A study of k pi pi states produced in 10 gev/c k+ p interactions

Barnham, K.W.J. ; Colley, D.C. ; Dodd, W.P. ; et al.
Nucl.Phys.B 25 (1970) 49-74, 1971.
Inspire Record 68842 DOI 10.17182/hepdata.33832

We present an analysis of the K ππ system produced in 10 GeV/ c K + p interactions. We show that the low-mass enchancement between 1.2 and 1.4 GeV/ c 2 on the K ππ mass spectrum is predominantly 1 + throughout, give the relative amplitudes for the decay of this system into K ∗ (890) π and K ρ , and offer new evidence for the presence of two 1 + resonances in this mass region.

2 data tables

No description provided.

DIFFERENTIAL CROSS SECTION FOR THREE MASS BANDS IN Q-REGION. NORMALIZATION UNCERTAIN - NO UNITS FOR D(SIG)/DT GIVEN ON FIGURE. NUMERICAL VALUES TAKEN FROM THE COMPILATION LST7V2 FOX 72B. ERRORS ADDED AS 1/SQRT(EVENTS).


A study of the k0 pi+ p final state produced in k+ p interactions at 10 gev/c

Barnham, K.W.J. ; Colley, D.C. ; Jobes, M. ; et al.
Nucl.Phys.B 28 (1971) 171-183, 1971.
Inspire Record 68704 DOI 10.17182/hepdata.32749

We present the results of a study of 1173 uniquely identified events of the K 0 π + p final state produced in 10 GeV/ c K + p interactions. This final state is dominated by the quasi two-body processes K + p → K 0 N ∗+ (890 p and K + p → K ∗+ (1420) p . The background is very low and there is little overlapping of resonance bands. We present cross sections, t -distributions and decay angular distributions for the contributing reaction channels. Dips are observed near t = 0 in the differential cross sections for all three processes.

5 data tables

BREIT-WIGNER FIT.

NUMERICAL VALUES TAKEN FROM THE COMPILATION LST7V2 FOX 72B.

No description provided.

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COHERENT REGENERATION IN HYDROGEN FROM 3-GeV/c TO 10-GeV/c

Buchanan, C.D. ; Drickey, Darrell James ; Rudnick, F.D. ; et al.
Phys.Lett.B 37 (1971) 213-216, 1971.
Inspire Record 67654 DOI 10.17182/hepdata.28377

We have studied the proper time distribution of coherent π + π − decays from a 3 – 10 GeV/ c K L o beam incident on a one meter liquid hydrogen target using a wire spark chamber spectrometer in the 3 0 neutral beam at SLAC. We find ∣(ƒ(0) − ƒ (0))/k∣ = 0.43 ± 0.11 mb , φ(ƒ(0) − ƒ (0)) = -101 0 ± 42 0 .

1 data table

No description provided.


A STUDY OF THE STRONG INTERACTION FORM-FACTORS FOR K0(L) ---> pi mu neutrino AND K0(L) ---> pi electron neutrino

Dally, E. ; Innocenti, P. ; Seppi, E. ; et al.
Phys.Lett.B 41 (1972) 647-651, 1972.
Inspire Record 74541 DOI 10.17182/hepdata.28214

We have extracted the strong interaction form factors from K o e3 and K o μ3 data of our previously reported K o L experiment in a manner which does not assume an explicit q 2 = ( p K − p π ) 2 dependence. We present the unparameterized form factors ƒ + (q 2 ) from the K o L → πeν and K o L → πμν modes and ƒ o (q 2 ) and ξ ( q 2 ) from the K o L → πμν data. A comparison of these unparameterized results is made with the results of the Dalitz plot analyses.

1 data table

The conventional form factor f+ is studied.


Measurement of the cross-sections for reaction pi- p ---> x0 n in the momentum range up to 50 gev/c

Bolotov, V.N. ; Isakov, V.V. ; Kachanov, V.A. ; et al.
Phys.Lett.B 48 (1974) 280-284, 1974.
Inspire Record 95354 DOI 10.17182/hepdata.27969

The cross sections for the reaction π − p → X o n, X o → 2 λ are measured at 32.5 and 48 GeV c momenta. The cross spectrometer of γ -quanta is used to select events of reaction, whose cross section is only about 0.05 μbarn. The cross section energy dependence has the power form ( ≈ p −1.11±0.12 . conclusion on U(6) symmetry of quark model is made when comparing the differential cross sections at zero angle for the reactions π − p → X o and π − p → η o . The angle of octet-singlet mixing for pseudo-scalar mesons β = −(20.6 ± 2.2)° is defined.

