Study of φ and f′2(1525) meson production in (p)over-bar-p annihilation at rest

被引：33

作者：

Alberico, A ^{[1
]}

Bertin, A

Bruschi, M

Capponi, M

De Castro, S

Dona, R

Ferretti, A

Galli, D

Giacobbe, B

Marconi, U

Piccinini, M

Cesari, NS

Spighi, R

Vagnoni, V

Vecchi, S

Vigotti, F

Villa, M

Vitale, A

Zoccoli, A

Bianconi, R

Corradini, M

Rizzini, EL

Venturelli, L

Zenoni, A

Cicalo, C

Masoni, A

Mauro, S

Puddu, G

Serci, S

Temnikov, P

Usai, G

Gorchakov, OE

Nomokonov, VP

Prakhov, SN

Rozhdestvensky, AM

Sapozhnikov, MG

Tretyak, VI

Poli, M

Gianotti, P

Guaraldo, C

Lanaro, A

Lucherini, V

Nichitiu, F

Petrascu, C

Rosca, A

Ableev, VG

Cavion, C

Gastaldi, U

Lombardi, M

Maron, G

机构：

[1] Univ Bologna, Dipartimento Fis, Bologna, Italy

[2] Ist Nazl Fis Nucl, Sez Bologna, Bologna, Italy

[3] Univ Brescia, Dipartimento Chim & Fis Mat, Brescia, Italy

[4] Ist Nazl Fis Nucl, Sez Pavia, Pavia, Italy

[5] Univ Cagliari, Dipartimento Sci Fis, I-09100 Cagliari, Italy

[6] Ist Nazl Fis Nucl, Sez Cagliari, I-09100 Cagliari, Italy

[7] Joint Inst Nucl Res, Dubna, Russia

[8] Ist Nazl Fis Nucl, Sez Bologna, Bologna, Italy

[9] Univ Florence, Dipartimento Energet, Florence, Italy

[10] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[11] Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy

[12] Univ Pavia, Dipartimento Fis Nucl & Teor, I-27100 Pavia, Italy

[13] Ist Nazl Fis Nucl, Sez Pavia, I-27100 Pavia, Italy

[14] Univ Turin, Dipartimento Fis A Avogadro, Turin, Italy

[15] Ist Nazl Fis Nucl, Sez Torino, I-10125 Turin, Italy

[16] Univ Turin, Dipartimento Fis Sperimentale, Turin, Italy

[17] Univ Trieste, Dipartimento Fis, Trieste, Italy

[18] Ist Nazl Fis Nucl, Sez Trieste, Trieste, Italy

[19] Politecn Torino, Dipartimento Fis, Turin, Italy

[20] Univ Udine, Dipartimento Fis, I-33100 Udine, Italy

来源：

PHYSICS LETTERS B | 1998年 / 438卷 / 3-4期

关键词：

D O I：

10.1016/S0370-2693(98)01160-5

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The reaction (p) over bar p --> K+K- pi(0) was analysed for antiproton annihilations at rest at three hydrogen target densities. A strong dependence of the (p) over bar p --> phi pi(0) yield on the quantum numbers of the initial state is observed. The branching ratio of the phi pi(0) channel from the S-3(1) initial state is more than 15 times larger than the one from the P-1(1) state. A large apparent violation of the OZI rule for tensor meson production from (p) over bar p-annihilations from the P-waves (1(++) + 2(++)) is observed: R-exp(f(2)'pi(0)/f(2)pi(0)) = (149 +/- 20) . 10(-3), significantly exceeding the OZI-rule prediction R = 16 . 10(-3). (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：430 / 440

页数：11

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