Feasibility study of a J/ψ cross section measurement with early CMS data

YANG Zong-Chang; QIAN Si-Jin

doi:10.1088/1674-1137/33/8/002

Chinese Physics C> 2009, Vol. 33> Issue(8) : 609-616 DOI: 10.1088/1674-1137/33/8/002

Feasibility study of a J/ψ cross section measurement with early CMS data

YANG Zong-Chang ,
QIAN Si-Jin ^,

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Abstract：
We report the methods and plans for measuring the differential cross section of J/ψ→μ⁺μ^－ production, using data to be collected in the first LHC run by the CMS detector. Making use of the large B-hadron lifetime, we show how to separate the promptly produced J/ψ's from those coming from B-hadron decays. Since the J/ψ production cross section is expected to be large, the analysis should be viable with relatively small data sets, that will become available early in the startup of the LHC. We also address effects of a non-perfect detector alignment, as well as systematic uncertainties.
About 70 thousand J/ψ decays are reconstructed from Monte Carlo data, which corresponds to an integrated luminosity of 3 pb^－1 in 14 TeV collisions, in the range of p_t^J/ψ between 5 and 40 GeV/c. The precision of the result is limited by systematic uncertainties, and is at the 15% level.

References

[1]

Evans L, Bryant P (editors). Journal of Instrumentation, 2008, 3: S080012 Chatrchyan S et al. (CMS Collaboration). Journal of Instrumentation, 2008, 3: S080043 Brambilla N et al. CERN Yellow Report, CERN-2005-005 [hep-ph/0412158]4 Lansberg J P. Int. J. Mod. Phys. A, 2006, 21: 3857 [hepph/0602091]5 Kramer M. Prog. Part. Nucl. Phys., 2001, 47: 141 [hepph/0106120]6 Abe F et al. (CDF Collaboration). Phys. Rev. Lett., 1997, 79: 5727 Abe F et al. (CDF Collaboration). Phys. Rev. Lett., 1997, 79: 5788 CDF Collaboration. Phys. Rev. D, 2005, 71: 032001 [hepex/ 0412071]9 CDF Collaboration. Phys. Rev. Lett., 2007, 99: 132001 [arXiv:0704.0638]10 D0 Collaboration. Preliminary Result, Conference Note 5089-CONF, July 200711 Campbell J, Maltoni F, Tramontano F. Phys. Rev. Lett., 2007, 98: 25200212 Artoisenet P, Lansberg J P, Maltoni F. Phys. Lett. B, 2007, 653: 6013 Haberzettl H, Lansberg J P. Phys. Rev. Lett., 2008, 100: 03200614 Lansberg J P, Cudell J R, Kalinovsky Y L. Phys. Lett. B, 2006, 633: 30115 PYTHIA 6.409: Sjostrand T, Mrenna S, Skands P. JHEP, 2006, 0605: 02616 Bargiotti M, Vagnoni V. LHCb-2007-042 17 CMS Collaboration. The Trigger and Data Acquisition Project, Vol. II, CERN/LHCC 2002-02618 CMS Collaboration. CMS Physics: Technical Design Report Volume 1, CERN/LHCC 2006-00119 CDF Collaboration. Journal of Phys. G, 2007, 34: 2457 [hep-ex 0508029]20 BaBar Collaboration. Phys. Rev. D, 2003, 67: 032002 [hepex/0207097]

