Separate mass scaling of the widths of the rapidity distributions for mesons and baryons at energies available at the Facility for Antiproton and Ion Research

Dey, Kalyan; Bhattacharjee, B.

doi:10.1103/physrevc.89.054910

Cited by 13 publications

(29 citation statements)

References 27 publications

(64 reference statements)

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“…The acceptance and reconstruction efficiency of , 3 H and 4 H species as a function of their decay length in the laboratory frame were used to correct the kinematics dependency of the measured yields within the experimental acceptance. In the case of hyperon, its total production cross section was intended to be estimated since UrQMD theoretical calculations [34,35] are considered to model the phase space reasonably [36][37][38][39][40][41][42]. Therefore, the phase space dependence within the experimental acceptance and reconstruction efficiency is first corrected, then the missing proportion of the hyperon phase space is also corrected by the obtained value reported in Table 1 as Monte Carlo acceptance correction.…”

Section: Hypernuclear Cross Section Inferencesmentioning

confidence: 99%

Hypernuclear production cross section in the reaction of 6Li + 12C at 2 A GeV

et al. 2015

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Hypernuclear production cross sections have been deduced for the first time with induced reaction of heavy ion beam on fixed target and by means of the invariant mass method by the HypHI Collaboration exploiting the reaction of 6 Li + 12 C at 2 A GeV or √ s N N = 2.70 GeV. A production cross section of 3.9 ± 1.4 μb for 3 H and of 3.1 ± 1.0 μb for 4 H respectively in the projectile rapidity region was inferred as well as the total production cross section of the hyperon was measured and found to be equal to 1.7 ± 0.8 mb. A global fit based on a Bayesian approach was performed in order to include and propagate statistical and systematic uncertainties. Production ratios of 3 H/ 4 H, 3 H/ and 4 H/ were included in the inference procedure. The strangeness population factors S 3 and S 4 of 3 H and 4 H respectively were extracted. In addition, the multiplicities of the hyperon, 3 H, and 4 H together with the rapidity and transversal momentum density distributions of the observed hypernuclei were extracted and reported.

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Section: Hypernuclear Cross Section Inferencesmentioning

confidence: 99%

Hypernuclear production cross section in the reaction of 6Li + 12C at 2 A GeV

et al. 2015

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“…These data proved to be very important for the study of the Λ(1405) region [37,38,39,40,41,42,43,44,45,46,47,48] which suggested the existence of two isoscalar poles in the Λ(1405) region. In [49] we present a coupled-channel partial wave analysis of CLAS data on γp → K + (πΣ) [28] and K + ( KN ) [50] and argue that photoproduction may offer new chances to study hyperon resonances.…”

Section: Introductionmentioning

confidence: 99%

Hyperon I: Partial-wave amplitudes for K-p scattering

et al. 2019

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Early data on K − induced reactions off protons are collected and used in a coupled-channel partial wave analysis (PWA). Data which had been published in the form of Legendre coefficients are included in the PWA. In a primary fit using 3* and 4* resonances only, we observe some significant discrepancies with the data. In a systematic search for new Λ and Σ hyperon resonances, additional candidates are found. The significance of the known and of the additional resonances is evaluated. Seventeen resonances listed with 1* or 2* and one resonance listed with 3* in the Review of Particle Properties cannot be confirmed, five new hyperons are suggested. The partial-wave amplitudes deduced in this analysis are compared to those from other analyses.

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“…9, and provided further evidence for the N (2000) 5 2 + . Also a large amount of pφ [53,54] up to nearly 3 GeV. In Fig.…”

Section: Vectormeson Photoproductionmentioning

confidence: 98%

N* Experiments and what they tell us about Strong QCD Physics

Burkert

2020

EPJ Web Conf.

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I give an overview on experimental studies of the spectrum and the structure of the excited states of the nucleon and what we can learn about their in ternal structure. One focus is on the efforts to obtain a more complete picture of the light-quark baryon exci tation spectrum employing electromagnetic beams that will allow us to draw some conclusions on the symme tries underlying the spectrum. For the higher mass ex citations, the full employment of coupled channel ap proaches is essential when searching for new excited states in the large amounts of data already accumulated in different channels involving a variety of polarization observables. The other focus is on the study of transition form factors and helicity amplitudes and their de pendences on Q2, especially on some of the more promi nent resonances, especially Δ(1232)3/2+, N(1440)1/2+, and negative parity states N(1535)1/2-, and N(1675)5/2-.These were obtained in pion and eta electroproduction experi ments off proton targets and have already led to further insights in the active degrees-of-freedom as a function of the distance scale involved.

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Separate mass scaling of the widths of the rapidity distributions for mesons and baryons at energies available at the Facility for Antiproton and Ion Research

Cited by 13 publications

References 27 publications

Hypernuclear production cross section in the reaction of 6Li + 12C at 2 A GeV

Hypernuclear production cross section in the reaction of 6Li + 12C at 2 A GeV

Hyperon I: Partial-wave amplitudes for K-p scattering

N* Experiments and what they tell us about Strong QCD Physics

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