Shift in the LHC Higgs diphoton mass peak from interference with background

The Higgs diphoton amplitude from gluon fusion at the LHC interferes with the continuum background induced by quark loops. I investigate the effect of this interference on the position of the diphoton invariant mass peak used to help determine the Higgs mass. At leading order, the interference shift...

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Bibliographic Details
Published in:Physical review. D, Particles, fields, gravitation, and cosmology Vol. 86; no. 7
Main Author: Martin, Stephen P.
Format: Journal Article
Language:English
Published: United States American Physical Society (APS) 01.10.2012
Subjects:
Amplitudes
Continuums
Cosmology
Gluons
Gravitation
Interference
Invariants
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Quarks
ISSN:1550-7998, 1550-2368
Online Access:Get full text
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Summary:The Higgs diphoton amplitude from gluon fusion at the LHC interferes with the continuum background induced by quark loops. I investigate the effect of this interference on the position of the diphoton invariant mass peak used to help determine the Higgs mass. At leading order, the interference shifts the peak towards lower mass by an amount of order 150 MeV or more, with the precise value dependent on the methods used to analyze and fit the data.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
FERMILAB-PUB-12-866-T
AC02-07CH11359
USDOE Office of Science (SC), High Energy Physics (HEP)
ISSN:1550-7998
1550-2368
DOI:10.1103/PhysRevD.86.073016