Search for new bottomonium-like state in Belle ϒ(5S) data

CHEN Hai-Yun; HE Xiong-Hong; SHEN Cheng-Ping

doi:10.7693/wl20150204

PHYSICS > 2015 > 44(02): 92-95. > DOI: 10.7693/wl20150204

CHEN Hai-Yun, HE Xiong-Hong, SHEN Cheng-Ping. Search for new bottomonium-like state in Belle ϒ(5S) data[J]. PHYSICS, 2015, 44(02): 92-95. DOI: 10.7693/wl20150204

Citation:

CHEN Hai-Yun, HE Xiong-Hong, SHEN Cheng-Ping. Search for new bottomonium-like state in Belle ϒ(5S) data[J]. PHYSICS, 2015, 44(02): 92-95. DOI: 10.7693/wl20150204

Citation:

CHEN Hai-Yun, HE Xiong-Hong, SHEN Cheng-Ping. Search for new bottomonium-like state in Belle ϒ(5S) data[J]. PHYSICS, 2015, 44(02): 92-95. DOI: 10.7693/wl20150204

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Search for new bottomonium-like state in Belle ϒ(5S) data

(1 School of Physics and Nuclear Energy Engineering,Beihang University,Beijing 100191,China)
(2 School of Physics,Peking University,Beijing 100871,China)

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Received Date: November 04, 2014
Published Date: February 11, 2015

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Abstract

Abstract

Using data samples collected with the Belle detector at the ϒ(5S) resonance,the e⁺e^－→π⁺π^－ϒ (nS) and π⁺π^－h_b (mP) (n=1，2，3，m=1，2) processes were investigated. Two charged bottomonium-like states Z_b(10610) and Z_b(10650) were observed in the π^±ϒ(nS) and π^±h_b (mP) invariant mass distributions. Since they decay into bottomonium states and are charged, they must have at least four quarks in their composition. Very recently, e⁺e^－→π⁺π^－π⁰ γ ϒ (1S) was also studied, and a search for the X(3872)-like state, X_b , was performed in the bottom sector.
- Z_b(10610),
- Z_b(10650),
- X(3872),
- X_b,
- bottomonium,
- bottomonium-like

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Search for new bottomonium-like state in Belle ϒ(5S) data

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