Published May 2008 | Version v1
Journal article Metadata-only

Influence of graviton on top-antitop production at the LHC

Creators

  • 1. Institute of Experimental and Applied Physics, Czech Technical University in Prague, Horska 3a/22, 128 00, Prague 2 (Czech Republic)
  • 2. High Energy Physics Division, Department of Physical Sciences, University of Helsinki and Helsinki Institute of Physics, PO Box 64, 00014, Helsinki (Finland)
  • 3. Theory Division, KEK, Tsukuba, Ibaraki 305-0801 (Japan)
  • 4. Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering, Brehova 7, 115 19, Prague 1 (Czech Republic)

Description

We examine the top quark production in the brane world scenario. We study two typical models - the model proposed by Arkani-Hamed, Dimopoulos and Dvali (ADD) and the model of Randall and Sundrum (RS). In addition to the Standard Model processes, there is a new contribution to the top-antitop pair production process mediated by graviton Kaluza-Klein modes in the s-channel. We calculated the density matrix for the top-antitop pair production including the new contribution. With a reasonable parameter choice, we find a sizable deviation of the top-antitop quark spin correlations from those in the Standard Model

Availability note (English)

Available from http://dx.doi.org/10.1088/1742-6596/110/7/072040

Additional details

Identifiers

DOI
10.1088/1742-6596/110/7/072040;

Publishing Information

Journal Title
Journal of Physics. Conference Series (Online)
Journal Volume
110
Journal Issue
7
Journal Page Range
[3 p.]
ISSN
1742-6596

Conference

Title
2007 Europhysics conference on high energy physics
Dates
19-25 Jul 2007
Place
Manchester (United Kingdom)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
40029631
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BRANES; CERN LHC; CORRELATIONS; DENSITY MATRIX; GRAVITONS; KALUZA-KLEIN THEORY; PAIR PRODUCTION; S CHANNEL; SPIN; STANDARD MODEL; T QUARKS
Descriptors DEC
ACCELERATORS; ANGULAR MOMENTUM; CYCLIC ACCELERATORS; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; GRAND UNIFIED THEORY; GRAVITATIONAL RADIATION; INTERACTIONS; MASSLESS PARTICLES; MATHEMATICAL MODELS; MATRICES; PARTICLE MODELS; PARTICLE PRODUCTION; PARTICLE PROPERTIES; POSTULATED PARTICLES; QUANTUM FIELD THEORY; QUARKS; RADIATIONS; STORAGE RINGS; SYNCHROTRONS; TOP PARTICLES; UNIFIED GAUGE MODELS; UNIFIED-FIELD THEORIES