Date

Measurement of the spin-density matrix elements in exclusive electroproduction of rho0 mesons at HERA.

The ZEUS collaboration Breitweg, J. ; Chekanov, S. ; Derrick, M. ; et al.
Eur.Phys.J.C 12 (2000) 393-410, 2000.
Inspire Record 505172 DOI 10.17182/hepdata.24209

Exclusive electroproduction of rho^0 mesons has been measured using the ZEUS detector at HERA in two Q^2 ranges, 0.25

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The spin-density matrix elements obtained from the BPC low Q**2 data set.

The spin-density matrix elements obtained from the DIS high Q**2 data set.

The spin-density matrix elements obtained from the low Q**2 BPC data set in two W intervals.

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Study of a $K^0_S K^0_S$ Plus Threshold Enhancement Observed in the Final States $\bar{p} p \to K^0_S K^0_S$ Pions at 700-{MeV}/$c$ to 760-{MeV}/$c$

Aguilar-Benitez, M. ; Cerrada, M. ; Gonzalez-Arroyo, Antonio ; et al.
Nucl.Phys.B 140 (1978) 73-108, 1978.
Inspire Record 130239 DOI 10.17182/hepdata.25444

An analysis of the K 0 K 0 system at threshold produced in the final states p p → K S 0 K S 0 ( n π) at 700–760 MeV/ c , is presented. A simultaneous fit to the ππ phase shifts and inelasticities and to the K S 0 K S 0 effective-mass distributions using parametrizations which take into account the analytical and unitarity properties of the I = 0 S-wave amplitudes is performed. The behaviour of the eigenphases and the unphysical Riemann sheet structure for different solutions is studied.

3 data tables match query

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FIT TO RESONANCE PRODUCTION CHANNELS IN <KS KS PI+ PI-> FINAL STATE.

FIT TO RESONANCE PRODUCTION CHANNELS IN <KS KS PI0> FINAL STATE.


The $K^0 / \pi^-$ Ratio and Strangeness Suppression in Neutrino $p$ and Anti-neutrino $p$ Charged Current Interactions

The Birmingham-Bonn-CERN-London-Munich-Oxford collaboration Jones, G.T. ; Kennedy, B.W. ; O'Neale, S.W. ; et al.
Z.Phys.C 27 (1985) 43, 1985.
Inspire Record 205778 DOI 10.17182/hepdata.16066

Neutral kaon to negative pion production ratios fromvp and\(\bar vp\) charged current interactions in BEBC are presented and compared with LUND fragmentation model predictions. Good agreement is obtained with a strangeness suppression factor λ=0.203±0.014(stat)±0.010(sys). No evidence is seen for an energy dependence of λ in our kinematic region.

2 data tables match query

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Study of Transverse Momenta of Charged Hadrons Produced in Neutrino $p$ and Anti-neutrino $p$ Charged Current Interactions

The Birmingham-CERN-London-Munich-Oxford collaboration Jones, G.T. ; Kennedy, B.W. ; Middleton, R.P. ; et al.
Z.Phys.C 25 (1984) 121, 1984.
Inspire Record 201590 DOI 10.17182/hepdata.16211

Data from a neutrino and antineutrino hydrogen experiment with BEBC are used to investigate transverse properties of the produced charged hadrons. Measurements are presented on average transverse momenta of charged pions as functions of Feynman-x and the hadronic mass, on the transverse momentum flow within an event and on jet-related quantities. The main features of the data are well described by the LUND model. The data favour a version of the model in which soft gluon effects are included and the primordial transverse momentum of the quarks in the proton is small. Effects from 1st order QCD (hard gluon emission) are negligible.

6 data tables match query

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MEASUREMENTS OF THE STRUCTURE FUNCTIONS F2 (x, Q**2) FROM neutrino p AND ANTI-NEUTRINO p INTERACTIONS

The WA21 collaboration Grassler, H. ; Lanske, D. ; Schulte, R. ; et al.
OXFORD NP-79/84, 1984.
Inspire Record 15788 DOI 10.17182/hepdata.1180

None

2 data tables match query

NORMALISATION UNCERTAINTY IS 7 PCT.

