HEPData Search

The first measurements of the invariant differential cross sections of inclusive $\pi^0$ and $\eta$ meson production at mid-rapidity in proton-proton collisions at $\sqrt{s}=0.9$ TeV and $\sqrt{s}=7$ TeV are reported. The $\pi^0$ measurement covers the ranges $0.4<p_T<7$ GeV/$c$ and $0.3<p_T<25$ GeV/$c$ for these two energies, respectively. The production of $\eta$ mesons was measured at $\sqrt{s}=7$ TeV in the range $0.4<p_T<15$ GeV/$c$. Next-to-Leading Order perturbative QCD calculations, which are consistent with the $\pi^0$ spectrum at $\sqrt{s}=0.9$ TeV, overestimate those of $\pi^0$ and $\eta$ mesons at $\sqrt{s}=7$ TeV, but agree with the measured $\eta/\pi^0$ ratio at $\sqrt{s}=7$ TeV.

4 data tables

Table 1

The measured invariant differential section for inclusive PI0 production at a centre-of-mass energy of 7 TeV.

Table 2

The measured invariant differential section for inclusive PI0 production at a centre-of-mass energy of 0.9 TeV.

Table 3

The measured invariant differential section for inclusive ETA production at a centre-of-mass energy of 7 TeV.

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Inclusive production of eta mesons in pi p, K p and gamma p collisions at energies around 100-GeV.

The Omega Photon collaboration Apsimon, R.J. ; Atkinson, M. ; Baake, M. ; et al.

Z.Phys.C 54 (1992) 185-191, 1992.

Inspire Record 339919 DOI 10.17182/hepdata.14710

Measurements are reported of inclusive production of η-mesons in the beam fragmentation region in γp, πp andKp collisions. Results include a small but significant departure from VMD, and a pronounced rise in theη/π0 ratio with increasingpT.

21 data tables

Table 1

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Inclusive production of $\pi^0$ mesons in $\pi$p, Kp and $\gamma$p collisions at energies around 100-GeV.

The Omega Photon collaboration Apsimon, R.J. ; Atkinson, M. ; Baake, M. ; et al.

Z.Phys.C 52 (1991) 397-405, 1991.

Inspire Record 325149 DOI 10.17182/hepdata.14858

Measurements are reported of inclusive production of π0-mesons in the beam fragmentation region in γp, πp andKp collisions. Results include the ratio of π0 production inKp and πp collisions, showing reduced production from fragmentation of theK-meson, and the ratio of π0 production in photon and hadron collisions which shows agreement with modified Vector Meson Dominance at lowPT, and departures at higherPT signalling the onset of direct photon reactions. The pattern of departure from Feynman scaling at highPT points to a contribution of hard parton-parton collisions in both γp and πp collisions.

28 data tables

Table 1

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THE CROSS-SECTIONS OF pi+ AND pi- PRODUCTION AT AN ANGLE 159-degrees l.s. IN PROTON - NUCLEAR INTERACTIONS AT THE ENERGY OF THE INCIDENT PROTONS FROM 15-GeV TO 65-GeV

Belyaev, I.M. ; Gavrishchuk, O.P. ; Zolin, L.S. ; et al.

JINR-P1-89-112, 1989.

Inspire Record 280131 DOI 10.17182/hepdata.9421

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240 data tables

Table 1

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Inclusive $K^$+ (890), $K^$+ (1430) and $\bar{K}^*$ (890) Production in $K^+ p$ Interactions at 32-{GeV}/$c$

Azhinenko, I.V. ; Belokopytov, Yu.A. ; Borovikov, A.A. ; et al.

Z.Phys.C 25 (1984) 103, 1984.

Inspire Record 195755 DOI 10.17182/hepdata.47703

We present final results on inclusive production ofK*+(890),K*+(1430) andK*−(890) in$\bar K^ +p$ interactions at 32 GeV/c, based on a statistics of ∼27 events/μb. Total cross sections,pT-andx-dependence of inclusive distributions are compared with experiments at other energies and with the Lund fragmentation model. Spin density matrix elements of theK*+(890) are also discussed. The results suggest that “recombination” of both initial state valence quarks$\bar s$ andu of theK+ intoK*+(890), responsible in the Lund model for ∼45% of theK*+(890) cross section, is strongly suppressed.

4 data tables

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PROTON PRODUCTION AT 110-degree ANGLE FROM C-12, O-16, Cu, Pb IN INCLUSIVE REACTIONS pi- A ---> p X AT 1.5-GeV/c pi- MESON MOMENTA

Measurement of Proton Spectra Emitted at an Angle of 162-Degrees in the Reaction pi- a --> p Anything at pi- Energies of 1.5-GeV to 6.0-GeV

Spectra of Deuterons and Tritium at 162-Degrees from Bombardment of C, Cu and Pb Nuclei by pi- Mesons at 1.5-GeV to 6.0-GeV

PRODUCTION OF pi+ MESONS AT 118-degree ANGLE IN THE INCLUSIVE REACTION pi- A ---> pi+ X AT 1.5-GeV/c INCIDENT PION MOMENTA

DEUTERON PRODUCTION AT 100-degree ANGLE FROM C-12, O-16, Cu, Pb NUCLEI IN INCLUSIVE REACTIONS pi- A ---> d X AT pi- MESON MOMENTA OF 1.5-GeV/c

rivet Analysis
Neutral pion and $\eta$ meson production in proton-proton collisions at $\sqrt{s}=0.9$ TeV and $\sqrt{s}=7$ TeV

Inclusive production of eta mesons in pi p, K p and gamma p collisions at energies around 100-GeV.

Inclusive production of $\pi^0$ mesons in $\pi$p, Kp and $\gamma$p collisions at energies around 100-GeV.

THE CROSS-SECTIONS OF pi+ AND pi- PRODUCTION AT AN ANGLE 159-degrees l.s. IN PROTON - NUCLEAR INTERACTIONS AT THE ENERGY OF THE INCIDENT PROTONS FROM 15-GeV TO 65-GeV

Inclusive $K^$+ (890), $K^$+ (1430) and $\bar{K}^*$ (890) Production in $K^+ p$ Interactions at 32-{GeV}/$c$