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Hadron production in diffractive deep-inelastic scattering.

The H1 collaboration Adloff, C. ; Aid, S. ; Anderson, M. ; et al.

Phys.Lett.B 428 (1998) 206-220, 1998.

Inspire Record 468748 DOI 10.17182/hepdata.44324

Characteristics of hadron production in diffractive deep-inelastic positron-proton scattering are studied using data collected in 1994 by the H1 experiment at HERA. The following distributions are measured in the centre-of-mass frame of the photon dissociation system: the hadronic energy flow, the Feynman-x (x_F) variable for charged particles, the squared transverse momentum of charged particles (p_T^{*2}), and the mean p_T^{*2} as a function of x_F. These distributions are compared with results in the gamma^* p centre-of-mass frame from inclusive deep-inelastic scattering in the fixed-target experiment EMC, and also with the predictions of several Monte Carlo calculations. The data are consistent with a picture in which the partonic structure of the diffractive exchange is dominated at low Q^2 by hard gluons.

6 data tables

Table 1

Energy flow distributions in the gamma*-pomeron CM frame.. Positive etarap corresponds to the direction of the incoming photon.

Table 2

Energy flow distributions in the gamma*-pomeron CM frame.. Positive etarap corresponds to the direction of the incoming photon.

Table 3

Energy flow distributions in the gamma*-pomeron CM frame.. Positive etarap corresponds to the direction of the incoming photon.

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Study of Neutral Strange Particle Production in $p p$ Interactions at 32-{GeV}/$c$ and Comparison With $\bar{p} p$ Data

Bogolyubsky, M.Yu. ; Bumazhnov, V.A. ; Kiryunin, A.E. ; et al.

Sov.J.Nucl.Phys. 50 (1989) 424, 1989.

Inspire Record 269294 DOI 10.17182/hepdata.10310

None

15 data tables

Table 1

No description provided.

Table 2

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Table 3

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Neutral Strange Particle Production in $K^+ p$ Interactions

The CERN-Soviet collaboration Ajinenko, I.V. ; Chliapnikov, P.V. ; Falaleev, V.P. ; et al.

Z.Phys.C 23 (1984) 307, 1984.

Inspire Record 193424 DOI 10.17182/hepdata.10722

The production properties ofKs0,$\bar \Lambda$ andK+p interactions at 32 GeV/c are investigated using the final statistics of the experiment. We present total and semi-inclusive cross sections and aver-age multiplicities. Estimates are given of the diffractive dissociation contributions to total and differential cross sections. Thex-,pT−, and transverse mass dependence of inclusive and semi-inclusive distributions is discussed as well as properties of “prompt”Ks0's. The ratio of “prompt”K890+ (K8900) to “prompt”K0 cross sections is measured to be 1.03±0.12 (0.98±0.17). From a comparison of$\bar \Lambda$ production inK±p interactions at 32 GeV/c, we estimate a strange sea-quark suppression of 0.26 ±0.02. The double differential cross sections ofKs0's is studied as a function of Feynman-x andpT2, and a Triple-Regge fit performed. The data are compared in detail to versions of the Lund-model for low-pT hadronic collisions.

27 data tables

Table 1

No description provided.

Table 2

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Table 3

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Study of Inclusive Production of $\pi^\pm$ and Protons in $\bar{p} p$ Interactions at 32-{GeV}/$c$

The French-Soviet & CERN-Soviet collaborations Vlasov, E.V. ; Babintsev, V.V. ; Bumazhnov, V.A. ; et al.

Z.Phys.C 13 (1982) 95, 1982.

Inspire Record 176790 DOI 10.17182/hepdata.1191

Results are presented on the inclusive production of π± mesons and protons in$\bar p$p interactions at an incident antiproton momentum of 32 GeV/c in the MIRABELLE bubble chamber, based on a sample of 55,000 inelastic events. The spectra of π+(π−) andp($\bar p$) are separated in the whole kinematically admitted region of phase space by a statistical method. The semi-inclusive and inclusive cross sections and the main average characteristics of π andp production are calculated. The invariant differential cross sections are studied as functions of the Fevnman scaling variablex, the rapidity and the transverse momentum. Thex distribution of π± mesons in the proton fragmentation region does not show any significant contribution from quark exchange or annihilation processes. A possible contribution of hard quark scattering on mesons or baryons is observed for large transverse momenta.

