HEPData Search

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Production of High Mass Muon Pairs in $\pi^-$ Be Collisions at 150-{GeV}/$c$ and 175-{GeV}/$c$

Barate, R. ; Bareyre, P. ; Bonamy, P. ; et al.

Phys.Rev.Lett. 43 (1979) 1541, 1979.

Inspire Record 142156 DOI 10.17182/hepdata.20768

This paper presents production and decay characteristics of 500 high-mass, high-resolution μ+μ− pairs produced in π− Be collisions at 150 and 175 GeV/c. The data do not agree with a simple Drell-Yan production mechanism, but indicate that higher-order quantum-chromodynamic corrections must be included.

2 data tables

Table 1

No description provided.

Table 2

No description provided.

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

The Soviet-CERN collaboration Vorobjev, A.P. ; Gerdyukov, L.N. ; Knyazev, V.V. ; et al.

Nucl.Phys.B 176 (1980) 303, 1980.

Inspire Record 153559 DOI 10.17182/hepdata.48999

Inclusive ϱ 0 and φ production is investigated in K + p interactions at 32 GeV/ c . Total and semi-inclusive ϱ 0 and φ cross sections, longitudinal and transverse momentum distributions, including 〈 P T versus x dependence are presented. No evidence for a sea-gull effect is observed. Comparison with quark models strongly suggests the possibility that a large fraction of the ϱ 0 and vector mesons are produced as fragmentation products of the incident particles. Study of uncorrelated π + π − pairs in the ϱ 0 mass range provides possible indirect evidence for the existence of diquarks in the proton.

39 data tables

Table 1

No description provided.

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Table 3

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Measurement of Dimuon Production at the {ISR}

Antreasyan, D. ; Atwood, W. ; Battiston, R. ; et al.

Phys.Rev.Lett. 45 (1980) 863, 1980.

Inspire Record 153857 DOI 10.17182/hepdata.20656

Prompt dimuon production has been measured. Events with mass up to 25 GeV/c2 are observed, as well as the J and ϒ resonances. Cross sections are given for J and ϒ production. For the continuum, the scaling function F(τ) is measured at very small values of τ=ms covering the range 0.05<τ<0.20.

3 data tables

Table 1

No description provided.

Table 2

HERE UPSILON = ALL USILON FAMILY. ANGULAR DISTBN. IS SEEN TO BE ISOTROPIC.

Table 3

No description provided.

Production of Muon Pairs in the Continuum Region by 39.5-{GeV}/$c \pi^\pm$, $K^\pm$, $p$ and $\bar{p}$ Beams Incident on a Tungsten Target

Corden, M. ; Dowell, J.D. ; Garvey, J. ; et al.

Phys.Lett.B 96 (1980) 417-421, 1980.

Inspire Record 154577 DOI 10.17182/hepdata.27163

Inclusive dimuon production by 39.5 GeV/ c π ± , K ± , p and p¯ is described for masses greater than 2.0 GeV/ c 2 . The π − , π + and (π − − π + ) continuum cross-sections exceed the naive Drell-Yan predictions by a factor ∼2.4. The pion valence structure function has been measured and is consistent with a corresponding measurement at 200 GeV/ c .

1 data table

Table 1

No description provided.

Inclusive Production of $\Delta^{++}$(1232) and $\Sigma^\pm$(1385) in $K^+ p$ Interactions at 32-{GeV}/$c$

The Soviet-CERN collaboration Azhinenko, I.V. ; Barth, M. ; Belokopytov, Yu.A. ; et al.

IFVE-80-129, 1980.

Inspire Record 156508 DOI 10.17182/hepdata.41431

None

9 data tables

Table 1

No description provided.

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GENERAL FEATURES AND CLUSTER - LIKE PROPERTIES OF REACTION K+ p ---> K+ p 2 pi+ 2 pi- AT 32-GeV/c

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

Sov.J.Nucl.Phys. 34 (1981) 584, 1981.

Inspire Record 165495 DOI 10.17182/hepdata.10705

None

58 data tables

Table 1

No description provided.

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Comparison of Strange Anti-baryon and Strange Meson Production in $K^+ p$ Interactions at 32-{GeV}/$c$

Chliapnikov, P.V. ; Gerdyukov, L.N. ; Khromova, G.N. ; et al.

Z.Phys.C 12 (1982) 99, 1982.

