Chinese Physics C > 1997, Vol. 21 > Issue(11): 961-969

Experimental Study of Hadron Inclusive Production in J/ψ Region

BES Collaborations

Institute of High Energy Physics,The Chinese Academy of Sciences,Beijing 100039

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The mean multiplicities of mesons π ^±、π ⁰、K ^±、K ⁰ _s、ρ ⁰.K ^*0、K ^*±、φ and baryons p、Ξ ^±、Σ ^±(1385) are measured for the first time in J/ψ region with 200,000 J/ψ events collected by the BES detector. The results are compatible with LUND and Shandong phenomenological models. Based on the experimental results, the strangeness suppression factor s/u and spin suppression factor V/(V+P) are calculated to be ～0.3 and ～0.3—0.5 respectively, in good agreement with those given by ARGUS Collaboration in region. This indicates that the SU(6) breaking is consistent in the energy region from J/ψ to .

References

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BES Collaborations. Experimental Study of Hadron Inclusive Production in J/ψ Region[J]. Chinese Physics C, 1997, 21(11): 961-969.

BES Collaborations. Experimental Study of Hadron Inclusive Production in J/ψ Region[J]. Chinese Physics C, 1997, 21(11): 961-969. shu

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Received: 1900-01-01
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通讯作者:陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Experimental Study of Hadron Inclusive Production in J/ψ Region

Institute of High Energy Physics,The Chinese Academy of Sciences,Beijing 100039

Received Date:1900-01-01

Accepted Date:1900-01-01

Available Online:1997-11-05

Abstract:The mean multiplicities of mesons π^±、π⁰、K^±、K⁰_s、ρ⁰.K^*0、K^*±、φ and baryons p、Ξ^±、Σ^±(1385) are measured for the first time in J/ψ region with 200,000 J/ψ events collected by the BES detector. The results are compatible with LUND and Shandong phenomenological models. Based on the experimental results, the strangeness suppression factor s/u and spin suppression factor V/(V+P) are calculated to be ～0.3 and ～0.3—0.5 respectively, in good agreement with those given by ARGUS Collaboration in region. This indicates that the SU(6) breaking is consistent in the energy region from J/ψ to .

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Experimental Study of Hadron Inclusive Production in J/ψ Region

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