38 data tables

Table 1

No description provided.

Table 2

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Table 3

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Inclusive $K^$+ (892) and $K^$ (892) Production in $K^+ p$ Interactions at 32-{GeV}/c

The French-Soviet & CERN-Soviet collaborations Azhinenko, I.V. ; Bryzgalov, V.V. ; Gerdyukov, L.N. ; et al.

Z.Phys.C 5 (1980) 177, 1980.

Inspire Record 153557 DOI 10.17182/hepdata.71085

Total and semi-inclusive cross sections, longitudinal and transverse momentum distributions and spin density matrix elements of theK*+(892) andK*0(892) produced in the inclusive reactionsK+p→K*+(892)+X andK+p→K*0(892)+X at 32 GeV/c are studied in detail. The inclusive spectra of theK*(892) and their decay products are compared with pion and neutral kaon production. TheK*+(892) andK*+(892) are dominantly produced by kaon fragmentation processes. The dependence of average transverse momentum <pT> vs.x for resonances has been investigated for the first time.

55 data tables

Table 1

No description provided.

Table 2

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Inclusive Production of Anti-xi+ and $\Xi^-$ in $K^+ p$ Interactions at 32-{GeV}/c

Azhinenko, I.V. ; Belokopytov, Yu.A. ; Chliapnikov, P.V. ; et al.

Nucl.Phys.B 176 (1980) 51, 1980.

Inspire Record 153556 DOI 10.17182/hepdata.11096

The inclusive production of Ξ + and Ξ − hyperons is investigated in K + p interactions at 32 GeV/ c . The production cross sections, 36.4±9 μ b for the Ξ + and 6.5±3 μ b for the Ξ − , are rising strongly with energy similarly to Λ and Λ production in K + p interactions. The Ξ + are produced preferentially in the forward direction in the c.m.s., while the Ξ − are produced dominantly backwards. The average transverse momenta 〈p T 〉 Ξ + =0.73±0.09 GeV /c and 〈 p T 〉 Ξ − =0.58±0.09 GeV/ c .

22 data tables

Table 1

No description provided.

Table 2

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Table 3

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Inclusive Production of Pions and $\rho^0$ in $\pi^+ p$ Interactions at 32-{GeV}/$c$

Azhinenko, I.V. ; Belokopytov, Yu.A. ; Chliapnikov, P.V. ; et al.

Sov.J.Nucl.Phys. 31 (1980) 628, 1980.

Inspire Record 143792 DOI 10.17182/hepdata.2720

None

48 data tables

Table 1

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Table 2

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Table 3

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Hadron production in diffractive deep-inelastic scattering.

Study of Neutral Strange Particle Production in $p p$ Interactions at 32-{GeV}/$c$ and Comparison With $\bar{p} p$ Data

Neutral Strange Particle Production in $K^+ p$ Interactions

Study of Inclusive Production of $\pi^\pm$ and Protons in $\bar{p} p$ Interactions at 32-{GeV}/$c$

Inclusive $K^$+ (892) and $K^$ (892) Production in $K^+ p$ Interactions at 32-{GeV}/c

Inclusive Production of Anti-xi+ and $\Xi^-$ in $K^+ p$ Interactions at 32-{GeV}/c

Inclusive Production of Pions and $\rho^0$ in $\pi^+ p$ Interactions at 32-{GeV}/$c$

Date

Collaboration

Subject_areas

Phrases Reset

Reactions

Observables Reset

CM Energies (GeV)

Authors Reset

Hadron production in diffractive deep-inelastic scattering.

Study of Neutral Strange Particle Production in $p p$ Interactions at 32-{GeV}/$c$ and Comparison With $\bar{p} p$ Data

Neutral Strange Particle Production in $K^+ p$ Interactions

Study of Inclusive Production of $\pi^\pm$ and Protons in $\bar{p} p$ Interactions at 32-{GeV}/$c$

Inclusive $K^*$+ (892) and $K^*$ (892) Production in $K^+ p$ Interactions at 32-{GeV}/c

Inclusive Production of Anti-xi+ and $\Xi^-$ in $K^+ p$ Interactions at 32-{GeV}/c

Inclusive Production of Pions and $\rho^0$ in $\pi^+ p$ Interactions at 32-{GeV}/$c$

Inclusive $K^$+ (892) and $K^$ (892) Production in $K^+ p$ Interactions at 32-{GeV}/c