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OBSERVATION OF ANOMALOUS PRODUCTION OF MUON PAIRS IN e+ e- ANNIHILATION INTO FOUR LEPTON FINAL STATES

The AMY collaboration Ho, Y.H. ; Kurihara, Y. ; Omori, T. ; et al.
Phys.Lett.B 244 (1990) 573-579, 1990.
Inspire Record 294829 DOI 10.17182/hepdata.51362

We report results of a study of four-lepton final states produced in e + e − collisions at center-of-mass energies from 50 to 61.4 GeV using the AMY detector at the TRISTAN collider. For the cases where two or three charged tracks are produced at large angles relative to the beam direction, the cross sections agree with QED. However, we observe an excess of e + e − → e + e − μ + μ − events with four tracks at wide angles and with dimuon mass less than 1.0 GeV / c 2 .

1 data table
Table 1

No description provided.


Comparative Characteristics of Central and Noncentral C C Interactions at 4.2-{GeV} Per Nucleon

Agakishiev, G.N. ; Backovic, S. ; Boldea, V. ; et al.
Sov.J.Nucl.Phys. 51 (1990) 481-485, 1990.
Inspire Record 285507 DOI 10.17182/hepdata.17258

None

5 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

P - IS PROTON-PARTICIPANTS, ITS NUMBER WAS DEFINED AS FOLLOWS: N(P)=N+ - N - N(S,P) - N(S,T), WHERE N+ , N- - NUMBER OF MULT(CHARGED) PARTICLES WITH Z=+1 AND Z=-1, N(S,P), N(S,T) - NUMBER OF STRIPPING PARTICLES WITH Z=1 FROM PROJECTILE (P>3 GEV, THETA<4 DEG) AND TARGET (P<0.3 GEV FOR PROTONS).

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The Reaction d (polarized) p ---> He-3 pi0 near threshold

Nikulin, V.N. ; Boudard, A. ; Clajus, M. ; et al.
Phys.Rev.C 54 (1996) 1732-1740, 1996.
Inspire Record 421018 DOI 10.17182/hepdata.25833

Angular distributions for the differential cross section and three deuteron analyzing powers iT11, T20, and T22 of the reaction d→p→3Heπ0 have been measured over the whole angular domain at 20 energies close to threshold (0.03<Tπc.m.<10.2 MeV). The differential cross section and tensor analyzing power T20 both show strong variation in energy and angle due to interference between S- and P-wave pion production, whereas iT11 and T22 remain consistent with zero over the whole experimental range. All the data at different energies and angles fall on universal curves when plotted as functions of the single variable pπcosΘ, evaluated in the c.m. The broad features of the results are in line with theoretical expectations. © 1996 The American Physical Society.

1 data table
Table 1

No description provided.


Inclusive spectra of pi- mesons with cumulative number n(c) > 0.35 produced in d C, He C, and C C interactions at 4.2-GeV/c per nucleon.

Baatar, Ts. ; Batsaikhan, Ts. ; Ivanovskaya, I.A. ; et al.
Sov.J.Nucl.Phys. 53 (1991) 292-296, 1991.
Inspire Record 295859 DOI 10.17182/hepdata.38726

None

2 data tables
Table 1

No description provided.

Table 2

No description provided.


THE STUDY OF p C INTERACTIONS AT p (p) = 10-GeV/c WITH THE EMISSION OF CUMULATIVE DEUTERONS

Armutliisky, D. ; Kopylova, D.K. ; Lyubimov, V.B. ; et al.
Sov.J.Nucl.Phys. 48 (1988) 294, 1988.
Inspire Record 250949 DOI 10.17182/hepdata.38920

None

8 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

ALL NEGATIVE PARTICLES WAS CONSIDERED AS PI-.

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Rapidity distributions of protons in (p, d, alpha, C) C interactions at 4.2-GeV/c per nucleon

Bekmirzaev, R.N. ; Kladnitskaya, E.N. ; Muminov, M.M. ; et al.
Phys.Atom.Nucl. 58 (1995) 1548-1554, 1995.
Inspire Record 382325 DOI 10.17182/hepdata.38665

None

7 data tables
Table 1

ASYM is defined as follows: ASYM = (SIG(YRAP(P=3,RF=LAB)<1.1) - (SIG(YRAP(P=3,RF=LAB)>1.1)) / (SIG(YRAP(P=3,RF=LAB)<1.1)+ SIG(YRAP(P=3,RF=LAB)>1.1)).

Table 2

ASYM is defined as follows: ASYM = (SIG(YRAP(P=3,RF=LAB)<1.1) - (SIG(YRAP( P=3,RF=LAB)>1.1)) / (SIG(YRAP(P=3,RF=LAB)<1.1)+SIG(YRAP(P=3,RF=LAB)>1.1)).

Table 3

ASYM is defined as follows: ASYM = (SIG(YRAP(P=3,RF=LAB)<1.1) - (SIG(YRAP( P=3,RF=LAB)>1.1)) / (SIG(YRAP(P=3,RF=LAB)<1.1)+SIG(YRAP(P=3,RF=LAB)>1.1)).

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THE STUDY OF NEUTRON INTERACTIONS WITH PROTONS AND CARBON NUCLEI AT p = 4.2-GeV/c

Bekmirzaev, R.N. ; Grishina, O.V. ; Dolejsi, J. ; et al.
JINR-P1-88-617, 1988.
Inspire Record 267743 DOI 10.17182/hepdata.38835

None

5 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Cumulative production of pi- mesons in pi C interactions at 40-GeV/c

Baatar, Ts. ; Batsaikhan, Ts. ; Ivanovskaya, I.A. ; et al.
Sov.J.Nucl.Phys. 52 (1990) 504-508, 1990.
Inspire Record 299082 DOI 10.17182/hepdata.38727

None

7 data tables
Table 1

HERE XL IS CUMULATIVE NUMBER, DEFINED AS FOLLOWS: (E-PL)/M(NUCLEON). THE DISTRIBUTION (1/N)*D(N)/D(XL) WAS FITTED BY THE SUM: CONST(1)* EXP(-SLOPE(1)*XL)+CONST(2)*EXP(-SLOPE(2)*XL).

Table 2

HERE XL IS CUMULATIVE NUMBER, DEFINED AS FOLLOWS: (E-PL)/M(NUCLEON). THE DISTRIBUTION (XL/N)*D(N)/D(XL) WAS FITTED BY THE SUM: CONST(1)* EXP(-SLOPE(1)*XL)+CONST(2)*EXP(-SLOPE(2)*XL).

Table 3

HERE XL IS CUMULATIVE NUMBER, DEFINED AS FOLLOWS: (E-PL)/M(NUCLEON).

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General characteristics of pi- mesons produced in d (C), alpha (C) interactions at 1-GeV/N and 3.3-GeV/N

Viryasov, N.M. ; Gulkanian, G.R. ; Kakoyan, V.G. ; et al.
JINR-P1-90-521, 1990.
Inspire Record 304495 DOI 10.17182/hepdata.38730

None

5 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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The Study of secondary neutron production in pi- Xe interactions at 3.5-GeV/c. (In Russian)

Bekmirzaev, R.N. ; Grishin, V.G. ; Ibatov, R.M. ; et al.
Dubna JINR - 91-495 (91/11,rec.Mar.92) 7 p, 1991.
Inspire Record 325756 DOI 10.17182/hepdata.38653

None

3 data tables
Table 1

No description provided.

Table 2

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Table 3

No description provided.