2 data tables

FROM AVERAGE OF 32.5 AND 48 GEV/C DATA.

No description provided.


Anti-Nucleon Production in Colliding e+ e- Beams at SPEAR

Berk, D. ; Buchanan, C.D. ; Drickey, Darrell James ; et al.
Lett.Nuovo Cim. 9 (1974) 475-478, 1974.
Inspire Record 3185 DOI 10.17182/hepdata.37333

None

1 data table

ONE EVENT SEEN - PROBABLY AN ANTIPROTON.


A Measurement of the Electromagnetic Size of the Pion from Direct Elastic Pion Scattering Data at 50-GeV/c

Adylov, G.T. ; Aliev, F.K. ; Bardin, D.Yu. ; et al.
Nucl.Phys.B 128 (1977) 461-505, 1977.
Inspire Record 126055 DOI 10.17182/hepdata.35248

We report the results of a pion-electron scattering experiment to measure the charge radius of the pion. The experiment was performed in a 50 GeV/ c negative, unseparated beam at the IHEP accelerator, Serpukhov, and has been briefly reported in an earlier publication [1]. A magnetic spectrometer instrumented with wire spark chambers was used to record the incident pion trajectory and the angles and momenta of the scattered particles. Events are reconstructed by detailed trackfinding programs, and a set of kinematic and geometric cuts define the elastic sample. Electrons are identified both by kinematic criteria and pulse height information from total absorption lead glass Čerenkov counters. The final elastic sample consisted of 40 000 πe events in the region of four-momentum transfer squared 0.013 (GeV/ c ) 2 ⩽ q 2 ⩽ 0.036 (GeV/ c ) 2 . A full error matrix fit to the form factors of the pion gave the r.m.s. charge radius of the pion: 〈r π 2 〉 1 2 = (0.78 −0.10 +0.09 ) fm .

23 data tables

Axis error includes +- 0.7/0.7 contribution (DUE TO ACCIDENTAL ANTI-COINCIDENCES).

No description provided.

No description provided.

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Study of K* (1780) in the Reaction K- p --> K- pi+ n at 6-GeV/c

Chung, S.U. ; Etkin, A. ; Flaminio, V. ; et al.
Phys.Rev.Lett. 40 (1978) 355-358, 1978.
Inspire Record 122473 DOI 10.17182/hepdata.20913

We observe a K−π+ state at 1786 ± 8 MeV with a width 95 ± 31 MeV in the reaction K−p→K−π+n at 6 GeV/c, from an experiment carried out at the Brookhaven National Laboratory multiparticle spectrometer.

1 data table

ERROR INCLUDES SYSTEMATIC NORMALIZATION UNCERTAINTY.


Measurement of the Transverse Spin Dependence of the p p Total Cross-Section in the 1-GeV/c-3-GeV/c Region

Biegert, E.K. ; Buchanan, J.A. ; Clement, J.M. ; et al.
Phys.Lett.B 73 (1978) 235-238, 1978.
Inspire Record 134224 DOI 10.17182/hepdata.27471

The pp total cross section difference between pure transverse spin states was measured in the laboratory momentum range 1–3 GeV/ c . Significant differences were found and these differences show striking energy dependence. This structure is in disagreement with the predictions of simple exchange models.

2 data tables

No description provided.

REVISED DATA (J. D. LESIKAR, PRIV COMM, 19 JUN 1981). NOW CORRECTED FOR COULOMB-NUCLEAR INTERFERENCE. IN ADDITION, THE LOWEST MOMENTUM DATA POINT IS NOW KNOWN TO BE IN ERROR.


THE PRODUCTION OF anti-SIGMA+- 's IN e+ e- ANNIHILATION

Ferguson, T. ; Buchanan, C.D. ; Nodulman, L. ; et al.
Phys.Lett.B 79 (1978) 161-164, 1978.
Inspire Record 140042 DOI 10.17182/hepdata.27422

We find an increase in ∑ ± production between E cm = 4 and 7 GeV which is consistent with charmed baryon production models. A search for the decay ∧ c − → ∑ ± π ± π − yields no significant peaks.

1 data table

43 +- 16 ANTI-SIGMAS DETECTED ALTOGETHER.