Alternative methods for measurement of the global polarization of Λ hyperons

  • We propose alternative methods for measurement of the global polarization of Λ hyperons. These methods involve event averages of proton and Λ momenta in the laboratory frame. We carry out simulations using these methods and show that all of them work equally well in obtaining the global polarization of Λ hyperons.
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Irfan Siddique, Zuo-tang Liang, Michael Annan Lisa, Qun Wang and Zhang-bu Xu. Alternative methods for measurement of the global polarization of Λ hyperons[J]. Chinese Physics C, 2019, 43(1): 014103. doi: 10.1088/1674-1137/43/1/014103
Irfan Siddique, Zuo-tang Liang, Michael Annan Lisa, Qun Wang and Zhang-bu Xu. Alternative methods for measurement of the global polarization of Λ hyperons[J]. Chinese Physics C, 2019, 43(1): 014103.  doi: 10.1088/1674-1137/43/1/014103 shu
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Received: 2018-08-25
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    IS and QW are Supported in part by the Major State Basic Research Development Program (MSBRD) in China (2015CB856902, 2014CB845402) and the National Natural Science Foundation of China (NSFC) (11535012)

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Alternative methods for measurement of the global polarization of Λ hyperons

  • 1. Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026, China;
  • 2. School of Physics & Key Laboratory of Particle Physics and Particle Irradiation(MOE);
  • 3. Physics Department, The Ohio State University, Columbus, Ohio 43210, USA;
  • 4. Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
Fund Project:  IS and QW are Supported in part by the Major State Basic Research Development Program (MSBRD) in China (2015CB856902, 2014CB845402) and the National Natural Science Foundation of China (NSFC) (11535012)

Abstract: We propose alternative methods for measurement of the global polarization of Λ hyperons. These methods involve event averages of proton and Λ momenta in the laboratory frame. We carry out simulations using these methods and show that all of them work equally well in obtaining the global polarization of Λ hyperons.

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