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Title: Search for new physics in lepton + photon + X events with 929 pb**(-1) of p anti-p collisions at s**(1/2) = 1.96-TeV

Abstract

The authors present results of a search at CDF in 929 {+-} 56 pb{sup -1} of p{bar p} collisions at 1.96 TeV for the anomalous production of events containing a high-transverse momentum charged lepton ({ell}, either e or {mu}) and photon ({gamma}), accompanied by missing transverse energy (E{sub T}), and/or additional leptons and photons, and jets (X). They use the same selection criteria as in a previous CDF Run I search, but with an order-magnitude larger data set, a higher p{bar p} collisions energy, and the CDF II detector. They find 163 {ell}{gamma}E{sub T} + X events, compared to an expectation of 150.6 {+-} 13.0 events. They observe 74 {ell}{ell}{gamma} + X events, compared to an expectation of 65.1 {+-} 7.7 events. They find no events similar to the Run II ee{gamma}{gamma}E{sub T} event.

Authors:
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Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
901120
Report Number(s):
FERMILAB-PUB-07-043-E
arXiv eprint number hep-ex/0702029; TRN: US0702518
DOE Contract Number:
AC02-07CH11359
Resource Type:
Journal Article
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; FERMILAB COLLIDER DETECTOR; LEPTONS; PHOTONS; PHYSICS; PRODUCTION; TRANSVERSE ENERGY; Experiment-HEP

