HEPData Search

We have carried out an amplitude analysis of the KS0KS0 system produced in the reaction π−p→KS0KS0n at 23 GeV/c, based on about 15 000 events in the low-t region (|t−tmin|<0.1 GeV2). Below 1.6 GeV/c2, our favored solution is very similar to those from previous analyses. For higher masses, we observe the KS0KS0 decay of the h(2040) meson. In addition, the l=0 partial wave contains a new state, strongly coupled to KS0KS0, with parameters M=1.771−0.053+0.077 GeV/c2 and Γ=0.200−0.009+0.156 GeV/c2. Since this state is most probably I=0, we call it the S*′(1770). We find an f′f production ratio of 0.23−0.13+0.14, and branching ratios for f-meson and h(2040)-meson decays into KK¯ of (3.1−1.7+0.7)% and (0.67−0.15+0.41)%, respectively. We find, in a detailed comparison of our results with those from other experiments, that our solution is compatible with all known features of both charged and neutral KK¯ systems.

1 data table

Table 1

No description provided.

Search for $D^*$- Production With a 16-{GeV}/$c \pi^-$ Beam

Chung, S.U. ; Etkin, A. ; Fernow, Richard C. ; et al.

Phys.Rev.Lett. 48 (1982) 785, 1982.

Inspire Record 170568 DOI 10.17182/hepdata.20594

A search for production of D*−'s using the decay chain D0π−, D0→K+π−, was carried out at the Brookhaven National Laboratory multiparticle spectrometer with a 16-GeV/c π− beam and a hydrogen target. At 95% confidence level the upper limits for the product of peripheral production cross section by branching ratio are 2.4 nb for inclusive D*− production and 1.3 nb for the exclusive channel π−p→D*−Λc.

1 data table

Table 1

UPPER LIMIT TO CROSS SECTIONS.

ANALYSIS OF SCALING VIOLATION IN NUCLEON STRUCTURE FUNCTIONS

Ammosov, V.v. ; Gapienko, V.a. ; Gapienko, G.s. ; et al.

JETP Lett. 36 (1982) 367-371, 1982.

Inspire Record 185559 DOI 10.17182/hepdata.39758

None

2 data tables

Table 1

No description provided.

Table 2

No description provided.

MEASUREMENT OF POLARIZATION OF PROTONS IN THE REACTION GAMMA P ---> P PI0 IN A PHOTON LINEARLY POLARIZED BEAM. (IN RUSSIAN)

Avakian, R.O. ; Avakian, E.O. ; Avetisian, A.E. ; et al.

Yad.Fiz. 36 (1982) 393-399, 1982.

Inspire Record 183654 DOI 10.17182/hepdata.17730

None

1 data table

Table 1

Axis error includes +- 0.0/0.0 contribution (?////ERROR IN POLARIZATION OF INITIAL GAMMAS IS NOT GIVEN).

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.

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THE C (ALPHA, X) C-11 CROSS-SECTIONS AT 1.59-GEV AND 4.19-GEV

Geaga, J.V. ; Gazzaly, M.M. ; Igo, G.J. ; et al.

Nucl.Phys.A 386 (1982) 589-598, 1982.

Inspire Record 183652 DOI 10.17182/hepdata.37081

The absolute cross sections for the production of 11 C by 1.59 GeV and 4.19 GeV α-particles incident on natural carbon have been measured to be 46.4 ± 1.3 mb and 42.5 ± 1.1 mb respectively. These results, together with data reported at other energies, indicate that the C(α, X) 11 C cross section becomes approximately constant at a value of about 43 mb for energies above 3 GeV (750 MeV/n). A similar energy dependence is exhibited by the C(p, X) 11 C reaction whose cross section has been measured previously over an extensive energy range. The C(α, X) 11 C cross sections are found to be in good agreement with predictions of a semi-empirical model developed to describe nuclear fragmentation.

1 data table

Table 1

ALL SYSTEMATICAL ERRORS WERE INCLUDED INTO TABULATED ERRORS.

Transverse Momentum Distributions of Hadrons Produced in $\alpha \alpha$ and $\alpha p$ Collisions at the {CERN} Intersecting Storage Rings

The CERN-Heidelberg-Lund collaboration Bell, W. ; Braune, K. ; Claesson, G. ; et al.

Phys.Lett.B 112 (1982) 271-276, 1982.

Inspire Record 176957 DOI 10.17182/hepdata.30920

The inclusive production of charged hadrons has been measured in αα and αp collisions at nucleon-nucleon c.m. energies (√s nn )of 31 and 44 GeV, respectively, for transverse momenta p T up to 5 GeV/ c in the central rapidity ( y ) region. at high p T the yields are consistent with being 4 times and 16 times highere than the ones in pp interactions at y =0, for αp and αα interactions, respectively. However, an enhancement over these factors, as expected from an earlier FNAL experiment, cannot be ruled out.

4 data tables

Table 1

No description provided.

Table 2

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Table 3

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GENERAL CHARACTERISTICS OF ANNIHILATION EXCLUSIVE REACTIONS IN anti-p p INTERACTIONS AT 32-GeV/c

The French-Soviet & CERN-Soviet collaborations Barth, M. ; Bogolyubsky, M.Yu. ; Chekulaev, S.V. ; et al.

Sov.J.Nucl.Phys. 36 (1982) 821, 1982.

Inspire Record 178552 DOI 10.17182/hepdata.41182

None

2 data tables

Table 1

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Table 2

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Correlations Between High Momentum Secondaries in $p p$ Collisions at $\sqrt{s}=44$.7-{GeV} and 62.3-{GeV}

Bobbink, G.J. ; van Driel, M.A. ; Erne, F.C. ; et al.

Nucl.Phys.B 204 (1982) 173-188, 1982.

Inspire Record 177179 DOI 10.17182/hepdata.34080

In pp collisions at √ s = 44.7 and 62.3 GeV, where each proton fragments into at least one low- p T, high- x meson or baryon, no correlations between the particle momenta are found for ππ , π K, KK, and p π pairs. The ππ data show a preference for the formation of electrically neutral ππ systems. The KK data show the influence of strangeness conservation. For pp and pΛ final states, the momentum dependence of the correlation ratio R can be described by the scaling variable z = (1 − x 1 )(1 − x 2 ). Small deviations from factorization are discussed.

13 data tables

Table 1

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VECTOR omega (783) AND rho (770) MESONS PRODUCTION IN ANTI-NEUTRINOS NEUTRAL CURRENT INTERACTIONS

Amplitude Analysis of the K0(s) K0(s) System Produced in the Reaction pi- p ---> K0(s) K0(s) n at 23-GeV/c

Search for $D^*$- Production With a 16-{GeV}/$c \pi^-$ Beam

ANALYSIS OF SCALING VIOLATION IN NUCLEON STRUCTURE FUNCTIONS

MEASUREMENT OF POLARIZATION OF PROTONS IN THE REACTION GAMMA P ---> P PI0 IN A PHOTON LINEARLY POLARIZED BEAM. (IN RUSSIAN)

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

THE C (ALPHA, X) C-11 CROSS-SECTIONS AT 1.59-GEV AND 4.19-GEV

Transverse Momentum Distributions of Hadrons Produced in $\alpha \alpha$ and $\alpha p$ Collisions at the {CERN} Intersecting Storage Rings

GENERAL CHARACTERISTICS OF ANNIHILATION EXCLUSIVE REACTIONS IN anti-p p INTERACTIONS AT 32-GeV/c

Correlations Between High Momentum Secondaries in $p p$ Collisions at $\sqrt{s}=44$.7-{GeV} and 62.3-{GeV}