STUDY OF THE REACTION E+E- -]PPBAR IN THE TOTAL ENERGY-RANGE 1925-2180 MEV

被引：103

作者：

DELCOURT, B

DERADO, I

BERTRAND, JL

BISELLO, D

BIZOT, JC

BUON, J

CORDIER, A

ESCHSTRUTH, P

FAYARD, L

JEANJEAN, J

JEANJEAN, M

MANE, F

PARVAN, JC

RIBES, M

RUMPF, F

机构：

[1] Laboratoire de l'Accélérateur Linéaire

来源：

PHYSICS LETTERS B | 1979年 / 86卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(79)90864-5

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The e+e- → pp cross section has been measured between 1925 and 2180 MeV. About 50 pp events were detected. The total cross section decreases from 1.31 ± 0.4 nb near 1937 MeV to 0.55 ± 0.2 nb near 2135 MeV. The proton form factors |GE|2 and |GM|2, assumed identical, decrease from 0.15 ± 0.05 to 0.043 ± 0.015. They are an order of magnitude higher than predicted by the well-known dipole fit. The energy range has been scanned in steps of about 2 MeV. No significant structure was found in this pp sample. © 1979.

引用

页码：395 / 398

页数：4

共 14 条

[1] 1ST DETERMINATION OF PROTON ELECTROMAGNETIC FORM-FACTORS AT THRESHOLD OF TIME-LIKE REGION [J].

BASSOMPIERRE, G ;

BINDER, G ;

DALPIAZ, P ;

DALPIAZ, PF ;

GISSINGER, G ;

JACQUEY, S ;

PERONI, C ;

SCHNEEGANS, MA ;

TECCHIO, L .

PHYSICS LETTERS B, 1977, 68 (05) :477-479

[2] EVIDENCE FOR 2 NARROW PP-BAR RESONANCES AT 2020 MEV AND 2200 MEV [J].

BENKHEIRI, P ;

BOUCROT, J ;

BOUQUET, B ;

BRIANDET, P ;

DALMAGNE, B ;

DANGVU, C ;

EISENSTEIN, B ;

FERRER, A ;

FLEURY, P ;

GROSSETETE, B ;

IRWIN, G ;

JACHOLKOWSKI, A ;

LAHELLEC, A ;

NGUYEN, H ;

PETROFF, P ;

RICHARD, F ;

RIVET, P ;

DEROSNY, G ;

ROUDEAU, P ;

ROUGE, A ;

RUMPF, M ;

SIX, J ;

THENARD, JM ;

TREILLE, D ;

VOLTE, A ;

YAFFE, D ;

YIOU, TP ;

YOSHIDA, H .

PHYSICS LETTERS B, 1977, 68 (05) :483-486

[3]

BLATNIK S, 1974, ACTA PHYS AUSTRIACA, V39, P62

[4] OBSERVATION OF A NARROW RESONANCE NEAR PBARP THRESHOLD [J].

BRUCKNER, W ;

GRANZ, B ;

INGHAM, D ;

KILIAN, K ;

LYNEN, U ;

NIEWISCH, J ;

PIETRZYK, B ;

POVH, B ;

RITTER, HG ;

SCHRODER, H .

PHYSICS LETTERS B, 1977, 67 (02) :222-224

[5] ELECTRON-POSITRON COLLIDING BEAM EXPERIMENTS [J].

CABIBBO, N ;

GATTO, R .

PHYSICAL REVIEW, 1961, 124 (05) :1577-&

[6] OBSERVATION OF STRUCTURE IN -PP AND -PD TOTAL CROSS-SECTIONS BELOW 1.1 GEV-C [J].

CARROLL, AS ;

CHIANG, IH ;

KYCIA, TF ;

LI, KK ;

MAZUR, PO ;

MICHAEL, DN ;

MOCKETT, P ;

RAHM, DC ;

RUBINSTEIN, R .

PHYSICAL REVIEW LETTERS, 1974, 32 (05) :247-250

[7] REACTION E+E--]PP-BAR AT A TOTAL ENERGY OF 2.1 GEV [J].

CASTELLANO, M ;

DIGIUGNO, G ;

HUMPHREY, JW ;

PALMIERI, ES ;

TROISE, G ;

TROYA, U ;

VITALE, S .

NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA A-NUCLEI PARTICLES AND FIELDS, 1973, A 14 (01) :1-20

[8] MEASUREMENT OF TOTAL AND PARTIAL PP CROSS-SECTION BETWEEN 1901 AND 1950 MEV [J].

CHALOUPKA, V ;

DREVERMAN, H ;

MARZANO, F ;

MONTANET, L ;

SCHMID, P ;

FRY, JR ;

ROHRINGER, H ;

SIMOPOULOU, S ;

HANTON, J ;

GRARD, F ;

HENRI, VP ;

JOHNSTAD, H ;

LESCEUX, JM ;

SKURA, JS ;

BETTINI, A ;

CRESTI, M ;

PERUZZO, L ;

ROSSI, P ;

BIZZARRI, R ;

IORI, M ;

CASTELLI, E ;

OMERO, C ;

POROPAT, P .

PHYSICS LETTERS B, 1976, 61 (05) :487-492

[9]

ERNST FJ, 1962, PHYS REV, V126, P2256

[10] LOW-DENSITY, CYLINDRICAL MWPC WITH SIMULTANEOUS ANODE AND CATHODE READOUT FOR USE IN A MAGNETIC DETECTOR [J].

JEANJEAN, J ;

JEANJEAN, M ;

MADARAS, R ;

MASNOU, JL ;

PEREZYJO.J ;

QUENZER, A ;

RUMPF, F ;

BERTRAND, JL ;

BIZOT, JC ;

CHASE, RL ;

CORDIER, A ;

DELCOURT, B ;

ESCHSTRUTH, P ;

GROSDIDIER, G .

NUCLEAR INSTRUMENTS & METHODS, 1974, 117 (02) :349-354

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