J/psi and psi(2S) production in p(p)over-bar collisions at root s=1.8 TeV

被引：357

作者：

Abe, F

Akimoto, H

Akopian, A

Albrow, MG

Amendolia, SR

Amidei, D

Antos, J

Aota, S

Apollinari, G

Asakawa, T

Ashmanskas, W

Atac, M

Azfar, F

AzziBacchetta, P

Bacchetta, N

Badgett, W

Bagdasarov, S

Bailey, MW

Bao, J

deBarbaro, P

BarbaroGaltieri, A

Barnes, VE

Barnett, BA

Barone, M

Barzi, E

Bauer, G

Baumann, T

Bedeschi, F

Behrends, S

Belforte, S

Bellettini, G

Bellinger, J

Benjamin, D

Benlloch, J

Bensinger, J

Benton, D

Beretvas, A

Berge, JP

Berryhill, J

Bertolucci, S

Bevensee, B

Bhatti, A

Biery, K

Binkley, M

Bisello, D

Blair, RE

Blocker, C

Bodek, A

Bokhari, W

Bolognesi, V

机构：

[1] ARGONNE NATL LAB,ARGONNE,IL 60439

[2] UNIV BOLOGNA,IST NAZL FIS NUCL,I-40127 BOLOGNA,ITALY

[3] BRANDEIS UNIV,WALTHAM,MA 02264

[4] UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024

[5] UNIV CHICAGO,CHICAGO,IL 60638

[6] DUKE UNIV,DURHAM,NC 28708

[7] UNIV FLORIDA,GAINESVILLE,FL 33611

[8] IST NAZL FIS NUCL,LAB NAZL FRASCATI,I-00044 FRASCATI,ITALY

[9] UNIV GENEVA,CH-1211 GENEVA 4,SWITZERLAND

[10] HARVARD UNIV,CAMBRIDGE,MA 02138

[11] HIROSHIMA UNIV,HIGASHIHIROSHIMA 724,JAPAN

[12] UNIV ILLINOIS,URBANA,IL 61801

[13] MCGILL UNIV,INST PARTICLE PHYS,MONTREAL,PQ H3A 2T8,CANADA

[14] UNIV TORONTO,TORONTO,ON M5S 1A7,CANADA

[15] JOHNS HOPKINS UNIV,BALTIMORE,MD 21218

[16] MIT,CAMBRIDGE,MA 02139

[17] UNIV MICHIGAN,ANN ARBOR,MI 48109

[18] MICHIGAN STATE UNIV,E LANSING,MI 48824

[19] UNIV NEW MEXICO,ALBUQUERQUE,NM 87132

[20] OHIO STATE UNIV,COLUMBUS,OH 43320

[21] OSAKA CITY UNIV,OSAKA 588,JAPAN

[22] UNIV PADUA,IST NAZL FIS NUCL,SEZ PADOVA,I-36132 PADUA,ITALY

[23] UNIV PENN,PHILADELPHIA,PA 19104

[24] UNIV PISA,IST NAZL FIS NUCL,I-56100 PISA,ITALY

[25] SCUOLA NORMALE SUPER PISA,I-56100 PISA,ITALY

[26] UNIV PITTSBURGH,PITTSBURGH,PA 15270

[27] PURDUE UNIV,W LAFAYETTE,IN 47907

[28] UNIV ROCHESTER,ROCHESTER,NY 14628

[29] ROCKEFELLER UNIV,NEW YORK,NY 10021

[30] RUTGERS STATE UNIV,PISCATAWAY,NJ 08854

[31] ACAD SINICA,TAIPEI 11530,TAIWAN

[32] TEXAS A&M UNIV,COLLEGE STN,TX 77843

[33] TEXAS TECH UNIV,LUBBOCK,TX 79409

[34] UNIV TSUKUBA,TSUKUBA 315,IBARAKI,JAPAN

[35] TUFTS UNIV,MEDFORD,MA 02155

[36] UNIV WISCONSIN,MADISON,WI 53806

[37] YALE UNIV,NEW HAVEN,CT 06511

[38] FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510

[39] ERNEST ORLANDO LAWRENCE BERKELEY NATL LAB,BERKELEY,CA 94720

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.79.572

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a study of J/psi and psi(2S) production in p (p) over bar collisions, at root s = 1.8 TeV with the CDF detector at Fermilab. The J/psi and psi(2S) mesons are reconstructed using their mu(+)mu(-) decay modes. We have measured the inclusive production cross section for both mesons as a function of their transverse momentum in the central region, \eta\ < 0.6. We also measure the fraction of these events originating from b hadrons. We thus extract individual cross-sections for J/psi and psi(2S) mesons from b-quark decays and prompt production. We find a large excess (approximately a factor of 50) of direct psi(2S) production compared with predictions from the color singlet model.

引用

页码：572 / 577

页数：6

共 21 条

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