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Evidence For A Narrow Near Threshold Structure In The J Psi Phi Mass Spectrum In B To J Psi Phi K Decays

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Nuclear Science Abstracts

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Author :
language : en
Publisher:
Release Date : 1976

Nuclear Science Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1976 with Nuclear energy categories.

Evidence For A Narrow Near Threshold Structure In The J Psi Phi Mass Spectrum In B To J Psi Phi K Decays

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Author :
language : en
Publisher:
Release Date : 2009

Evidence For A Narrow Near Threshold Structure In The J Psi Phi Mass Spectrum In B To J Psi Phi K Decays written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with categories.

Evidence is reported for a narrow structure near the J/[psi][phi] threshold in exclusive B+ → J/[psi][phi]K+ decays produced in {bar p}p collisions at √s = 1.96 TeV. A signal of 14 ± 5 events, with statistical significance in excess of 3.8 standard deviations, is observed in a data sample corresponding to an integrated luminosity of 2.7 fb−1, collected by the CDF II detector. The mass and natural width of the structure are measured to be 4143.0 ± 2.9(stat) ± 1.2(syst) MeV/c2 and 11.7{sub -5.0}{sup +8.3}(stat) ± 3.7(syst) MeV/c2.

High Energy Physics Index

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Author :
language : en
Publisher:
Release Date : 1990

High Energy Physics Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Nuclear physics categories.

Observation Of A Narrow Near Threshold Structure In The J Psi Phi Mass Spectrum In B To J Psi Phi K Decays

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Author :
language : en
Publisher:
Release Date : 2010

Observation Of A Narrow Near Threshold Structure In The J Psi Phi Mass Spectrum In B To J Psi Phi K Decays written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.

Observation is reported for a structure near the J/[psi][phi] threshold in B+ → J/[psi][phi]K+ decays produced in {bar p}p collisions at √s = 1.96 TeV with a statistical significance of beyond 5 standard deviations. There are 19 ± 6 events observed for this structure at a mass of 4143.4{sub -3.0}{sup +2.9}(stat) ± 0.6(syst) MeV/c2 and a width of 15.3{sub -6.1}{sup +10.4}(stat) ± 2.5(syst) MeV/c2, which are consistent with the previous measurements reported as evidence of the Y(4140).