Production of Prompt Charmonia in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="italic">e</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="italic">e</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>Annihilation at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msqrt><mml:mrow><mml:mi mathvariant="italic">s</mml:mi></mml:mrow></mml:msqrt><mml:mi/><mml:mi>≈</mml:mi><mml:mi/><mml:mn>10.6</mml:mn><mml:mi/><mml:mi>GeV</mml:mi></mml:math>

200271 citationsJournal Articlegreen Open Access

Authors

K. Abe · High Energy Accelerator Research Organization

K. Abe · Tohoku University

I. Adachi · High Energy Accelerator Research Organization

Byoung Sup Ahn · Korea University

H. Aihara · The University of Tokyo

M. Akatsu ·

Abstract

The production of prompt J/psi, psi(2S), chi(c1), and chi(c2) is studied using a 32.4 fb(-1) data sample collected with the Belle detector at Upsilon(4S) and at 60 MeV below the resonance. The yield of prompt J/psi mesons in the Upsilon(4S) sample is compatible with that of continuum production; we set an upper limit B(Upsilon(4S)-->J/psiX) < 1.9 x 10(-4) at the 95% confidence level, and find sigma(e(+)e(-)-->J/psiX) = 1.47 plus/minus 0.10 plus/minus 0.13 pb. The cross sections for prompt psi(2S) and direct J/psi are measured. The J/psi momentum spectrum, production angle distribution, and polarization are studied.

Topics & Keywords

Particle physics theoretical and experimental studies High-Energy Particle Collisions Research Quantum Chromodynamics and Particle Interactions

Publication Details

Published in: Physical Review Letters

Volume 88, Issue 5, pp. 052001-052001

DOI: 10.1103/physrevlett.88.052001

Field-Weighted Citation Impact: 13.67

Command Palette

Authors

Abstract

Topics & Keywords

Publication Details