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[10]	LI Jia-Xing , LIU Ping-Ping , WANG Jian-Song , HU Zheng-Guo , MAO Rui-Shi , SUN Zhi-Yu , LI Chen , CHEN Ruo-Fu , XU Hu-Shan , XIAO Guo-Qing , GUO Zhong-Yan . Measurement of the total reaction cross section for the mirror nuclei ¹²N and ¹²B. Chinese Physics C, 2010, 34(4): 452-455. doi: 10.1088/1674-1137/34/4/006
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[13]	FANG Kai-Hong , XU Xiao-San , LAN Chang-Lin , YUAN Ji-Long , KONG Xiang-Zhong . Cross-section measurement for Ni(n,x)^58(m+g)Co,Ni(n, x)^60mCo, Ni(n,x)⁶¹Co and Ni(n,x)^62mCo reactions induced by neutrons around 14MeV. Chinese Physics C, 2008, 32(4): 251-253. doi: 10.1088/1674-1137/32/4/002
[14]	CHEN Kai , CUI Ming-Qi , ZHENG Lei . Transmission measurement of photo-absorption cross section of aluminum in soft X-ray region of 50 to 250eV. Chinese Physics C, 2008, 32(8): 673-676. doi: 10.1088/1674-1137/32/8/018
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[16]	MENG Xiang-Wei . Feasibility study for the measurement of B_c meson mass and lifetime with the general purpose detector at the LHC. Chinese Physics C, 2008, 32(2): 83-87. doi: 10.1088/1674-1137/32/2/001
[17]	Mao Guangjun , Zhao Enguang , Li Zhuxia , Zhuo Yizhong . In-medium △ Absorption Cross Section. Chinese Physics C, 1996, 20(S4): 387-390.
[18]	Wang Jicheng , Zhang Li , Guo guanghui , Zhao Jinhua , Zheng Jiwen . Cross-section Measurement of Neutron-Rich Hg Nuclides in Reaction of 28 MeV/u ¹⁸O with Thick Natural Lead Target. Chinese Physics C, 1995, 19(S3): 241-246.
[19]	Li Tingyan , Shi Zhaomin , Lu Hanlin , Zhao Wenrong , Yu Weixiang , Yuan Xialin . Cross Section Measurement and Evaluation for ⁵⁸Ni(n,p),⁶⁰Ni(n,p), ⁶²Ni(n,α) and ⁵⁴Fe(n,p) Reactions. Chinese Physics C, 1991, 15(S4): 341-351.
[20]	Wang Yongchang , Yuan Junqian , Ren Zhongliang , Wang Huamin , Yang Jingkang , Shui Yongqing , Xiang Sicang . Cross Section Measurement of the ⁶³Cu(n,α)⁶⁰Co Reaction. Chinese Physics C, 1991, 15(S1): 73-77.

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YANG Zong-Chang and QIAN Si-Jin. Feasibility study of a J/ψ cross section measurement with early CMS data[J]. Chinese Physics C, 2009, 33(8): 609-616. doi: 10.1088/1674-1137/33/8/002

YANG Zong-Chang and QIAN Si-Jin. Feasibility study of a J/ψ cross section measurement with early CMS data[J]. Chinese Physics C, 2009, 33(8): 609-616. doi: 10.1088/1674-1137/33/8/002 shu

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Received: 2008-11-24
Revised: 2008-12-18

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Feasibility study of a J/ψ cross section measurement with early CMS data

Corresponding author: QIAN Si-Jin,

Received Date: 2008-11-24

Accepted Date: 2008-12-18

Available Online: 2009-08-05

Abstract:

We report the methods and plans for measuring the differential cross section of J/ψ→μ⁺μ^－ production, using data to be collected in the first LHC run by the CMS detector. Making use of the large B-hadron lifetime, we show how to separate the promptly produced J/ψ's from those coming from B-hadron decays. Since the J/ψ production cross section is expected to be large, the analysis should be viable with relatively small data sets, that will become available early in the startup of the LHC. We also address effects of a non-perfect detector alignment, as well as systematic uncertainties.
About 70 thousand J/ψ decays are reconstructed from Monte Carlo data, which corresponds to an integrated luminosity of 3 pb^－1 in 14 TeV collisions, in the range of p_t^J/ψ between 5 and 40 GeV/c. The precision of the result is limited by systematic uncertainties, and is at the 15% level.

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Feasibility study of a J/ψ cross section measurement with early CMS data

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