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This paper analyzes π−N→π−π−π+N events from Fermilab experiment E-580, using 200-GeV/c particles on a segmented target of plastic scintillator. Starting with 48 657 triggers, data-quality cuts and a cut on missing mass squared of M2<16 GeV2 lead to a final sample of 7205 events. The xF distribution of the 3π system shows almost all events in a sharp peak at xF=1, suggesting the presence of beam diffraction into three pions. The overall t’ distribution is fit to the sum of three exponential terms corresponding to coherent diffraction from carbon nuclei, diffraction from individual nucleons, and background. Cross sections per nucleon and exponential slopes are reported for each of the three components as a function of 3π effective mass. The cross section for diffraction from the nucleons in the target is 0.34±0.04 mb/nucleon. The cross section for coherent diffraction from carbon is 1.08±0.12 mb/nucleus. The exponential slope for diffraction is observed to decrease with increasing 3π effective mass. The fraction of coherent carbon diffraction in the total cross section is observed to decrease with increasing 3π effective mass. In the π−π+ effective-mass spectrum the ρ0(770) and f0(1270) are observed and their cross sections per nucleon are calculated. In the π−π−π+ effective-mass spectrum the A1−/A2− and A3− enhancements are observed and a cross section for the A3− is calculated.

7 data tables match query

Table 1

No description provided.

Table 3

Diffraction from coherent carbon nucleus.

Table 4

Diffraction from individual nucleon.

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Search for diffractive charm production in 800-GeV/c proton - silicon interactions

The Fermilab E653 collaboration Kodama, K. ; Ushida, N. ; Mokhtarani, A. ; et al.

Phys.Lett.B 316 (1993) 188-196, 1993.

Inspire Record 35969 DOI 10.17182/hepdata.28848

A search for charm production in the coherent diffractive dissociation reaction pSi→XSi was carried out for the modes D 0 → K − π + , D 0 → K − π + π + π − , and D + → K − π + π + . No charm signals were observed, and the 90% confidence level upper limit for coherent charm pair production was determined to be 26 μ b per silicon nucleus. The results are interpreted as an upper limit of 0.2% on the amount of intrinsic charm in the proton.

1 data table match query

Table 1

90 pct CL upper limits.

Diffractive Production of $K^0_s K^0_s \pi^+ \pi^- \pi^-$ in $\pi^-N$ Interactions at 200-GeV/c

Chang, C.C. ; Davis, T.C. ; Diamond, R.N. ; et al.

Phys.Rev.D 29 (1984) 1888-1894, 1984.

Inspire Record 194648 DOI 10.17182/hepdata.23730

The diffractive dissociation of a 200-GeV/c π− beam into KS0KS0π+π−π− has been observed. The diffractive KS0KS0π+π−π− cross section is 1.59±0.78 μb. The ratio of the diffractive KS0KS0π+π−π− cross section to the diffractive KS0KS0π− cross section is 0.40±0.13, which is in good agreement with a diffractive-fragmentation-model prediction of 0.36. There is evidence for simultaneous production of K*− and K*+ in the diffractive KS0KS0π+π−π− sample. The K*+−KS0π−+ mass distribution shows an enhancement near 1.95 GeV.

3 data tables match query

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

Resonance Production in Diffractive $\pi^- N \to K^0_s K^0_s \pi^- N^{\prime}$ at 200-GeV/c

Chen, T.Y. ; Jenkins, E.W. ; Johnson, K.J. ; et al.

Phys.Rev.D 28 (1983) 2304, 1983.

Inspire Record 182627 DOI 10.17182/hepdata.23787

The reaction π−N→KS0KS0π−N′ at 200 GeV/c has been observed with a sensitivity of 450±150 events/μb. The KS0KS0π− system exhibits substantial K*−(890)K0 production. Also produced are f0(1270)π−, f′(1515)π−, and K*−(1430)K0 final states. These resonances occur predominantly at threshold. The diffractive KS0KS0π− cross section is 3.4±1.1 μb. An enhancement near the A3−(1680) is observed in the KS0KS0π− invariant-mass distribution.

1 data table match query

Table 1

No description provided.

Measurement of the Q**2 and energy dependence of diffractive interactions at HERA.

The ZEUS collaboration Chekanov, S. ; Krakauer, D. ; Magill, S. ; et al.

Eur.Phys.J.C 25 (2002) 169-187, 2002.

Inspire Record 584714 DOI 10.17182/hepdata.46612

Diffractive dissociation of virtual photons, gamma* p-->Xp, has been studied in ep interactions with the ZEUS detector at HERA using an integrated luminosity of approx. 10 pb^-1. The data cover photon virtualities 0.17 < Q^2< 0.70 GeV^2 and 3 < Q^2< 80 GeV^2 with 3<M_X<38 GeV, where M_X is the mass of the hadronic final state.

9 data tables match query

Table 1

The double differential cross section d2sig/dmx/dt measured with the LPS method for the Q**2 range 0.17 to 0.70 GeV**2.

Table 2

The double differential cross section d2sig/dmx/dt measured with the LPS method for the Q**2 range 3 to 9 GeV**2.

Table 3

The double differential cross section d2sig/dmx/dt measured with the LPS method for the Q**2 range 9 to 80 GeV**2.

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STUDY OF DIFFRACTIVE PROCESSES IN EXCLUSIVE CHANNEL anti-p p ---> anti-p p (2 pi+) (2 pi-) AT 32-GeV/c

ON STUDY OF PION MULTIPLE PRODUCTION IN NONDIFFRACTIVE EXCLUSIVE REACTIONS IN K- p INTERACTIONS AT 32.1-GeV/c

CROSS-SECTION OF PARTICLE DIFFRACTIVE PRODUCTION IN ANTI-P P INTERACTIONS AT 32-GEV/C. (IN RUSSIAN)

STUDY OF ELASTIC anti-p p SCATTERING AT 32-GeV/c

A Study of the Structure of the Events With the Multiparticle Diffraction Dissociation in $K^- p$ Exclusive Reactions at 32-{GeV}/$c$

DIFFRACTIVE PRODUCTION OF pi- pi- pi+ IN 200-GeV/c pi- N INTERACTIONS

Search for diffractive charm production in 800-GeV/c proton - silicon interactions

Diffractive Production of $K^0_s K^0_s \pi^+ \pi^- \pi^-$ in $\pi^-N$ Interactions at 200-GeV/c

Resonance Production in Diffractive $\pi^- N \to K^0_s K^0_s \pi^- N^{\prime}$ at 200-GeV/c

Measurement of the Q**2 and energy dependence of diffractive interactions at HERA.