Spin correlations and new physics in τ -lepton decays at the LHC

Hayreter, Alper; Valencia, German

doi:10.1007/JHEP07(2015)174

Title: Spin correlations and new physics in τ -lepton decays at the LHC

Abstract

We use spin correlations to constrain anomalous τ -lepton couplings at the LHC including its anomalous magnetic moment, electric dipole moment and weak dipole moments. Single spin correlations are ideal to probe interference terms between the SM and new dipole-type couplings as they are not suppressed by the τ -lepton mass. Double spin asymmetries give rise to T -odd correlations useful to probe CP violation purely within the new physics amplitudes, as their appearance from interference with the SM is suppressed by m _τ. We compare our constraints to those obtained earlier on the basis of deviations from the Drell-Yan cross-section.

Authors:

Hayreter, Alper ^[1]; Valencia, German ^[2]

Ozyegin University, Istanbul (Turkey). Department of Natural and Mathematical Sciences
Iowa State Univ., Ames, IA (United States). Department of Physics

Publication Date:: Fri Jul 31 00:00:00 EDT 2015

Research Org.:: Iowa State University of Science and Technology, Ames, IA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1454768

Grant/Contract Number:: SC0009974

Resource Type:: Accepted Manuscript

Journal Name:: Journal of High Energy Physics (Online)

Additional Journal Information:: Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2015; Journal Issue: 7; Journal ID: ISSN 1029-8479

Publisher:: Springer Berlin

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Beyond Standard Model; CP violation; Effective field theories

Citation Formats


                    Hayreter, Alper, and Valencia, German. Spin correlations and new physics in τ -lepton decays at the LHC.  United States: N. p., 2015. 
Web.  doi:10.1007/JHEP07(2015)174.

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                    Hayreter, Alper, & Valencia, German. Spin correlations and new physics in τ -lepton decays at the LHC.  United States.  https://doi.org/10.1007/JHEP07(2015)174

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                    Hayreter, Alper, and Valencia, German. Fri .  
"Spin correlations and new physics in τ -lepton decays at the LHC".  United States.  https://doi.org/10.1007/JHEP07(2015)174.  https://www.osti.gov/servlets/purl/1454768.

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@article{osti_1454768,

  title        = {Spin correlations and new physics in τ -lepton decays at the LHC},

  author       = {Hayreter, Alper and Valencia, German},

  abstractNote = {We use spin correlations to constrain anomalous τ -lepton couplings at the LHC including its anomalous magnetic moment, electric dipole moment and weak dipole moments. Single spin correlations are ideal to probe interference terms between the SM and new dipole-type couplings as they are not suppressed by the τ -lepton mass. Double spin asymmetries give rise to T -odd correlations useful to probe CP violation purely within the new physics amplitudes, as their appearance from interference with the SM is suppressed by m τ. We compare our constraints to those obtained earlier on the basis of deviations from the Drell-Yan cross-section.},

  doi          = {10.1007/JHEP07(2015)174},

  journal      = {Journal of High Energy Physics (Online)},

  number       = 7,

  volume       = 2015,

  place        = {United States},

  year         = {Fri Jul 31 00:00:00 EDT 2015},

  month        = {Fri Jul 31 00:00:00 EDT 2015}

}

Copy to clipboard

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Works referencing / citing this record:

τ dipole moments via radiative leptonic τ decays
journal, March 2016

Eidelman, S.; Epifanov, D.; Fael, M.
Journal of High Energy Physics, Vol. 2016, Issue 3
DOI: 10.1007/jhep03(2016)140

Novel Method for the Direct Measurement of the $τ$ Lepton Dipole Moments
journal, July 2019

Fu, J.; Giorgi, M. A.; Henry, L.
Physical Review Letters, Vol. 123, Issue 1
DOI: 10.1103/physrevlett.123.011801

τ dipole moments via radiative leptonic τ decays
text, January 2016

Eidelman, S.; Passera, Massimo; Mercolli, Lorenzo
Springer
DOI: 10.7892/boris.86295

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Title: Spin correlations and new physics in τ -lepton decays at the LHC

