X Y Z particles at BABAR

E. Prencipe

doi:10.1088/1674-1137/34/6/006

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2024年10月30日

Chinese Physics C> 2010, Vol. 34> Issue(6) : 644-649 DOI: 10.1088/1674-1137/34/6/006

X Y Z particles at BABAR

E. Prencipe ^,

LAPP - Laboratoire de Annecy de Physique de Particules, Annecy-le-Vieux, 74914, France

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Abstract：
This paper intends to shortly summarize the recent results on Spectroscopy, published from the BABAR Collaboration. The BABAR experiment is a B-factory, at SLAC, where asymmetric energy beams of electron-positron are accelerated and collide at the energy in the center of mass of Υ(4S). In 9 years of data taking, BABAR had collected 433 fb^－1 equivalent luminosity on-peak-data at the Υ(4S) energy, 30 fb^－1 data at the Υ(3S) energy, 15 fb^－1 data at the Υ(2S) energy, and a scan around Υ(4S) was done, collecting 25 pb^－1 every 5 MeV. Thanks to the high luminosity achieved, it is possible to perform high precision measurements, and spectroscopy studies. An update on the measurement of the state X(3872) will be given, as final result published by using the whole dataset available. Then, a new preliminary Y(4260) measurement is reported, and the study of the invariant mass J/ψ π⁺π^－ in ISR events is shown, where no evidence of the state Y(4050) is highlighted. As conclusion, the results on the angular distribution analysis performed on the state Z(4430) are reported.

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[6]	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
[7]	E. P. Solodov (for the BABAR collaboration) . Study of the e⁺ e^－ to hadrons via ISR at BABAR. Chinese Physics C, 2010, 34(6): 660-668. doi: 10.1088/1674-1137/34/6/009
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[10]	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
[11]	SHEN Cheng-Ping (for the Belle collaboration) . XYZ particles at Belle. Chinese Physics C, 2010, 34(6): 615-620. doi: 10.1088/1674-1137/34/6/001
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[17]	N. Neri (for the BABAR Collaboration) . Charm mixing from BABAR. Chinese Physics C, 2008, 32(6): 463-469. doi: 10.1088/1674-1137/32/6/012
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[19]	Liu Bo , Zhao Weiqin . Rapidity Distribution of Negatively Charged Particles in RHIC. Chinese Physics C, 1991, 15(S2): 159-163.
[20]	Jiang Huanqing , Li Yangguo . Surface Production of η Particles in π-A Collisions. Chinese Physics C, 1988, 12(S4): 387-392.

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E. Prencipe. X Y Z particles at BABAR[J]. Chinese Physics C, 2010, 34(6): 644-649. doi: 10.1088/1674-1137/34/6/006

E. Prencipe. X Y Z particles at BABAR[J]. Chinese Physics C, 2010, 34(6): 644-649. doi: 10.1088/1674-1137/34/6/006 shu

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Received: 2010-01-25
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

X Y Z particles at BABAR

E. Prencipe ^,

Corresponding author: E. Prencipe,

LAPP - Laboratoire de Annecy de Physique de Particules, Annecy-le-Vieux, 74914, France

Received Date: 2010-01-25
Accepted Date: 1900-01-01
Available Online: 2010-06-05

Abstract:

This paper intends to shortly summarize the recent results on Spectroscopy, published from the BABAR Collaboration. The BABAR experiment is a B-factory, at SLAC, where asymmetric energy beams of electron-positron are accelerated and collide at the energy in the center of mass of Υ(4S). In 9 years of data taking, BABAR had collected 433 fb^－1 equivalent luminosity on-peak-data at the Υ(4S) energy, 30 fb^－1 data at the Υ(3S) energy, 15 fb^－1 data at the Υ(2S) energy, and a scan around Υ(4S) was done, collecting 25 pb^－1 every 5 MeV. Thanks to the high luminosity achieved, it is possible to perform high precision measurements, and spectroscopy studies. An update on the measurement of the state X(3872) will be given, as final result published by using the whole dataset available. Then, a new preliminary Y(4260) measurement is reported, and the study of the invariant mass J/ψ π⁺π^－ in ISR events is shown, where no evidence of the state Y(4050) is highlighted. As conclusion, the results on the angular distribution analysis performed on the state Z(4430) are reported.