D0-D0 mixing sensitivity estimation at Belle Ⅱ in wrong-sign decays D0&rarr;K+&pi;-&pi;0 via time-dependent amplitude analysis

Long-Ke Li; Ye-Qi Chen; Wen-Biao Yan; Zi-Ping Zhang

doi:10.1088/1674-1137/41/2/023001

Chinese Physics C> 2017, Vol. 41> Issue(2) : 023001 DOI: 10.1088/1674-1137/41/2/023001

D⁰-D⁰ mixing sensitivity estimation at Belle Ⅱ in wrong-sign decays D⁰→K⁺π^-π⁰ via time-dependent amplitude analysis

1.
University of Science and Technology of China, Hefei 230026, China

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Abstract：
The sensitivity of the D⁰-D⁰ mixing parameters x and y is estimated in the wrong-sign decay D⁰→K⁺π^-π⁰ by time-dependent amplitude analysis. The resolution of the D⁰ lifetime is essential in time-dependent Dalitz analyses. The Belle Ⅱ detector, which aims to collect a total integrated luminosity of 50 ab^-1 of data, has σ=140 fs in Monte Carlo studies, a factor of two improvement over that of Belle and BaBar, so the produced Dalitz signal Monte Carlo samples are smeared with this resolution. Then a time-dependent Dalitz plot fitting is performed on these smeared samples, and the sensitivity of D⁰-D⁰ mixing parameters are σ_x=0.057% and σ_y=0.049%. These are about an order of magnitude improvement on current experimental results, without considering background effects.
- D0-D0 mixing ,
- sensitivity estimation ,
- time-dependent amplitude analysis ,
- wrong-sign decay ,
- Belle Ⅱ

References

[1]	K. A. Olive et al (Particle Data Group), Chin. Phys. C, 38:090001 (2014)
[2]	Xing Zhi-Zhong, Chin. Phys. C, 32:483-487 (2008)
[3]	S. L. Glashow, J. Iliopoulos, and L. Maiani, Phys. Rev. D, 2:1285(1970)
[4]	A. F. Falk et al, Phys. Rev. D, 65:054034(2002)
[5]	R. Aaij et al (LHCb Collaboration), Phys. Rev. Lett., 111:241801(2013)
[6]	T. Aaltonen et al (CDF Collaboration), Phys. Rev. Lett., 111:231802(2013)
[7]	B. R. Ko et al (Belle Collaboration), Phys. Rev. Lett., 112:111801(2014)
[8]	R. Aaij et al (LHCb Collaboration), Phys. Rev. Lett., 116:241801(2016)
[9]	B. Aubert et al (BaBar Collaboration), Phys. Rev. Lett., 103:211801(2009)
[10]	Botjan Golob, Karim Trabelsi, and Philip Urquijo, BELLE2-NOTE-0021
[11]	X. C. Tian et al (Belle Collaboration), Phys. Rev. Lett., 95:231801(2005)
[12]	S. Kopp et al (CLEO Collaboration), Phys. Rev. D, 63:092001(2001)
[13]	Charles Zemach, Phys. Rev., 133:B1201(1964); Charles Zemach, Phys. Rev., 140:B109(1965)
[14]	T. Peng et al (Belle Collaboration), Phys. Rev. D, 89:091103(R) (2014)
[15]	T. Abe et al KEK Report 2010-1, arXiv:1011.0352[physics.ins-det]
[16]	G. Casarosa, Belle Ⅱ Decay Time Resolution, Presented at the 2nd Belle Ⅱ Theory Interface Platform Workshop (Krakow, April 2015)
[17]	D. J. Lange, Nucl. Instrum. Methods A, 462:152-155 (2001)
[18]	L. K. Li, W. B. Yan, and Z. P. Zhang, Belle Note 1381
[19]	M. Pelliccioni, Measurement of D0-D0 Mixing with a Time-Dependent Amplitude Analysis of D0K+-0, SLAC-R-1017, Ph. D. Thesis (SLAC National Accelerator Laboratory, Stanford University, Stanford CA 94309, 2009)

