Freudenreich, K.
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Measurement of the polarization in k- p ---> anti-k0 n charge exchange at 8 gev/c

Beusch, W. ; Borghini, M. ; Misuri, G. ; et al.
Phys.Lett.B 46 (1973) 477-480, 1973.
Inspire Record 95156 DOI 10.17182/hepdata.28055

The K − p → K 0 n polarization has been measured at 8 GeV/ c and for − t values ranging from 0 up tp 1.2 (GeV/ c ) 2 . A negative polarization has been found.

1 data table match query
Table 1

No description provided.


A Partial Wave Analysis of the ($\bar{K}0 \pi^+ \pi^-$) System Produced in $K^- p \to \bar{K}0 \pi^+ \pi^- n$ at 10-{GeV}/$c$

Konigs, E. ; Otter, G. ; Ransone, G. ; et al.
Phys.Lett.B 74 (1978) 282-286, 1978.
Inspire Record 6169 DOI 10.17182/hepdata.27445

A partial wave analysis of the non-diffractively produced ( K ̄ 0 π + π - system has been performed. The system was produced in the reaction K - p→ K ̄ 0 π + π - n at 10 GeV/ c , measured in the CERN Omega spectrometer. Besides the well-known K ∗ (1420) resonance, we find good evidence for the production of Q 2 (1400) and some indication for Q 1 (1290) production in J P =1 + . In addition we clearly observe a bump in the 1800 MeV region, the properties of which are discussed.

3 data tables match query
Table 1

BR(<K RHO>/<K* PI>) FOUND TO BE 0.21 +- 0.08 AND 0.9 +- 0.3 FOR K*(1420) AND K*(1780) RESPECTIVELY.

Table 2

DENSITY MATRIX FOR JP=2+ IN THE REGION 1.3 < M(K PI PI) < 1.55 GEV.

Table 3

DENSITY MATRIX FOR JP=3- IN THE REGION 1.6 < M(K PI PI) < 1.9 GEV.


Nuclear Effects on the Nucleon Structure Functions in Hadronic High Mass Dimuon Production

The NA10 collaboration Bordalo, P. ; Busson, P. ; Kluberg, L. ; et al.
Phys.Lett.B 193 (1987) 368, 1987.
Inspire Record 245533 DOI 10.17182/hepdata.30122

We compare the differential cross sections of high-mass muon pair production on deuterium and tungsten by incident negative pions of 140 and 286 GeV. We find an indication of a nuclear effect on the nucleon quark distributions comparable in magnitude to what is observed in muon-iron deep inelastic scattering, whereas the pion-quark distribution is unaffected, compatibly with QCD factorization.

4 data tables match query
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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A High Statistics Study of Upsilon Meson Production in $\pi^- W$ Reactions at 286-{GeV}/$c$

The NA10 collaboration Grossmann-Handschin, M. ; Guanziroli, M. ; Le Coultre, P. ; et al.
Phys.Lett.B 179 (1986) 170, 1986.
Inspire Record 230301 DOI 10.17182/hepdata.30229

With a sample of about 2000( γ + γ ′+ γ ″) events observed in π-W interactions at 286GeV/ c , the ratio ( γ ′+ γ ″)/ γ =0.51±0.07, the branching ratio times the inclusive total cross section Bσ =(386±17±85) pb per W nucleus, as well as the differential cross sections in χ F and p T have been measured. These results are compared with previous data obtained with the same apparatus at a lower beam momentum (194 GeV/ c ). Both data sets are compared with a theoretical calculation (“duality model”) which also allows one to extract the shape parameter β g of the gluon distribution in the pion. β g is found to be 2.3 −0.3 +0.4 (stat.) −0.5 +0.1 (syst.).

1 data table match query
Table 1

No description provided.


The charge exchange anti-p p ---> anti-n n at 5.0 and 7.76 gev/c near the forward direction

Lee, J.G. ; Harckham, A. ; Letheren, M. ; et al.
Nucl.Phys.B 52 (1973) 292-300, 1973.
Inspire Record 84235 DOI 10.17182/hepdata.32683

The differential cross section for the charge exchange p p → n n has been measured with high statistics at 7.76 GeV/ c and at 5.0 GeV/ c . The 7.76 GeV/ c data show a very narrow [ Δt ⪅ 0.01 (GeV/ c ) 2 ] forward peak superposed on a slow exponential fall-off.

3 data tables match query
Table 1

No description provided.

Table 2

No description provided.

Table 3

INTEGRATED CROSS SECTIONS FROM EXPONENTIAL FIT.