Citation Formats

Abulencia, A., /Illinois U., Urbana, Adelman, J., /Chicago U., Affolder, T., /UC, Santa Barbara, Akimoto, T., /Tsukuba U., Albrow, M.G., /Fermilab, Ambrose, D., /Fermilab, Amerio, S., /Padua U., Amidei, D., /Michigan U., Anastassov, A., /Rutgers U., Piscataway, Anikeev, K., /Fermilab, Annovi, A., and /Frascati /Comenius U.. Search for new physics in lepton + photon + X events with 929 pb**(-1) of p anti-p collisions at s**(1/2) = 1.96-TeV. United States: N. p., 2007. Web.
Abulencia, A., /Illinois U., Urbana, Adelman, J., /Chicago U., Affolder, T., /UC, Santa Barbara, Akimoto, T., /Tsukuba U., Albrow, M.G., /Fermilab, Ambrose, D., /Fermilab, Amerio, S., /Padua U., Amidei, D., /Michigan U., Anastassov, A., /Rutgers U., Piscataway, Anikeev, K., /Fermilab, Annovi, A., & /Frascati /Comenius U.. Search for new physics in lepton + photon + X events with 929 pb**(-1) of p anti-p collisions at s**(1/2) = 1.96-TeV. United States.
Abulencia, A., /Illinois U., Urbana, Adelman, J., /Chicago U., Affolder, T., /UC, Santa Barbara, Akimoto, T., /Tsukuba U., Albrow, M.G., /Fermilab, Ambrose, D., /Fermilab, Amerio, S., /Padua U., Amidei, D., /Michigan U., Anastassov, A., /Rutgers U., Piscataway, Anikeev, K., /Fermilab, Annovi, A., and /Frascati /Comenius U.. Thu . "Search for new physics in lepton + photon + X events with 929 pb**(-1) of p anti-p collisions at s**(1/2) = 1.96-TeV". United States. doi:. https://www.osti.gov/servlets/purl/901120.
@article{osti_901120,
title = {Search for new physics in lepton + photon + X events with 929 pb**(-1) of p anti-p collisions at s**(1/2) = 1.96-TeV},
author = {Abulencia, A. and /Illinois U., Urbana and Adelman, J. and /Chicago U. and Affolder, T. and /UC, Santa Barbara and Akimoto, T. and /Tsukuba U. and Albrow, M.G. and /Fermilab and Ambrose, D. and /Fermilab and Amerio, S. and /Padua U. and Amidei, D. and /Michigan U. and Anastassov, A. and /Rutgers U., Piscataway and Anikeev, K. and /Fermilab and Annovi, A. and /Frascati /Comenius U.},
abstractNote = {The authors present results of a search at CDF in 929 {+-} 56 pb{sup -1} of p{bar p} collisions at 1.96 TeV for the anomalous production of events containing a high-transverse momentum charged lepton ({ell}, either e or {mu}) and photon ({gamma}), accompanied by missing transverse energy (E{sub T}), and/or additional leptons and photons, and jets (X). They use the same selection criteria as in a previous CDF Run I search, but with an order-magnitude larger data set, a higher p{bar p} collisions energy, and the CDF II detector. They find 163 {ell}{gamma}E{sub T} + X events, compared to an expectation of 150.6 {+-} 13.0 events. They observe 74 {ell}{ell}{gamma} + X events, compared to an expectation of 65.1 {+-} 7.7 events. They find no events similar to the Run II ee{gamma}{gamma}E{sub T} event.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Feb 01 00:00:00 EST 2007},
month = {Thu Feb 01 00:00:00 EST 2007}
}
  • The authors present results of a search in 929 {+-} 56 pb{sup -1} of p{bar p} collisions at 1.96 TeV for the anomalous production of events containing a charged lepton ({ell}, either e or {mu}) and a photon ({gamma}), both with high transverse momentum, accompanied by additional signatures, X, including missing transverse energy (E{sub T}) and additional leptons and photons. They use the same selection criteria as in the previous CDF Run I search, but with an order-magnitude larger data set, a higher p{bar p} collision energy, and the CDF II detector.
  • The authors present results of a search for anomalous production of events containing a charged lepton ({ell}, either e or {mu}) and a photon ({gamma}), both with high transverse momentum, accompanied by additional signatures, X, including missing transverse energy (E{sub T}) and additional leptons and photons. We use the same kinematic selection criteria as in a previous CDF search, but with a substantially larger data set, 305 pb{sup -1}, a p{bar p} collision energy of 1.96 TeV, and the upgraded CDF II detector. We find 42 {ell}{gamma}E{sub T} events versus a standard model expectation of 37.3 {+-} 5.4 events. Themore » level of excess observed in Run I, 16 events with an expectation of 7.6 {+-} 0.7 events (corresponding to a 2.7{sigma} effect), is not supported by the new data. In the signature of {ell}{ell}{gamma} + X we observe 31 events versus an expectation of 23.0 {+-} 2.7 events. In this sample we find no events with an extra photon or E{sub T} and so find no events like the one ee{gamma}{gamma}E{sub T} event observed in Run I.« less
  • We present results of a search at CDF in 929{+-}56 pb{sup -1} of pp collisions at 1.96 TeV for the anomalous production of events containing a high-transverse momentum charged lepton (l, either e or {mu}) and photon ({gamma}), accompanied by missing transverse energy (Ee{sub T}), and/or additional leptons and photons, and jets (X). We use the same selection criteria as in a previous CDF Run I search, but with an order-magnitude larger data set, a higher pp collision energy, and the CDF II detector. We find 163 l{gamma}Ee{sub T}+X events, compared to an expectation of 150.6{+-}13.0 events. We observe 74more » ll{gamma}+X events, compared to an expectation of 65.1{+-}7.7 events. We find no events similar to the Run I ee{gamma}{gamma}Ee{sub T} event.« less
  • We present results of a search for anomalous production of events containing a charged lepton (l, either e or {mu}) and a photon ({gamma}), both with high transverse momentum, accompanied by additional signatures X, including missing transverse energy (Ee{sub T}) and additional leptons and photons. We use the same selection criteria as in a previous CDF search but with a substantially larger data set, 305 pb{sup -1}, a pp collision energy of 1.96 TeV, and the CDF II detector. We find 42 l{gamma}Ee{sub T} events versus an expectation of 37.3{+-}5.4 events. We observe 31 ll{gamma}+X events versus an expectation ofmore » 23.0{+-}2.7 events. We find no events similar to the run I ee{gamma}{gamma}Ee{sub T} event.« less
  • No abstract prepared.