Chinese Physics C > 2010, Vol. 34 > Issue(8): 1045-1051 DOI: 10.1088/1674-1137/34/8/002

Combined fit to BABAR and Belle Data on e⁺e^－→φπ⁺π^－and φf₀(980)

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Abstract：

A combined fit is performed to the BABAR and Belle measurements of the e⁺e^－→φπ⁺π^－and φf₀(980) cross sections for center-of-mass energy between threshold and 3.0 GeV. The resonance parameters of the φ(1680) and Y(2175) are determined. The mass is (1681⁺¹⁰_－12) MeV/c²and the width is (221⁺³⁴_－24) MeV/c²for the φ(1680), and the mass is (2117⁺⁵⁹_－49) MeV/c²and the width is (164⁺⁶⁹_－80) MeV/c²for the Y(2175). This information will shed light on the understanding of the nature of the excited φ and Y states observed in e⁺e^－annihilation.

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SHEN Cheng-Ping and YUAN Chang-Zheng. Combined fit to BABAR and Belle Data on e ⁺e ^－→φπ ⁺π ^－and φf ₀(980)[J]. Chinese Physics C, 2010, 34(8): 1045-1051. doi: 10.1088/1674-1137/34/8/002

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Received: 2009-11-18
Revised: 2010-01-11

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

Combined fit to BABAR and Belle Data on e⁺e^－→φπ⁺π^－and φf₀(980)

SHEN Cheng-Ping^,
YUAN Chang-Zheng

Corresponding author:SHEN Cheng-Ping,

Received Date:2009-11-18
Accepted Date:2010-01-11
Available Online:2010-08-05

Abstract:

A combined fit is performed to the BABAR and Belle measurements of the e⁺e^－→φπ⁺π^－and φf₀(980) cross sections for center-of-mass energy between threshold and 3.0 GeV. The resonance parameters of the φ(1680) and Y(2175) are determined. The mass is (1681⁺¹⁰_－12) MeV/c²and the width is (221⁺³⁴_－24) MeV/c²for the φ(1680), and the mass is (2117⁺⁵⁹_－49) MeV/c²and the width is (164⁺⁶⁹_－80) MeV/c²for the Y(2175). This information will shed light on the understanding of the nature of the excited φ and Y states observed in e⁺e^－annihilation.