Upper Limits for $B \bar{B}$ Production in $\pi^-$ Tungsten Interactions at 194-{GeV}/$c$

The NA10 collaboration Ereditato, A. ; Gorini, E. ; Strolin, Paolo Emilio ; et al.
Phys.Lett.B 157 (1985) 463-468, 1985.
Inspire Record 213161 DOI 10.17182/hepdata.30393

We present a study of events with three muons in the final state, produced in π − -tungsten interactions at 194 GeV/ c . Trimuons can be attributed to B-meson pair production, and this allows us to set (model-dependent) upper limits for the corresponding cross section. Assuming a correlated central production model, we obtain the limit of 1.5 nb per nucleon at the 95% confidence level.

1 data table match query
Table 1

No description provided.


Measurement of the Differential Cross-Section and the Spin-Correlation Parameters P,A, and R in the Backward Peak of pi- p --> K0 Lambda at 5-GeV/c

Astbury, P. ; Gallivan, J. ; Jafar, J. ; et al.
Nucl.Phys.B 99 (1975) 30-52, 1975.
Inspire Record 98667 DOI 10.17182/hepdata.31861

We present measurements for the baryon-exchange reaction π − p→ Λ K 0 at 5 GeV/ c over the range − u <2(GeV/ c ) 2 . The differential cross section is obtained from events produced on a liquid hydrogen target. These data are combined with events produced on a butanol polarized target and the parameters P , A , and R are then determined from an analysis of the decay angular distribution of the forward-going Λ. From our data it is possible to determine the magnitudes and the relative phase of the two invariant amplitudes A ′ and B . The consequences for the ratio B / A ′ are discussed in detail.

4 data tables match query
Table 1

No description provided.

Table 2

THE ERRORS QUOTED IN D(SIG)/DU DO NOT INCLUDE THE ERROR ASSIGNED TO THE OVERALL U-INDEPENDENT CORRECTIONS FACTOR (4.62 +- 0.36), OR OTHER POSSIBLE NORMALIZATION ERRORS.

Table 3

No description provided.

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A-dependence of Muon Pair Production in $\pi^-$ Nucleus Interactions at 280-{GeV}/$c$

Falciano, S. ; Freudenreich, K. ; Juillot, P. ; et al.
Phys.Lett.B 104 (1981) 416-420, 1981.
Inspire Record 166161 DOI 10.17182/hepdata.31061

We have measured the relative cross sections for muon pair production by 280 GeV/ c negative pions on three different targets: carbon, copper, and tungsten. The value of α obtained from the parametrization σ = constant × A α is 0.94 ± 0.02 ± 0.02, whereas the parametrization σ≈σ 0 ( Z A ) A α′ , where σ 0 ( Z A ) is given by the Drell-Yan model, leads to α ′ = 0.97 ±0.02±0.02. This last result is in agreement with the quark additivity rule which is inherent in the Drell-Yan model, no dependence is observed on the transverse momentum of the muon pair.

2 data tables match query
Table 1

PARAMETRISATION OF CROSS-SECTION IS SIG=CONST.*A**POWER.

Table 2

PARAMETRISATION OF CROSS-SECTION IS SIG=SIG0(Z/A)*A**POWER WHERE SIG0(Z/A) IS GIVEN BY DRELL-YAN MODEL.


Open Beauty Production in High-energy $\pi^-$ - Tungsten Interactions

The NA10 collaboration Bordalo, P. ; Busson, P. ; Kluberg, L. ; et al.
Z.Phys.C 39 (1988) 7, 1988.
Inspire Record 260719 DOI 10.17182/hepdata.15616

We present a study of\(B\bar B\) meson pair production inπ− interactions at 140, 194 and 286 GeV incident pion energy. At 286 GeV, where we have the best statistics, we find a model-dependent\(B\bar B\) production cross-section\(\sigma _{BB}= 14_{ - 6}^{ + 7} nb/nucleon\).

1 data table match query
Table 1

No description provided.


Coherent $K$(s) Regeneration on Protons From 30-{GeV}/$c$ to 130-{GeV}/$c$

Bock, G.J. ; Aronson, S.H. ; Freudenreich, K. ; et al.
Phys.Rev.Lett. 42 (1979) 350, 1979.
Inspire Record 7461 DOI 10.17182/hepdata.20779

Precise measurements att=0 of the KLp→KSp amplitude (modulus and phase) were made. Over 50000 Kπ2 decays along with normalizing Kμ3 events were detected behind a 7.2-m-long liquid-hydrogen regenerator. The momentum dependence of the modulus and phase are presented, and the results are combined with those of other experiments to extract the relevant parameters of ω exchange.

2 data tables match query
Table 1

RESULTS USING ETA+- = 2.15E-3.

Table 2

RESULTS USING ETA+- = 2.27E-3.