Study of the production of a strange (S = −1) dibaryon in the interactions of K− and π+ on deuterium below 1.5GeV/c

Pigot, C.; Brion, J.P. De; Caillet, A.; Chèze, J.B.; Derré, J.; Marel, G.; Pauli, E.; Vrana, G.; D’Agostini, G.; Auriemma, G.; Marini, G.; Martellotti, G.; Massa, F.; Nigro, A.; Rambaldi, Alicia N.; Sciubba, A.; Reucroft, S.; Roos, C. E.; Webster, M.; Williams, E.

doi:10.1016/0550-3213(85)90045-8

Cited by 40 publications

(18 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The data are taken from Refs. [4][5][6][7]9,10,31]. There is clearly a peak around the ΣN mass, i.e.…”

Section: The Reactionmentioning

confidence: 99%

“…This may point to differences in the reaction mechanism for the two processes, which has to be [12], and TOF [37]. The data from [4,6,9,10] are from strangeness exchange (2), the others are from associated strangeness production (4). Also shown are fits with a Breit-Wigner distributions (solid curves).…”

Section: Analysis Of the Peak Structurementioning

confidence: 99%

“…In this work we will concentrate on the two reactions (2) and (4). With regard to the former reaction, evidence for an enhancement in the Λp cross section near the ΣN threshold has been already found in the late 1960s and confirmed in later experiments [4][5][6][7][8][9][10]. We review those data and we also re-analyze them with the aim to determine accurately the position of this enhancement.…”

Section: Introductionmentioning

confidence: 99%

“…Possible shifts in the missing mass distributions in the bubble chamber measurements were minimized by studying the chamber magnetic field, energy range relation or kinematic fits to reference reactions. In the case of the kaon beam applied by Pigot et al [10] the incident beam was carefully measured with the help of a magnetic spectrometer. In the proton-proton experiments the question reduces to the precision with which the accelerator beam momentum is known.…”

Section: The Lower-mass Peakmentioning

confidence: 99%

See 3 more Smart Citations

Study of the Λp interaction close to the and thresholds

Machner¹,

Haidenbauer²,

Hinterberger³

et al. 2013

Nuclear Physics A

View full text Add to dashboard Cite

The Λp interaction close to the ΣN threshold is considered. Specifically, the pronounced structure seen in production reactions like K − d → π − Λp and pp → K + Λp around the ΣN threshold is analyzed. Modern interaction models of the coupled ΛN −ΣN systems generate such a structure either due to the presence of a (deuteron-like) unstable bound state or of an inelastic virtual state. A determination of the position of the prominent peak as observed in various experiments for the two aforementioned reactions leads to values that agree quite well with each other. Furthermore, the deduced mean value of 2128.7 ± 0.3 MeV for the peak position coincides practically with the threshold energy of the Σ + n channel. This supports the interpretation of the structure as a genuine cusp, signaling an inelastic virtual state in the 3 S1 − 3 D1 partial wave of the ΣN isospin 1/2 channel. There is also evidence for a second peak (or shoulder) in the data sets considered which appears at roughly 10-15 MeV above the ΣN 1 threshold. However, its concrete position varies significantly from data set to data set and, thus, a theoretical interpretation is difficult.

show abstract

“…The data are taken from Refs. [4][5][6][7]9,10,31]. There is clearly a peak around the ΣN mass, i.e.…”

Section: The Reactionmentioning

confidence: 99%

Section: Analysis Of the Peak Structurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: The Lower-mass Peakmentioning

confidence: 99%

See 2 more Smart Citations

Study of the Λp interaction close to the and thresholds

Machner¹,

Haidenbauer²,

Hinterberger³

et al. 2013

Nuclear Physics A

View full text Add to dashboard Cite

show abstract

“…[45] in a fixed target experiment at the CERN-PS [47], there is now a considerable number of charmed tetraquarks heavy mesons, with masses close to the DD * threshold (∼3876.6 MeV/c 2 ), detected in more than one experiment, 2 • X(3872) Discovered by BELLE in 2003 from the decay B + → (J/ψπ + π − ) K + . The quantum numbers of this meson are determined by LHCb to beJ PC = 1 ++ based on angular correlationB + → X(3872)K + where X(3872) → π + π − J/ψ and 1.0 fb −1 of pp collisions collected during Run 1 [50].…”

Section: Multiquarksmentioning

confidence: 99%

Search for Dark Matters at Accelerators

Auriemma¹

2017

Proceedings of Frontier Research in Astrophysics – II — PoS(FRAPWS2016)

View full text Add to dashboard Cite

This talk is a short review of part of the searches of new particles of possible interest for Astrophysics and Cosmology with the different detectors that has been in operation for physics since the year 2010. A consistent fraction of the efforts of the LHC experiment has been devoted to the search for particle and processes not predicted by the Standard Model that could give some input to the understanding of the nature of the dark matter, but with only limited success until now, specially in the search for evidences in favor of the supersymmetry, that are supposed to be able to explain the large WIMP's abundance observed in the Universe. In the paper are discussed the present status of the searches for WIMPs and rare decays after the Run 1 of LHC, in comparison with the direct and indirect searches for the cosmological relic dark matter, but also the discovery of exotic heavy hadronic states (tetra and pentaquarks), that were hypothesized in QCD many years ago, whose existence appears now convincingly proved.

show abstract

The hypernuclear physics heritage of Dick Dalitz (1925–2006)

Gal

Proceedings of the IX International Conference on Hypernuclear and Strange Particle Physics

View full text Add to dashboard Cite

show abstract

Study of the production of a strange (S = −1) dibaryon in the interactions of K− and π+ on deuterium below 1.5GeV/c

Cited by 40 publications

References 11 publications

Study of the Λp interaction close to the and thresholds

Study of the Λp interaction close to the and thresholds

Search for Dark Matters at Accelerators

The hypernuclear physics heritage of Dick Dalitz (1925–2006)

Contact Info

Product

Resources

About