Enhanced leading production of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="italic">D</mml:mi></mml:mrow><mml:mrow><mml:mo>±</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="italic">D</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="normal">*</mml:mi><mml:mo>±</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>in 250 GeV<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">π</mml:mi></mml:mrow><mml:mrow><mml:mo>±</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>-nucleon interactions

G. A. Alves , S. Amato , J. C. Anjos , G. A. Alves , S. Amato , J. C. Anjos , J. A. Appel , J. Astorga , Tchigique Bernard , S. B. Bracker , L. Cremaldi , C. Darling , R. Dixon , D. Errede , C. Gay , D. R. Green , Robert Jedicke , P. E. Karchin , S. Kwan , L. J. Lueking , A. De Roeck , J. Metheny , R. H. Milburn , J. M. De Miranda , H. da Motta , A. Napier , D. Passmore , A. Rafatian , A. C. dos Reis , W. R. Ross , A. F. S. Santoro , M. Sheaff , M. H. G. Souza , W. J. Spalding , Chris Stoughton , M. E. Streetman , D. J. Summers , S. Takach , A. Wallace , Z. Wu
1994 Physical Review Letters 76 citations

Abstract

A leading charm meson is one with longitudinal momentum fraction, xF>0, whose light quark (or antiquark) is of the same type as one of the quarks in the beam particles. We report on the production asymmetry, A=[σ(leading-σ(nonleading)]/[σ(leading)+σ(nonleading)] as a function of xF. The data consist of 1500 fully reconstructed D± and D*± decays in Fermilab experiment E 769. We find a significant asymmetry for the production of charm quarks is not expected in perturbative quantum chromodynamics.Received 22 October 1993DOI:https://doi.org/10.1103/PhysRevLett.72.812©1994 American Physical Society

Keywords

PhysicsParticle physicsQuarkQuantum chromodynamicsProduction (economics)Charm (quantum number)AsymmetryCharm quarkSigmaQuantum mechanics

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Publication Info

Year
1994
Type
article
Volume
72
Issue
6
Pages
812-815
Citations
76
Access
Closed

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G. A. Alves, S. Amato, J. C. Anjos et al. (1994). Enhanced leading production of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="italic">D</mml:mi></mml:mrow><mml:mrow><mml:mo>±</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="italic">D</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="normal">*</mml:mi><mml:mo>±</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>in 250 GeV<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">π</mml:mi></mml:mrow><mml:mrow><mml:mo>±</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>-nucleon interactions. Physical Review Letters , 72 (6) , 812-815. https://doi.org/10.1103/physrevlett.72.812

Identifiers

DOI
10.1103/physrevlett.72.812