Strange-Particle Production in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow><mml:mi>p</mml:mi></mml:math>Interactions from<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>1.5</mml:mn><mml:mi> </mml:mi><mml:mi mathvariant="normal">to</mml:mi><mml:mi> </mml:mi><mml:mn>4.2</mml:mn><mml:mi> </mml:mi><mml:mfrac><mml:mrow><mml:mi math

Dahl, O. I.; Hardy, Lyndon M.; Hess, Richard I.; Kirz, Janos; Miller, Donald H.

doi:10.1103/physrev.163.1377

Cited by 127 publications

(59 citation statements)

References 80 publications

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“…The statistics of the carbon target data is about ten times lower than that of CH 2 data. The net contribution from free protons is compatible with the expectation from the cross sections of background reactions measured in [26]. Because half of data at beam momentum of 1.87 GeV/c was taken with the SCIFI target, the contribution from free protons at 1.87 GeV/c is smaller than that at 1.92 GeV/c.…”

Section: Resultssupporting

confidence: 78%

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Search for Θ+ via π−p→K−X reaction near production threshold

Miwa¹,

Ahn²,

Aoki³

et al. 2006

Physics Letters B

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We have searched for Θ + via π − p → K − X reaction using 1.87 and 1.92 GeV/c π − beam at the K2 beam line of the KEK 12 GeV Proton Synchrotron. In the missing mass spectrum at beam momentum of 1.92 GeV/c, a bump has been found at 1530 MeV/c 2 which is consistent with the mass reported by several experiments. The statistical significance of this bump, however, is only 2.5−2.7σ. Therefore we have derived the upper limit of Θ + production cross section via π − p → K − Θ + reaction which is 3.9µb at 90% confidence level assuming that Θ + is produced isotropically in the center of mass system.

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Section: Resultssupporting

confidence: 78%

“…The π − p → K − X reaction near the Θ + production threshold was studied in 1960s using a bubble chamber [26]. The main backgrounds of the (π − , K − ) reaction are φ production, Λ(1520) production and 3-body phase space.…”

Section: Introductionmentioning

confidence: 99%

Search for Θ+ via π−p→K−X reaction near production threshold

Miwa¹,

Ahn²,

Aoki³

et al. 2006

Physics Letters B

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“…[48] no errors in the experimental data are provided, hence we have assumed errors to be the square root of the number of events (statistical errors). We see that the agreement is fair considering the large experimental errors.…”

Section: Resultsmentioning

confidence: 99%

Unitary coupled channel analysis of theΛ(1520)resonance

et al. 2006

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“…Mass and width were determined to be M = 1425 ± 7, Γ = 80 ± 10 MeV, with quantum numbers J P C = 0 −+ . In the charge exchange reaction π − p → nKKπ, using a 1.5 to 4.2 GeV/c pion beam [2], a state was observed with M = 1420 ± 20, Γ = 60 ± 20 MeV and J P C = 1 ++ . Even though the quantum numbers were different, it was still called E-meson.…”

Section: Short History Of the η(1440)mentioning

confidence: 99%

The GLUEBALL CANDIDATE Η(1440) AS Η RADIAL EXCITATION

Klempt

2005

High Energy Physics

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The Particle Data Group decided to split the η(1440) into two states, called η L and η H . The η(1295) and the η H are supposed to be the radial excitations of the η and η ′ , respectively. The η L state cannot be accomodated in a quark model; it cannot be a q q state, however, it might be a glueball. In this contribution it is shown that that the η(1295) does not have the properties which must be expected for a radially excited state. The splitting of the η( 1440) is traced to a node in the wave function of a radial excitation. Hence the two peaks, η L and η H , originate from one resonance which is interpreted here as first radial excitation of the η.

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Strange-Particle Production inπ−pInteractions from1.5 to 4.2

Cited by 127 publications

References 80 publications

Search for Θ+ via π−p→K−X reaction near production threshold

Search for Θ+ via π−p→K−X reaction near production threshold

Unitary coupled channel analysis of theΛ(1520)resonance

The GLUEBALL CANDIDATE Η(1440) AS Η RADIAL EXCITATION

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