki; Ishino, M.; Kanda, H.; Mihara, S.; Miyashita, T. S.; Miwa, K.; Murakami, T.; Nakura, T.; Sakuma, F.; Togawa, M.; Yamada, Shigeru; Yoshimura, Y.; Hamagaki, H.; Ozawa, K.

doi:10.1103/physrevc.74.025201

Cited by 21 publications

(13 citation statements)

References 42 publications

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“…All measured spectra are indeed consistent with a collisional broadening of the 161 The right hand side shows the acceptance for lepton pairs from ω → e + e − decays as a function of the rapidity and transverse momentum of the ω meson. 162 A quite different result has been obtained in the KEK-E325 experiment. Here, protons of 12 GeV were used to produce vector mesons on different targets.…”

Section: Nuclear Reactions With Elementary Probesmentioning

confidence: 93%

Hadrons in Strongly Interacting Matter

Leupold

Metag

Mosel

2010

Int. J. Mod. Phys. E

202

240

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We review the current status of theories and experiments aiming at an understanding and a determination of the properties of light vector and scalar mesons inside strongly interacting hadronic matter. Starting from a discussion of the relevant symmetries of QCD and their connection with the hadronic description through QCD sum rules we then discuss hadronic models used to calculate the in-medium self-energies of hadrons and their spectral functions. The difficulties to link these calculated properties to actual observables are emphasized. Finally, we review in detail all the running experiments searching for in-medium changes of vector and scalar mesons, both with relativistic heavy-ion reactions as well as with elementary reactions on (cold) nuclei. Inconsistencies among experimental results are discussed. While almost all experiments observe a considerable broadening of vector mesons inside the nuclear medium, no evidence for mass changes is observed in the majority of the experiments.

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Section: Nuclear Reactions With Elementary Probesmentioning

confidence: 93%

Hadrons in Strongly Interacting Matter

Leupold

Metag

Mosel

2010

Int. J. Mod. Phys. E

202

240

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“…A systematic study of φ-meson production in p+A collisions at a beam energy of 12 GeV was carried ot by the KEK-PS E325 Collaboration [52,23,53,54]. The slope α of the A αdependence was evaluated using C and Cu targets.…”

Section: φ-Meson Production In P+a Collisions At High Energiesmentioning

confidence: 99%

“…Some indications of φ-meson modification at normal nuclear densities have been reported from measurements involving photon [18] and proton beams [19,20,21,22,23]. The most remarkable observation in all these measurements is the anomalous A-dependence of φ-meson production.…”

Section: Introductionmentioning

confidence: 98%

A-dependence of φ-meson production in p + A collisions

Sibirtsev

Hammer²,

Meiβner

2008

Eur. Phys. J. A

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A systematic analysis of the A-dependence of φ-meson production in proton-nucleus collisions is presented. We apply different formalisms for the evaluation of the φ-meson distortion in nuclei and discuss the theoretical uncertainties of the data analysis. The corresponding results are compared to theoretical predictions. We also discuss the interpretation of the extracted results with respect to different observables and provide relations between frequently used definitions. The perspectives of future experiments are evaluated and estimates based on our systematical study are given. PACS. 11.80.Fv Eikonal approximation -11.80.La Multiple scattering -13.75.-n Hadron-induced low-and intermediate-energy reactions and scattering

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“…In the proton-proton (pp) collisions, the ratio of φ to ω cross sections obtained near φ meson threshold was found to violate the OZI rule by about an order of magnitude [5,6]. Studies of near-threshold φ meson production in pA collisions revealed the target mass dependence of A 0.56 (3) [7], and pointed to the momentum-dependent widening of the φ width in the nuclear medium, from where the φN absorption cross section of about 15-20 mb was estimated [9].…”

Section: Introductionmentioning

confidence: 99%

Centrality dependence of subthresholdϕmeson production in Ni + Ni collisions at1.9AGeV

Piasecki¹,

Tymiński²,

Herrmann³

et al. 2016

Phys. Rev. C

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We analysed the φ meson production in central Ni+Ni collisions at the beam kinetic energy of 1.93A GeV with the FOPI spectrometer and found the production probability per event of [8.6 ± 1.6 (stat) ± 1.5 (syst)] × 10 −4 . This new data point allows for the first time to inspect the centrality dependence of the subthreshold φ meson production in heavy-ion collisions. The rise of φ meson multiplicity per event with mean number of participants can be parameterized by the power function with exponent α = 1.8 ± 0.6. The ratio of φ to K − production yields seems not to depend within the experimental uncertainties on the collision centrality, and the average of measured values was found to be 0.36 ± 0.05.

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Nuclear mass number dependence of inclusive production of ω and ϕ mesons in 12 GeVp+Acollisions

Cited by 21 publications

References 42 publications

Hadrons in Strongly Interacting Matter

Hadrons in Strongly Interacting Matter

A-dependence of φ-meson production in p + A collisions

Centrality dependence of subthresholdϕmeson production in Ni + Ni collisions at1.9AGeV

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