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[6]	WANG Zhi-Gang . Analysis of the coupling constants g_a0_ηπ0 and g_a0_η′π0 with light-cone QCD sum rules. Chinese Physics C, 2010, 34(1): 7-15. doi: 10.1088/1674-1137/34/1/002
[7]	M. Bischofberger (for the Belle collaboration) . Rare decays of the tau lepton at Belle. Chinese Physics C, 2010, 34(6): 902-906. doi: 10.1088/1674-1137/34/6/048
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[10]	ZHAO Li , ZHANG Zi-Ping (for the Belle collaboration) . D⁰-D⁰ mixing and other charm decays at Belle. Chinese Physics C, 2010, 34(6): 774-779. doi: 10.1088/1674-1137/34/6/027
[11]	LI Hai-Bo , YANG Mao-Zhi . About detecting CP-violating processes in J/ψ→K⁰K⁰ decay. Chinese Physics C, 2009, 33(2): 85-88. doi: 10.1088/1674-1137/33/2/001
[12]	B. Golob (for the Belle Collaboration) . Study of D_s^±→μ^±ν_μ at Belle. Chinese Physics C, 2008, 32(6): 495-498. doi: 10.1088/1674-1137/32/6/018
[13]	HUANG Bin , ZHENG Yang-Heng , LI Wei-Dong . A simulation study on the measurement of D⁰-D⁰ mixing parameter y at BESⅢ. Chinese Physics C, 2008, 32(12): 945-951. doi: 10.1088/1674-1137/32/12/002
[14]	A.J.Schwartz . Measurements of D⁰-D⁰ mixing and searches for CP violation: HFAG combination of all data. Chinese Physics C, 2008, 32(6): 477-482. doi: 10.1088/1674-1137/32/6/014
[15]	XING Zhi-Zhong . An overview of D⁰-D⁰ mixing and CP violation. Chinese Physics C, 2008, 32(6): 483-487. doi: 10.1088/1674-1137/32/6/015
[16]	LI Hai-Bo . D⁰-D⁰ mixing and CP violation at BES-Ⅲ. Chinese Physics C, 2008, 32(6): 470-476. doi: 10.1088/1674-1137/32/6/013
[17]	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
[18]	SUN Yong-Zhao , HE Kang-Lin , LI Wei-Dong , BIAN Jian-Ming , CAO Guo-Fu , DENG Zi-Yan , HE Miao , HUANG Bin , JI Xiao-Bin , LI Gang , LI Hai-Bo , LIU Chun-Xiu , LIU Hua , , , . Search for D⁰-D⁰ Mixing with Double-Layer TOF at BESⅢ. Chinese Physics C, 2007, 31(5): 423-430.
[19]	BES Callaboration . Decay of the J/ψ to Σ⁰Σ⁰ Final State. Chinese Physics C, 2002, 26(2): 93-99.
[20]	LIU Liang-Gang . ρ⁰-ω Mixing Effect in the (ρ⁰,ω)→e⁺e^－ Pair Decay. Chinese Physics C, 1993, 17(7): 614-618.

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Long-Ke Li, Ye-Qi Chen, Wen-Biao Yan and Zi-Ping Zhang. D⁰-D⁰ mixing sensitivity estimation at Belle Ⅱ in wrong-sign decays D⁰→K⁺π^-π⁰ via time-dependent amplitude analysis[J]. Chinese Physics C, 2017, 41(2): 023001. doi: 10.1088/1674-1137/41/2/023001

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Received: 2016-09-21
Revised: 2016-10-14

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Supported by National Natural Science Foundation of China (11475164, 11475169, 11675166)

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

D⁰-D⁰ mixing sensitivity estimation at Belle Ⅱ in wrong-sign decays D⁰→K⁺π^-π⁰ via time-dependent amplitude analysis

Corresponding author: Long-Ke Li,

Corresponding author: Ye-Qi Chen,

Corresponding author: Wen-Biao Yan,

Corresponding author: Zi-Ping Zhang,

1. University of Science and Technology of China, Hefei 230026, China

Received Date: 2016-09-21

Accepted Date: 2016-10-14

Available Online: 2017-02-05

Fund Project: Supported by National Natural Science Foundation of China (11475164, 11475169, 11675166)

Abstract: The sensitivity of the D⁰-D⁰ mixing parameters x and y is estimated in the wrong-sign decay D⁰→K⁺π^-π⁰ by time-dependent amplitude analysis. The resolution of the D⁰ lifetime is essential in time-dependent Dalitz analyses. The Belle Ⅱ detector, which aims to collect a total integrated luminosity of 50 ab^-1 of data, has σ=140 fs in Monte Carlo studies, a factor of two improvement over that of Belle and BaBar, so the produced Dalitz signal Monte Carlo samples are smeared with this resolution. Then a time-dependent Dalitz plot fitting is performed on these smeared samples, and the sensitivity of D⁰-D⁰ mixing parameters are σ_x=0.057% and σ_y=0.049%. These are about an order of magnitude improvement on current experimental results, without considering background effects.

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D⁰-D⁰ mixing sensitivity estimation at Belle Ⅱ in wrong-sign decays D⁰→K⁺π^-π⁰ via time-dependent amplitude analysis

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D⁰-D⁰ mixing sensitivity estimation at Belle Ⅱ in wrong-sign decays D⁰→K⁺π^-π⁰ via time-dependent amplitude analysis

Corresponding author: Long-Ke Li,

Corresponding author: Ye-Qi Chen,

Corresponding author: Wen-Biao Yan,

Corresponding author: Zi-Ping Zhang,

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