Abstract

Citation Formats

Search for the electric dipole moment of the τ lepton journal, January 2003

MadGraph/MadEvent v4: the new web generation journal, September 2007

MadGraph 5: going beyond journal, June 2011

Model independent bounds on the tau lepton electromagnetic and weak magnetic moments journal, August 2000

Effective lagrangian analysis of new interactions and flavour conservation journal, May 1986

Review of Particle Physics journal, August 2014

Electric Dipole Moments book, January 1989

Simultaneous measurements of the t t ¯ , W + W − , and Z / γ * → τ τ production cross-sections in p p collisions at s = 7 TeV with the ATLAS detector journal, March 2015

CP violation and electric dipole moment at low energy τ-pair production journal, November 2004

Probing lepton gluonic couplings at the LHC journal, June 2012

τ weak dipole moments from azimuthal asymmetries journal, April 1999

The electric dipole moment of the tau journal, December 1990

FeynRules – Feynman rules made easy journal, September 2009

Study of tau-pair production in photon-photon collisions at LEP and limits on the anomalous electromagnetic moments of the tau lepton journal, June 2004

Tau spin correlations and the anomalous magnetic moment journal, January 2009

Dimension-six terms in the Standard Model Lagrangian journal, October 2010

Tau lepton charge asymmetry and new physics at the LHC journal, August 2011

Automatic generation of tree level helicity amplitudes journal, July 1994

The possibility of using a large heavy-ion collider for measuring the electromagnetic properties of the tau lepton journal, November 1991

τ-pair production via photon-photon collisions at the CERN e + e − collider LEP journal, February 1996

Four distinct tests for CP/T violation in e−e+ → τ−τ+ journal, September 1991

Search for anomalous weak dipole moments of the $\tau$ lepton journal, October 2003

Identification of b-quark jets with the CMS experiment journal, April 2013

τ dipole moments via radiative leptonic τ decays journal, March 2016

Novel Method for the Direct Measurement of the τ Lepton Dipole Moments journal, July 2019

τ dipole moments via radiative leptonic τ decays text, January 2016

Search for the electric dipole moment of the τ lepton
journal, January 2003

MadGraph/MadEvent v4: the new web generation
journal, September 2007

MadGraph 5: going beyond
journal, June 2011

Model independent bounds on the tau lepton electromagnetic and weak magnetic moments
journal, August 2000

Effective lagrangian analysis of new interactions and flavour conservation
journal, May 1986

Review of Particle Physics
journal, August 2014

Electric Dipole Moments
book, January 1989

Simultaneous measurements of the $t \bar{t}$ , $W^{+} W^{-}$ , and $Z / γ^{*} \to τ τ$ production cross-sections in $p p$ collisions at $\sqrt{s} = 7 TeV$ with the ATLAS detector
journal, March 2015

CP violation and electric dipole moment at low energy τ-pair production
journal, November 2004

Probing lepton gluonic couplings at the LHC
journal, June 2012

τ weak dipole moments from azimuthal asymmetries
journal, April 1999

The electric dipole moment of the tau
journal, December 1990

FeynRules – Feynman rules made easy
journal, September 2009

Study of tau-pair production in photon-photon collisions at LEP and limits on the anomalous electromagnetic moments of the tau lepton
journal, June 2004

Tau spin correlations and the anomalous magnetic moment
journal, January 2009

Dimension-six terms in the Standard Model Lagrangian
journal, October 2010

Tau lepton charge asymmetry and new physics at the LHC
journal, August 2011

Automatic generation of tree level helicity amplitudes
journal, July 1994

The possibility of using a large heavy-ion collider for measuring the electromagnetic properties of the tau lepton
journal, November 1991

τ-pair production via photon-photon collisions at the CERN $e^{+}$ $e^{-}$ collider LEP
journal, February 1996

Four distinct tests for CP/T violation in e−e+ → τ−τ+
journal, September 1991

Search for anomalous weak dipole moments of the $\tau$ lepton
journal, October 2003

Identification of b-quark jets with the CMS experiment
journal, April 2013

τ dipole moments via radiative leptonic τ decays
journal, March 2016

Novel Method for the Direct Measurement of the $τ$ Lepton Dipole Moments
journal, July 2019

τ dipole moments via radiative leptonic τ decays
text, January 2016