Near-threshold production of ω mesons in the<i>pd</i><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mo>→</mml:mo></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>Heω reaction

Wurzinger, R.; Siebert, R.; Bisplinghoff, J.; Duval, M.; Ernst, J.; Frascaria, R.; Hinterberger, F.; Jaghoub, M. I.; Jahn, R.; Joosten, R.; Kozela, A.; Lippert, C.; T, von Oepen; Plouin, F.; Roudot, F.; Spang, W.; Warde, E.; Wilkin, C.

doi:10.1103/physrevc.51.r443

Cited by 31 publications

(31 citation statements)

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“…Imposing instead the compilation mass m ω = 781.94 ± 0.14 MeV [10] gives a value of the excess energy Q = 31.1 ± 0.4 MeV. This error bar might be underestimated since, due to dynamical effects, the apparent ω mass in hadronic production can easily change by some small fraction of the width [11]. The two Q determinations are broadly consistent and their mean is quoted in Table 1 at the highest T p .…”

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confidence: 99%

Near-Threshold Production ofωMesons in thepp→ppωReaction

et al. 1999

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The total cross section for ω production in the pp → ppω reaction has been measured at five c.m. excess energies from 3.8 to 30 MeV. The energy dependence is easily understood in terms of a strong protonproton final state interaction combined with a smearing over the width of the state. The ratio of near-threshold φ and ω production is consistent with the predictions of a one-pion-exchange model and the degree of violation of the OZI rule is similar to that found in the π − p → nω/φ reactions.

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confidence: 99%

Near-Threshold Production ofωMesons in thepp→ppωReaction

et al. 1999

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“…An unexpected suppression of the cross section near threshold was observed. Almost twenty years later, Wurzinger et al studied ω production in pd → 3 Heω at SATURNE at 20 different beam energies [4]. The production amplitude for ω production at θ * ω = 180 o turned out to be suppressed for p * ω ≤ 180 MeV/c in a way similar to that in π − p → nω.…”

Section: Introductionmentioning

confidence: 91%

“…The CELSIUS/WASA collaboration has performed measurements of pd → 3 Heω at two beam energies; at T p = 1450 MeV and at T p = 1360 MeV, which correspond to p * ω = 280 MeV/c and p * ω = 144 MeV/c, respectively. Thus we will obtain one cross section measurement well above the threshold region and one within the energy range where the suppression in the production amplitude was observed by [4]. In this contribution, we focus on the differential cross section at T p = 1450 MeV.…”

Section: Introductionmentioning

confidence: 96%

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The production of ω mesons in near the kinematic threshold

Schönning

2007

Nuclear Physics A

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“…However, in spite of the pronounced interest in the vector mesons ρ, ω and φ, so far there exist only a limited number of theoretical studies of the near-threshold pp → ppω [26][27][28][29][30] and pp → ppφ [26,31,32] reactions. This situation also holds for the near-threshold pn → d ω/φ [33,34] and pd → 3 He ω [35] reactions. From the experimental side, apart from the old data at high excess energies [36], only the total cross section data from SATURNE [37] were available until recently for pp → ppω in the near-threshold region with excess energies below Q = 31 MeV, where the excess energy Q is defined as, Q = √ s − F m F with √ s and m F being the total center-of-mass energy and masses of the particles in the final state, respectively.…”

Section: Introductionmentioning

confidence: 94%

Near-thresholdωandφmeson productions inppcollisions

Tsushima

Nakayama

2003

Phys. Rev. C

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Using a relativistic effective Lagrangian at the hadronic level, near-threshold ω and φ meson productions in proton proton (pp) collisions, pp → ppω/φ, are studied within the distorted wave Born approximation. Both initial and final state pp interactions are included. In addition to total cross section data, both ω and φ angular distribution data are used to constrain further the model parameters. For the pp → ppω reaction we consider two different possibilities: with and without the inclusion of nucleon resonances. The nucleon resonances are included in a way to be consistent with the π − p → ωn reaction. It is shown that the inclusion of nucleon resonances can describe the data better overall than without their inclusion. However, the SATURNE data in the range of excess energies Q < 31 MeV are still underestimated by about a factor of two. As for the pp → ppφ reaction it is found that the presently limited available data from DISTO can be reproduced by four sets of values for the vector and tensor φN N coupling constants. Further measurements of the energy dependence of the total cross section near threshold energies should help to constrain better the φN N coupling constant. PACS number(s): 25.40. Ve, 24.10.Jv, 13.75.Cs

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Near-threshold production of ω mesons in thepd→3Heω reaction

Cited by 31 publications

References 5 publications

Near-Threshold Production ofωMesons in thepp→ppωReaction

Near-Threshold Production ofωMesons in thepp→ppωReaction

The production of ω mesons in near the kinematic threshold

Near-thresholdωandφmeson productions inppcollisions

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