NORMALISATION UNCERTAINTY IS 7 PCT.


Inclusive $\rho^0$ and F Production in $p p$ Interactions at 405-{GeV}/$c$

Suzuki, A. ; Kichimi, H. ; Cooper-Sarkar, Amanda M. ; et al.
Lett.Nuovo Cim. 24 (1979) 449, 1979.
Inspire Record 140494 DOI 10.17182/hepdata.37962

None

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Study of the D (1285) and E(1420) Resonances Produced in anti-p p Annihilations at 700-MeV/c to 760-MeV/c

Nacasch, R. ; Defoix, C. ; Dobrzynski, L. ; et al.
Nucl.Phys.B 135 (1978) 203-223, 1978.
Inspire Record 122850 DOI 10.17182/hepdata.41975

In this paper we have investigated the properties of the D(1285) and E(1420) meson resonances using the five-body annihilation channels p p → K K πππ obtained in a large statistics experiment (28 events/μb). The analysis favours the 1 + spin-parity assignment for the D(1285) meson. The dominant decay mode of the D(1285) into K K π is found to be δ(970)π. The situation concerning the E(1420) meson remains confused although not inconsistent with previous analyses. Partial cross sections on resonance production are also presented.

1 data table match query

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Measurement of the proton structure function F2 in e p scattering at HERA

The ZEUS collaboration Derrick, M. ; Krakauer, D. ; Magill, S. ; et al.
Phys.Lett.B 316 (1993) 412-426, 1993.
Inspire Record 357414 DOI 10.17182/hepdata.28804

This paper presents our first measurement of the F 2 structure function in neutral-current, deep inelastic scattering using the ZEUS detector at HERA, the ep colliding beam facility at DESY. The data correspond to an integrated luminosity of 24.7 nb −1 . Results are presented for data in range of Q 2 from 10 GeV 2 to 4700 GeV 2 and Bjorken x down to 3.0 × 10 −4 . The F 2 structure function increases rapidly as x decreases.

7 data tables match query

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Phi and omega Meson Production in anti-p p Annihilations at 0.7-GeV/c-0.76-GeV/c and the OZI Rule

The BOMBAY-CERN-COLLEGE DE FRANCE-MADRID collaboration Cooper-Sarkar, Amanda M. ; Ganguli, S.N. ; Malhotra, P.K. ; et al.
Nucl.Phys.B 146 (1978) 1-10, 1978.
Inspire Record 137031 DOI 10.17182/hepdata.34858

The production of the φ and ω mesons has been studied in the reactions p p → φ(ω)π + π − and p p → φ(ω) ϱ 0 at 0.70–0.76 GeV /c . The c.m. angular distribution of the φ meson in the reaction p p → φπ + π − is found to be consistent with isotropy. The corresponding distribution for ω is not. the ratio σ( p p → φπ + π − ) σ( p p → ωπ + π − ) is (10 ± 2.4) · 10 −3 , which leads to a value of (19 ± 5) · 10 −3 when corrected for the phase-space factor. Implications of this result for the OZI rule are discussed.

2 data tables match query

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A Study of $K \bar{K}$ Correlations in $\bar{p} p$ Annihilations at 0.76-{GeV}/$c$

The Bombay-CERN-College de France-Madrid collaboration Cooper-Sarkar, Amanda M. ; Ganguli, S.N. ; Malhotra, P.K. ; et al.
Nucl.Phys.B 139 (1978) 45-60, 1978.
Inspire Record 130089 DOI 10.17182/hepdata.35043

The effects of resonance production on correlations in final states containing kaons in p p annihilations at 0.76 GeV c have been in detail. We show that correlation distributions of unlike kaon pairs, K S 0 K ± , can be completerly by resonance production. However, for like kaon pairs, K S ) K S 0 , we require the added effects of second-order interference. Using this interference effect we are able to measure the dimensions of the emission region for kaons in p p annihilations at low energy as R = 0.9 ± 0.2 fm.

1 data table match query

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