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QCD radiation off heavy particles

Norrbin, E. LU and Sjöstrand, T. LU (2001) In Nuclear Physics B 603(1-2). p.297-342
Abstract

We study QCD radiation in decay processes involving heavy particles. As input, the first-order gluon emission rate is calculated in a number of reactions, and comparisons of the energy flow patterns show a non-negligible process dependence. To proceed further, the QCD parton shower language offers a convenient approach to include multi-gluon emission effects, and to describe exclusive event properties. An existing shower algorithm is extended to take into account the process-dependent mass, spin and parity effects, as given by the matrix element calculations. This allows an improved description of multiple gluon emission effects off b and t quarks, and also off nonstandard particles like squarks and gluinos. Phenomenological... (More)

We study QCD radiation in decay processes involving heavy particles. As input, the first-order gluon emission rate is calculated in a number of reactions, and comparisons of the energy flow patterns show a non-negligible process dependence. To proceed further, the QCD parton shower language offers a convenient approach to include multi-gluon emission effects, and to describe exclusive event properties. An existing shower algorithm is extended to take into account the process-dependent mass, spin and parity effects, as given by the matrix element calculations. This allows an improved description of multiple gluon emission effects off b and t quarks, and also off nonstandard particles like squarks and gluinos. Phenomenological applications are presented for bottom production at LEP, Higgs particle decay to heavy flavours, top production and decay at linear colliders, and some simple supersymmetric processes.

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author
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organization
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type
Contribution to journal
publication status
published
subject
keywords
12.38.Bx, 12.38.Cy, 13.65.+i, Heavy particles, Parton showers, QCD phenomenology, Radiation patterns, Supersymmetry events
in
Nuclear Physics B
volume
603
issue
1-2
pages
46 pages
publisher
North-Holland
external identifiers
  • scopus:0001805767
ISSN
0550-3213
DOI
10.1016/S0550-3213(01)00099-2
language
English
LU publication?
yes
id
4d5d9144-17a1-4825-b256-da4614b24804
date added to LUP
2019-04-29 23:15:01
date last changed
2020-12-29 01:00:40
@article{4d5d9144-17a1-4825-b256-da4614b24804,
  abstract     = {<p>We study QCD radiation in decay processes involving heavy particles. As input, the first-order gluon emission rate is calculated in a number of reactions, and comparisons of the energy flow patterns show a non-negligible process dependence. To proceed further, the QCD parton shower language offers a convenient approach to include multi-gluon emission effects, and to describe exclusive event properties. An existing shower algorithm is extended to take into account the process-dependent mass, spin and parity effects, as given by the matrix element calculations. This allows an improved description of multiple gluon emission effects off b and t quarks, and also off nonstandard particles like squarks and gluinos. Phenomenological applications are presented for bottom production at LEP, Higgs particle decay to heavy flavours, top production and decay at linear colliders, and some simple supersymmetric processes.</p>},
  author       = {Norrbin, E. and Sjöstrand, T.},
  issn         = {0550-3213},
  language     = {eng},
  month        = {06},
  number       = {1-2},
  pages        = {297--342},
  publisher    = {North-Holland},
  series       = {Nuclear Physics B},
  title        = {QCD radiation off heavy particles},
  url          = {http://dx.doi.org/10.1016/S0550-3213(01)00099-2},
  doi          = {10.1016/S0550-3213(01)00099-2},
  volume       = {603},
  year         = {2001},
}