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Title: Evidence for a particle produced in association with weak bosons and decaying to a bottom-antibottom quark pair in Higgs boson searches at the Tevatron

Abstract

We combine searches by the CDF and D0 Collaborations for the associated production of a Higgs boson with a W or Z boson and subsequent decay of the Higgs boson to a bottom-antibottom quark pair. The data, originating from Fermilab Tevatron p{bar p} collisions at {radical}s=1.96 TeV, correspond to integrated luminosities of up to 9.7 fb{sup -1}. The searches are conducted for a Higgs boson with mass in the range 100-150 GeV/c{sup 2}. We observe an excess of events in the data compared with the background predictions, which is most significant in the mass range between 120 and 135 GeV/c{sup 2}. The largest local significance is 3.3 standard deviations, corresponding to a global significance of 3.1 standard deviations. We interpret this as evidence for the presence of a new particle consistent with the standard model Higgs boson, which is produced in association with a weak vector boson and decays to a bottom-antibottom quark pair.

Authors:
; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1049391
Report Number(s):
FERMILAB-PUB-12-412-E
Journal ID: ISSN 0031-9007; PRLTAO; arXiv eprint number arXiv:1207.6436; TRN: US1204816
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Journal Name:
Phys.Rev.Lett.109:071804,2012
Additional Journal Information:
Journal Volume: 109; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BOSONS; COLLISIONS; DATA; DECAY; FERMILAB COLLIDER DETECTOR; FERMILAB TEVATRON; HIGGS BOSONS; MASS; PARTICLES; PARTICLE PRODUCTION; PROTON-ANTIPROTON INTERACTIONS; QUARKS; RANGE; STANDARD MODEL; Experiment-HEP

Citation Formats

Aaltonen, T, /Helsinki Inst. of Phys., Abazov, V M, /Dubna, JINR, Abbott, B, /Oklahoma U., Acharya, B S, /Tata Inst., Adams, M, /Illinois U., Chicago, Adams, T, /Florida State U., Alexeev, G D, /Dubna, JINR, Alkhazov, G, /St. Petersburg, INP, Alton, A, /Michigan U., Alvarez Gonzalez, B, /Oviedo U. /Cantabria Inst. of Phys., Alverson, G, and /Northeastern U. /INFN, Padua. Evidence for a particle produced in association with weak bosons and decaying to a bottom-antibottom quark pair in Higgs boson searches at the Tevatron. United States: N. p., 2012. Web. doi:10.1103/PhysRevLett.109.071804.
Aaltonen, T, /Helsinki Inst. of Phys., Abazov, V M, /Dubna, JINR, Abbott, B, /Oklahoma U., Acharya, B S, /Tata Inst., Adams, M, /Illinois U., Chicago, Adams, T, /Florida State U., Alexeev, G D, /Dubna, JINR, Alkhazov, G, /St. Petersburg, INP, Alton, A, /Michigan U., Alvarez Gonzalez, B, /Oviedo U. /Cantabria Inst. of Phys., Alverson, G, & /Northeastern U. /INFN, Padua. Evidence for a particle produced in association with weak bosons and decaying to a bottom-antibottom quark pair in Higgs boson searches at the Tevatron. United States. doi:10.1103/PhysRevLett.109.071804.
Aaltonen, T, /Helsinki Inst. of Phys., Abazov, V M, /Dubna, JINR, Abbott, B, /Oklahoma U., Acharya, B S, /Tata Inst., Adams, M, /Illinois U., Chicago, Adams, T, /Florida State U., Alexeev, G D, /Dubna, JINR, Alkhazov, G, /St. Petersburg, INP, Alton, A, /Michigan U., Alvarez Gonzalez, B, /Oviedo U. /Cantabria Inst. of Phys., Alverson, G, and /Northeastern U. /INFN, Padua. Sun . "Evidence for a particle produced in association with weak bosons and decaying to a bottom-antibottom quark pair in Higgs boson searches at the Tevatron". United States. doi:10.1103/PhysRevLett.109.071804.
@article{osti_1049391,
title = {Evidence for a particle produced in association with weak bosons and decaying to a bottom-antibottom quark pair in Higgs boson searches at the Tevatron},
author = {Aaltonen, T and /Helsinki Inst. of Phys. and Abazov, V M and /Dubna, JINR and Abbott, B and /Oklahoma U. and Acharya, B S and /Tata Inst. and Adams, M and /Illinois U., Chicago and Adams, T and /Florida State U. and Alexeev, G D and /Dubna, JINR and Alkhazov, G and /St. Petersburg, INP and Alton, A and /Michigan U. and Alvarez Gonzalez, B and /Oviedo U. /Cantabria Inst. of Phys. and Alverson, G and /Northeastern U. /INFN, Padua},
abstractNote = {We combine searches by the CDF and D0 Collaborations for the associated production of a Higgs boson with a W or Z boson and subsequent decay of the Higgs boson to a bottom-antibottom quark pair. The data, originating from Fermilab Tevatron p{bar p} collisions at {radical}s=1.96 TeV, correspond to integrated luminosities of up to 9.7 fb{sup -1}. The searches are conducted for a Higgs boson with mass in the range 100-150 GeV/c{sup 2}. We observe an excess of events in the data compared with the background predictions, which is most significant in the mass range between 120 and 135 GeV/c{sup 2}. The largest local significance is 3.3 standard deviations, corresponding to a global significance of 3.1 standard deviations. We interpret this as evidence for the presence of a new particle consistent with the standard model Higgs boson, which is produced in association with a weak vector boson and decays to a bottom-antibottom quark pair.},
doi = {10.1103/PhysRevLett.109.071804},
journal = {Phys.Rev.Lett.109:071804,2012},
issn = {0031-9007},
number = ,
volume = 109,
place = {United States},
year = {2012},
month = {7}
}