Search for Anomalous Production of Events with a Photon, Jet, b-quark Jet, and Missing Transverse Energy

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Aaltonen , T , Mehtala , P , Orava , R , Maki , T , Saarikko , H , Osterberg , K & CDF Collaboration 2009 , ' Search for Anomalous Production of Events with a Photon, Jet, b-quark Jet, and Missing Transverse Energy ' , Physical Review D : Particles, Fields, Gravitation and Cosmology , vol. 80 , no. 5 , pp. 052003 . https://doi.org/10.1103/PhysRevD.80.052003

Title: Search for Anomalous Production of Events with a Photon, Jet, b-quark Jet, and Missing Transverse Energy
Alternative title: Search for Anomalous Production of Events with a Photon, Jet, b-quark Jet, and Missing Transverse Energy
Author: Aaltonen, T.; Mehtala, P.; Orava, R.; Maki, T.; Saarikko, H.; Osterberg, K.; CDF Collaboration
Contributor organization: Helsinki Institute of Physics
Particle Physics and Astrophysics
Date: 2009
Language: eng
Number of pages: 14
Belongs to series: Physical Review D : Particles, Fields, Gravitation and Cosmology
ISSN: 1550-7998
DOI: https://doi.org/10.1103/PhysRevD.80.052003
URI: http://hdl.handle.net/10138/24405
Abstract: We present a signature-based search for anomalous production of events containing a photon, two jets, of which at least one is identified as originating from a b quark, and missing transverse energy. The search uses data corresponding to 2.0/fb of integrated luminosity from p-pbar collisions at a center-of-mass energy of sqrt(s)=1.96 TeV, collected with the CDF II detector at the Fermilab Tevatron. From 6,697,466 events with a photon candidate with transverse energy ET> 25 GeV, we find 617 events with missing transverse energy > 25 GeV and two or more jets with ET> 15 GeV, at least one identified as originating from a b quark, versus an expectation of 607+- 113 events. Increasing the requirement on missing transverse energy to 50 GeV, we find 28 events versus an expectation of 30+-11 events. We find no indications of non-standard-model phenomena.We present a signature-based search for the anomalous production of events containing a photon, two jets, of which at least one is identified as originating from a b quark, and missing transverse energy (E̸T). The search uses data corresponding to 2.0  fb-1 of integrated luminosity from pp̅ collisions at a center-of-mass energy of √s=1.96  TeV, collected with the CDF II detector at the Fermilab Tevatron. From 6.697 47×106 events with a photon candidate with transverse energy ET>25  GeV, we find 617 events with E̸T>25  GeV and two or more jets with ET>15  GeV, at least one identified as originating from a b quark, versus an expectation of 607±113 events. Increasing the requirement on E̸T to 50 GeV, we find 28 events versus an expectation of 30±11 events. We find no indications of non-standard-model phenomena.
Description: Submitted to Phys. Rev. D
Subject: 114 Physical sciences
hep-ex
Peer reviewed: Yes
Usage restriction: restrictedAccess


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