Feasibility study on cross-section measurement of Υ(1S)→μ<SUP>+</SUP>μ<SUP>－</SUP> by using early CMS data

GUO Shuang; HU Zhen; QIAN Si-Jin; YANG Zong-Chang; LIU Lie

doi:10.1088/1674-1137/34/8/001

Chinese Physics C> 2010, Vol. 34> Issue(8) : 1037-1044 DOI: 10.1088/1674-1137/34/8/001

Feasibility study on cross-section measurement of Υ(1S)→μ⁺μ^－ by using early CMS data

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Abstract：
One of the first physics results that CMS will hopefully obtain will be the analysis of heavy quarkonium productions, including the Υ cross-section measurement. Since the Υ production cross-section from p-p collisions is expected to be relatively large, the analysis should be viable with rather small datasets which will be available soon after the start-up of the LHC. This paper describes the methods and plans for measuring the differential cross-section of Υ (1S)→μ⁺μ^－ production, by using data to be collected from the CMS detector in the first LHC run. In this study, about 80 thousand Υ are reconstructed corresponding to an integrated luminosity of 6.4 pb^－1 in 10 TeV proton-proton collisions by using Monte Carlo data. The precision of this measurement is estimated to be about 16%, which is limited by the systematic errors.

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GUO Shuang, HU Zhen, QIAN Si-Jin, YANG Zong-Chang and LIU Lie. Feasibility study on cross-section measurement of Υ(1S)→μ⁺μ^－ by using early CMS data[J]. Chinese Physics C, 2010, 34(8): 1037-1044. doi: 10.1088/1674-1137/34/8/001

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Received: 2009-10-20
Revised: 2009-11-18

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Feasibility study on cross-section measurement of Υ(1S)→μ⁺μ^－ by using early CMS data

Corresponding author: QIAN Si-Jin,

Received Date: 2009-10-20
Accepted Date: 2009-11-18
Available Online: 2010-08-05

Abstract:

One of the first physics results that CMS will hopefully obtain will be the analysis of heavy quarkonium productions, including the Υ cross-section measurement. Since the Υ production cross-section from p-p collisions is expected to be relatively large, the analysis should be viable with rather small datasets which will be available soon after the start-up of the LHC. This paper describes the methods and plans for measuring the differential cross-section of Υ (1S)→μ⁺μ^－ production, by using data to be collected from the CMS detector in the first LHC run. In this study, about 80 thousand Υ are reconstructed corresponding to an integrated luminosity of 6.4 pb^－1 in 10 TeV proton-proton collisions by using Monte Carlo data. The precision of this measurement is estimated to be about 16%, which is limited by the systematic errors.

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Feasibility study on cross-section measurement of Υ(1S)→μ⁺μ^－ by using early CMS data

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Feasibility study on cross-section measurement of Υ(1S)→μ⁺μ^－ by using early CMS data

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Feasibility study on cross-section measurement of Υ(1S)→μ+μ－ by using early CMS data

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Feasibility study on cross-section measurement of Υ(1S)→μ+μ－ by using early CMS data

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Feasibility study on cross-section measurement of Υ(1S)→μ⁺μ^－ by using early CMS data

Feasibility study on cross-section measurement of Υ(1S)→μ⁺μ^－ by using early CMS data