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

SHEN Cheng-Ping; YUAN Chang-Zheng

doi:10.1088/1674-1137/34/8/002

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2024年10月30日

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)

SHEN Cheng-Ping ^, ,
YUAN Chang-Zheng

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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/c² and the width is (221⁺³⁴_－24) MeV/c² for the φ(1680), and the mass is (2117⁺⁵⁹_－49) MeV/c² and the width is (164⁺⁶⁹_－80) MeV/c² for 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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[4]	WANG Wen-Feng (for the BABAR collaboration) . Precise measurement of the e⁺e^－→π⁺π^－(γ) cross section with the initial state radiation method at BABAR. Chinese Physics C, 2010, 34(6): 692-697. doi: 10.1088/1674-1137/34/6/014
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[6]	B. Meadows (representing the BABAR collaboration) . D⁰D⁰ mixing and other recent charm results from BABAR. Chinese Physics C, 2010, 34(6): 780-787. doi: 10.1088/1674-1137/34/6/028
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[10]	ZHANG Zhi-Qing , XIAO Zhen-Jun . B→f₀(980) (π,η^(′)) decays in the PQCD approach. Chinese Physics C, 2009, 33(7): 508-515. doi: 10.1088/1674-1137/33/7/002
[11]	WANG Wei , . Measuring D⁰-D⁰ mixing in D→f₀(980) K^* and more. Chinese Physics C, 2008, 32(10): 773-775. doi: 10.1088/1674-1137/32/10/001
[12]	ZHAO Xian-Feng , WANG Shun-Jin , ZHANG Hua , JIA Huan-Yu . Effect of f₀(975) and φ(1020) Mesons on Neutron Star Mater. Chinese Physics C, 2007, 31(4): 345-349.
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SHEN Cheng-Ping and YUAN Chang-Zheng. Combined fit to BABAR and Belle Data on e⁺e^－→φπ⁺π^－ and φf₀(980)[J]. Chinese Physics C, 2010, 34(8): 1045-1051. doi: 10.1088/1674-1137/34/8/002

SHEN Cheng-Ping and YUAN Chang-Zheng. Combined fit to BABAR and Belle Data on e⁺e^－→φπ⁺π^－ and φf₀(980)[J]. Chinese Physics C, 2010, 34(8): 1045-1051. doi: 10.1088/1674-1137/34/8/002 shu

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

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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/c² and the width is (221⁺³⁴_－24) MeV/c² for the φ(1680), and the mass is (2117⁺⁵⁹_－49) MeV/c² and the width is (164⁺⁶⁹_－80) MeV/c² for 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.