Inspire Record 167341 DOI 10.17182/hepdata.10880

New experimental results are presented on inclusive production properties of$\bar \Sigma ^{ *+ } $(1385) and$\bar \Sigma ^{ *+ } $(1385) inK+p interactions at 32 GeV/c. The analysis is based on significantly larger statistics than previously available. A comparison is also made of invariantx-distributions ofK0/$\bar K^0 $,$\bar \Lambda $ and$\bar \Xi ^ +$ and of$\bar \Sigma ^{ *\pm } $(1385) andK*+(892). These spectra exhibit regularities expected from the quark-recombination picture when it is assumed that the strange mesons and antibaryons are produced off the strange$\bar s$-valence-quark in the incidentK+ meson. Transverse momentum distributions are also presented forK*+(892) and$\bar \Sigma ^{ *\pm } $(1385) and found to be very similar. The results on strange antibaryon average multiplicities disagree strongly with a recent version of the additive quark model.

32 data tables

Table 1

No description provided.

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Inclusive $K^{+}$(1430), $K^{0}$(1430) and $F(1270)$ Production in $K^+ p$ Interactions at 32-{GeV}/$c$

Chliapnikov, P.V. ; Falaleev, V.P. ; Gerdyukov, L.N. ; et al.

Z.Phys.C 12 (1982) 113, 1982.

Inspire Record 167340 DOI 10.17182/hepdata.10914

Results are presented on total and semiinclusive cross sections, longitudinal and transverse momentum distributions of the tensor mesonsK*+(1430),K*0(1430), andf(1270) observed inK+p interactions at 32 GeV/c. The data are compared withK*+(892).K*0(896) and ϱ0 vector meson production in the same experiment. The shapes of inclusive invariantx-spectra for the strange vector and tensor mesons are found to be rather similar, after removal of diffractive and quasi-two-body channels, in agreement with quark-recombination ideas.

21 data tables

Table 1

MULT FOR THE TENSOR MESONS CALCULATED AS MULT=SIG(RES)/SIG(N<=8), WHERE SIG(N<=8) IS THE SUM OF TOPOLOGICAL CROSS SECTIONS WITH N <= 8.

Table 2

No description provided.

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rivet Analysis
Dimuon Scaling Comparison at 44-{GeV} and 62-{GeV}

Antreasyan, D. ; Becker, U. ; Bellettini, G. ; et al.

Phys.Rev.Lett. 48 (1982) 302, 1982.

Inspire Record 168182 DOI 10.17182/hepdata.20610

Measurements of pp→μ+μ−+X at s=44 and 62 GeV are compared. The data are taken under identical conditions utilizing clean proton-proton collisions from the CERN intersecting storage rings and confirm scaling to 5%. The observed μ+μ− yield is a factor of 1.6±0.2 larger than estimated from a simple parton model but is consistent with QCD. The pT dependence of the muon pairs agrees well with expectations from QCD.

1 data table

Table 1

No description provided.

DIFFRACTION DISSOCIATION OF ANTI-PROTONS IN anti-p p COLLISIONS AT 22.4-GeV/c

The Dubna-Alma Ata-Yerevan-Helsinki-Moscow-Prague-Tbilisi collaboration Batyunya, B.V. ; Boguslavsky, I.V. ; Gramenitsky, I.M. ; et al.

Sov.J.Nucl.Phys. 37 (1983) 58, 1983.

Inspire Record 178090 DOI 10.17182/hepdata.71073

None

11 data tables

Table 1

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Production of High Mass Muon Pairs in $\pi^-$ Be Collisions at 150-{GeV}/$c$ and 175-{GeV}/$c$

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

Measurement of Dimuon Production at the {ISR}

Production of Muon Pairs in the Continuum Region by 39.5-{GeV}/$c \pi^\pm$, $K^\pm$, $p$ and $\bar{p}$ Beams Incident on a Tungsten Target

Inclusive Production of $\Delta^{++}$(1232) and $\Sigma^\pm$(1385) in $K^+ p$ Interactions at 32-{GeV}/$c$

GENERAL FEATURES AND CLUSTER - LIKE PROPERTIES OF REACTION K+ p ---> K+ p 2 pi+ 2 pi- AT 32-GeV/c

Comparison of Strange Anti-baryon and Strange Meson Production in $K^+ p$ Interactions at 32-{GeV}/$c$

Inclusive $K^{+}$(1430), $K^{0}$(1430) and $F(1270)$ Production in $K^+ p$ Interactions at 32-{GeV}/$c$

rivet Analysis
Dimuon Scaling Comparison at 44-{GeV} and 62-{GeV}

DIFFRACTION DISSOCIATION OF ANTI-PROTONS IN anti-p p COLLISIONS AT 22.4-GeV/c