D*± production in 350 GeV/c π--N interactions

被引:4
作者
Adinolfi, M
Alexandrov, Y
Angelini, C
Barberis, D
Cardini, A
Ceradini, F
Dameri, M
Darbo, G
Duane, A
Flaminio, V
French, BR
Frenkel, A
Gemme, C
Harrison, K
Hurst, R
Lazzeroni, C
Malferrari, L
Martellotti, G
Mazzanti, P
Netchaeva, P
Osculati, B
Penso, G
Rossi, L
Verzocchi, M
Websdale, DM
Zavertyaev, M
机构
[1] Univ Pisa, I-56010 San Piero Grado, PI, Italy
[2] Ist Nazl Fis Nucl, I-56010 Pisa, Italy
[3] PN Lebedev Phys Inst, RU-117924 Moscow, Russia
[4] Univ Genoa, I-16146 Genoa, Italy
[5] Ist Nazl Fis Nucl, I-16146 Genoa, Italy
[6] Univ Roma Tre, I-00146 Rome, Italy
[7] Ist Nazl Fis Nucl, I-00146 Rome, Italy
[8] Univ London Imperial Coll Sci Technol & Med, London SW7 2BZ, England
[9] CERN, CH-1211 Geneva 23, Switzerland
[10] Univ Rome La Sapienza, I-00185 Rome, Italy
[11] Ist Nazl Fis Nucl, I-00185 Rome, Italy
[12] Univ Bologna, I-40126 Bologna, Italy
[13] Ist Nazl Fis Nucl, I-40126 Bologna, Italy
关键词
charmed-meson hadroproduction; D*(+/-) masons; cross-section measurements; chi(F) and P-tau(2) distributions; vector mesons compared with pseudoscalar mesons;
D O I
10.1016/S0550-3213(99)00173-X
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We report measurements of D*+/- production in interactions between 350GeV/c pi(-) particles and nuclei. Reconstruction of the decay D*+ --> D(0)pi(+) and charge conjugate, with D-0 identified via its decays to K(-)pi(+) and K(-)pi(-)pi(+)pi(+), has allowed isolation of a sample of 611 +/- 28 D*+/- mesons, produced at positive x(F). Assuming a linear A-dependence, the cross- section per nucleon in the region x(F) > 0 is measured to be 1.41 +/- 0.10 +/- 0.11 mu b for D*+ and 1.84 +/- 0.12 +/- 0.15 mu b for D*-. We present measurements of differential cross-sections with respect to x(F) and P-t(2), and compare data for D*+/- (vector-meson) production with data for production of charmed pseudoscalar mesons. (C) 1999 Elsevier Science B.V.
引用
收藏
页码:3 / 18
页数:16
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