Asymmetries between the production of D+ and D- mesons from 500 GeV/c pi(-)-nucleus interactions as a function of x(F) and p(t)(2)

被引：110

作者：

Aitala, EM

Amato, S

Anjos, JC

Appel, JA

Ashery, D

Banerjee, S

Bediaga, I

Blaylock, G

Bracker, SB

Burchat, PR

Burnstein, RA

Carter, T

Carvalho, HS

Costa, I

Cremaldi, LM

Darling, C

Denisenko, K

Fernandez, A

Gagnon, P

Gerzon, S

Gobel, C

Gounder, K

Granite, D

Halling, AM

Herrera, G

Hurvits, G

James, C

Kasper, PA

Kondakis, N

Kwan, S

Langs, DC

Leslie, J

Lichtenstadt, J

Lundberg, B

Manacero, A

MayTalBeck, S

Meadows, B

deMello, JRT

Milburn, RH

deMiranda, JM

Napier, A

Nguyen, A

dOliveira, AB

OShaugnessy, K

Peng, KC

Perera, LP

Purohit, MV

Quinn, B

Radeztsky, S

Rafatian, A

机构：

[1] UNIV CINCINNATI,CINCINNATI,OH 45221

[2] CINVESTAV IPN,MEXICO CITY,DF,MEXICO

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

[4] IIT,CHICAGO,IL 60616

[5] KANSAS STATE UNIV,MANHATTAN,KS 66506

[6] UNIV MISSISSIPPI,UNIVERSITY,MS 38677

[7] OHIO STATE UNIV,COLUMBUS,OH 43210

[8] PRINCETON UNIV,PRINCETON,NJ 08544

[9] UNIV AUTONOMA PUEBLA,PUEBLA 72570,MEXICO

[10] UNIV S CAROLINA,COLUMBIA,SC 29208

[11] STANFORD UNIV,STANFORD,CA 94305

[12] TEL AVIV UNIV,IL-69978 TEL AVIV,ISRAEL

[13] TUFTS UNIV,MEDFORD,MA 02155

[14] UNIV WISCONSIN,MADISON,WI 53706

[15] YALE UNIV,NEW HAVEN,CT 06511

[16] CTR BRASILEIRO PESQUISAS FIS,RIO JANEIRO,BRAZIL

[17] CTR BRASILEIRO PESQUISAS FIS,RIO JANEIRO,BRAZIL

[18] UNIV CALIF SANTA CRUZ,SANTA CRUZ,CA 95064

来源：

PHYSICS LETTERS B | 1996年 / 371卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(96)00093-7

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present asymmetries between the production of D+ and D- mesons in Fermilab experiment E791 as a function of x(F) and p(t)(2). The data used here consist of 74000 fully-reconstructed charmed mesons produced by a 500 GeV/c pi(-) beam on C and Pt foils. The measurements are compared to results of models which predict differences between the production of heavy-quark mesons that have a light quark in common with the beam (leading particles) and those that do not (non-leading particles). While the default models do not agree with our data, we can reach agreement with one of them, PYTHIA, by making a limited number of changes to parameters used.

引用

页码：157 / 162

页数：6

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