Z degree yields hadrons in SDC

PDF Version Also Available for Download.

Description

We report on a study of hadronic Z{degrees} decays at high P{sub t}(P{sub t}>500 GeV/c), at 40 TeV CM energy. Our goal here is to understand the effects of the kinematics of Z{degrees} decay, especially the Lorentz boost, on detection issues. We used an ISAJET sample of Drell Yan events, requiring the Z{degrees} to have pseudorapidity ({eta}) in (-1.5,1.5) and P{sub t}>500 GeV/c. ISAJET forces the Z{degrees} to decay to two primary partons, which then cascade by gluon and quark emission to stable hadrons. We excluded Z{degrees} {yields} {nu}{bar {nu}} decays. In about 10% of the hadronic decays, significant energy ... continued below

Physical Description

Pages: (12 p)

Creation Information

Wicklund, A.B. August 30, 1991.

Context

This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this report can be viewed below.

Who

People and organizations associated with either the creation of this report or its content.

Sponsor

Publisher

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

What

Descriptive information to help identify this report. Follow the links below to find similar items on the Digital Library.

Description

We report on a study of hadronic Z{degrees} decays at high P{sub t}(P{sub t}>500 GeV/c), at 40 TeV CM energy. Our goal here is to understand the effects of the kinematics of Z{degrees} decay, especially the Lorentz boost, on detection issues. We used an ISAJET sample of Drell Yan events, requiring the Z{degrees} to have pseudorapidity ({eta}) in (-1.5,1.5) and P{sub t}>500 GeV/c. ISAJET forces the Z{degrees} to decay to two primary partons, which then cascade by gluon and quark emission to stable hadrons. We excluded Z{degrees} {yields} {nu}{bar {nu}} decays. In about 10% of the hadronic decays, significant energy is lost due to neutrino emission from heavy quarks, so that the hadronic mass is significantly less than the Z{degrees} mass generated; these events were not explicitly removed. We treated muons like other hadrons, assuming that high P{sub t} muons could be identified and corrected for. For this study we retained only the stable daughter particles in Z{degrees} decay, labelled according to their parton parentage ( Jet 1 or 2''). We ignored the particles from the underlying event and from other final state jets. (These contributions, along with other non-Z{degrees} noise'', can be explicitly added back for relevant studies.) Finally, we note that the Z{degrees} decay angular distribution is approximately flat for these events, not peaked at 90 deg. as in Higgs {yields} Z{degrees}Z{degrees}; this will have little effect on our conclusions. To avoid very asymmetric decays, we required each of the two jets to satisfy P{sub t}> 100 GeV/c.

Physical Description

Pages: (12 p)

Notes

OSTI; NTIS; INIS; GPO Dep.

Language

Item Type

Identifier

Unique identifying numbers for this report in the Digital Library or other systems.

  • Other: DE92000294
  • Report No.: ANL-HEP-TR-91-74
  • Report No.: SDC--91-00081
  • Grant Number: W-31109-ENG-38
  • DOI: 10.2172/5255022 | External Link
  • Office of Scientific & Technical Information Report Number: 5255022
  • Archival Resource Key: ark:/67531/metadc1071357

Collections

This report is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

What responsibilities do I have when using this report?

When

Dates and time periods associated with this report.

Creation Date

  • August 30, 1991

Added to The UNT Digital Library

  • Feb. 4, 2018, 10:51 a.m.

Description Last Updated

  • April 17, 2018, 3:39 p.m.

Usage Statistics

When was this report last used?

Yesterday: 0
Past 30 days: 1
Total Uses: 1

Interact With This Report

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

International Image Interoperability Framework

IIF Logo

We support the IIIF Presentation API

Wicklund, A.B. Z degree yields hadrons in SDC, report, August 30, 1991; Illinois. (https://digital.library.unt.edu/ark:/67531/metadc1071357/: accessed March 21, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.