Production of charm mesons at high transverse momentum in 515 GeV/c pi(-)-nucleon collisions

被引：16

作者：

Apanasevich, L

Bacigalupi, J

Baker, W

Begel, M

Blusk, S

Bromberg, C

Chang, P

Choudhary, B

Chung, WH

deBarbaro, L

DeSoi, W

Dlugosz, W

Dunlea, J

Engels, E

Fanourakis, G

Ferbel, T

Ftacnik, J

Garelick, D

Ginther, G

Glaubman, M

Gutierrez, P

Hartman, K

Huston, J

Johnstone, C

Kapoor, V

Kuehler, J

Lirakis, C

Lobkowicz, F

Lukens, P

Mani, S

Mansour, J

Maul, A

Miller, R

Oh, BY

Osborne, G

Pellett, D

Prebys, E

Roser, R

Shepard, P

Shivpuri, R

Skow, D

Slattery, P

Sorrell, L

Striley, D

Toothacker, W

Varelas, N

Weerasundara, D

Whitmore, JJ

Yasuda, T

Yosef, C

机构：

[1] UNIV CALIF DAVIS,DAVIS,CA 95616

[2] UNIV DELHI,DELHI 110007,INDIA

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

[4] NORTHEASTERN UNIV,BOSTON,MA 02115

[5] UNIV OKLAHOMA,NORMAN,OK 73019

[6] PENN STATE UNIV,UNIVERSITY PK,PA 16802

[7] UNIV PITTSBURGH,PITTSBURGH,PA 15260

[8] UNIV ROCHESTER,ROCHESTER,NY 14627

来源：

PHYSICAL REVIEW D | 1997年 / 56卷 / 03期

关键词：

D O I：

10.1103/PhysRevD.56.1391

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present results on the production of high transverse momentum charm mesons in collisions of 515 GeV/c negative pions with beryllium and copper targets. The experiment recorded a large sample of events containing high transverse momentum (p(T)) showers detected in an electromagnetic calorimeter. From these data, a sample of charm mesons has been reconstructed via their decay into the fully charged K pi pi mode. A measurement of the single inclusive transverse momentum distribution of charged D mesons from 1 to 8 GeV/c is presented. An extrapolation of the measured differential cross section yields an integrated D+/- cross section of 11.4 +/- 2.7 (stat) +/- 3.3 (syst) mu b per nucleon for D+/- mesons with x(F) > 0. The data are compared with expectations based upon next-to-leading-order perturbative QCD, as well as with results from PYTHIA. We also compare our integrated D+/- cross section with measurements from other experiments.

引用

页码：1391 / 1406

页数：16

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