Springer Theses

Longitudinal Double-Spin Asymmetry of Electrons from Heavy Flavor Decays in Polarized p + p Collisions at √s = 200 GeV

Authors: Nakamura, Katsuro

  • Provides the detailed current states of the gluon polarization measurement, including recent results from the PHENIX and STAR experiment and the global analysis of the DSSV group
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  • Introduces the options of rejecting and estimating the photonic electron background using the Hadron Blind Detector.
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  • Provides the world-first result of double-spin asymmetry of electrons from heavy flavor decays in proton–proton collisions and the constraint of the gluon-polarized parton-distribution function in the small Bjorken x region
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  • Nominated as an outstanding contribution by Kyoto University's Physics Department in 2013
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Hardcover $129.00
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  • Due: November 11, 2016
  • ISBN 978-4-431-56368-6
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About this book

In this thesis, the measurement of double-spin asymmetry for electron production from heavy flavor decays was performed in a Relativistic Heavy Ion Collider (RHIC) in the PHENIX experiment at Brookhaven National Laboratory to measure the polarized parton distribution function of gluon in the small Bjorken x region (x~0.01).

 

For this experiment, for the first time a Hadron Blind Detector (HBD), which is a position-sensitive gas Cherenkov counter with Gas Electron Multiplier whose surface is evaporated by CsI, was employed. This HBD contributes to reducing the background from electron pairs produced by real and virtual photon conversion. Furthermore, the author develops a new analysis method for the background reduction, and the signal-to-background ratio is improved by a factor of roughly 2.0. Using the combination of the HBD and a new analysis method, the double-spin asymmetry of the electron production with transverse momentum ranging 0.5 < pT < 3.0 GeV/c is measured and confirmed to be zero-consistent within the limit of the statistical uncertainty of about 1%. This result identifies the constraint of the gluon polarization in the small Bjorken x region, a worldwide first.

About the authors

Dr. Katsuro Nakamura Kyoto University

Table of contents (6 chapters)

Buy this book

eBook $99.00
price for USA (gross)
  • ISBN 978-4-431-54616-0
  • Digitally watermarked, DRM-free
  • Included format: PDF, EPUB
  • ebooks can be used on all reading devices
  • Immediate eBook download after purchase
Hardcover $129.00
price for USA
  • ISBN 978-4-431-54615-3
  • Free shipping for individuals worldwide
  • Usually dispatched within 3 to 5 business days.
Softcover $129.00
price for USA
  • Customers within the U.S. and Canada please contact Customer Service at 1-800-777-4643, Latin America please contact us at +1-212-460-1500 (Weekdays 8:30am – 5:30pm ET) to place your order.
  • Due: November 11, 2016
  • ISBN 978-4-431-56368-6
  • Free shipping for individuals worldwide
Rent the ebook  
  • Rental duration: 1 or 6 month
  • low-cost access
  • online reader with highlighting and note-making option
  • can be used across all devices
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Bibliographic Information

Bibliographic Information
Book Title
Longitudinal Double-Spin Asymmetry of Electrons from Heavy Flavor Decays in Polarized p + p Collisions at √s = 200 GeV
Authors
Series Title
Springer Theses
Copyright
2014
Publisher
Springer Japan
Copyright Holder
Springer Japan
eBook ISBN
978-4-431-54616-0
DOI
10.1007/978-4-431-54616-0
Hardcover ISBN
978-4-431-54615-3
Softcover ISBN
978-4-431-56368-6
Series ISSN
2190-5053
Edition Number
1
Number of Pages
XVI, 141
Number of Illustrations and Tables
63 b/w illustrations, 31 illustrations in colour
Topics