skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: D0 search for the Higgs boson in multijet events

Abstract

We present two searches for the Higgs boson in {radical}s = 1.96 TeV p{bar p} collisions using data taken with the D0 detector during Run II of the Fermilab Tevatron collider. The first study is a search for neutral Higgs bosons produced in association with bottom quarks. The cross sections for these processes are enhanced in many extensions of the standard model (SM), such as in its minimal supersymmetric extension at large tan {beta}. The results of our analysis agree with expectations from the SM, and we use our measurements to set upper limits on the production of neutral Higgs bosons in the mass range of 90 to 150 GeV. The second study is a search for the standard model Higgs boson produced in association with the Z boson.We study the p{bar p} {yields} ZH {yields} {nu}{bar {nu}}b{bar b} channel, which is one of the most sensitive ways to search for light Higgs bosons at the Tevatron. We select multijet events with large imbalance in transverse momentum and two b-tagged jets. Then we search for a peak in invariant mass distribution of two b-tagged jets. After subtracting the backgrounds, we set the 95% C.L. upper limits on the {sigma}(p{bar p}more » {yields} ZH {yields} {nu}{bar {nu}}) x BR(H {yields} b{bar b}) for Higgs masses between 105 and 135 GeV.« less

Authors:
;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
879025
Report Number(s):
FERMILAB-CONF-05-579-E
arXiv eprint number hep-ex/0601041; TRN: US200711%%417
DOE Contract Number:
AC02-76CH03000
Resource Type:
Conference
Resource Relation:
Journal Name: AIP Conf.Proc.842:690-692,2006; Conference: To appear in the proceedings of Particles and Nuclei International Conference (PANIC 05), Santa Fe, New Mexico, 24-28 Oct 2005
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CROSS SECTIONS; FERMILAB TEVATRON; HIGGS BOSONS; MASS DISTRIBUTION; NUCLEI; PRODUCTION; QUARKS; STANDARD MODEL; TRANSVERSE MOMENTUM; Experiment-HEP

Citation Formats

Melnitchouk, Alex, and /Mississippi U. D0 search for the Higgs boson in multijet events. United States: N. p., 2006. Web.
Melnitchouk, Alex, & /Mississippi U. D0 search for the Higgs boson in multijet events. United States.
Melnitchouk, Alex, and /Mississippi U. Sun . "D0 search for the Higgs boson in multijet events". United States. doi:. https://www.osti.gov/servlets/purl/879025.
@article{osti_879025,
title = {D0 search for the Higgs boson in multijet events},
author = {Melnitchouk, Alex and /Mississippi U.},
abstractNote = {We present two searches for the Higgs boson in {radical}s = 1.96 TeV p{bar p} collisions using data taken with the D0 detector during Run II of the Fermilab Tevatron collider. The first study is a search for neutral Higgs bosons produced in association with bottom quarks. The cross sections for these processes are enhanced in many extensions of the standard model (SM), such as in its minimal supersymmetric extension at large tan {beta}. The results of our analysis agree with expectations from the SM, and we use our measurements to set upper limits on the production of neutral Higgs bosons in the mass range of 90 to 150 GeV. The second study is a search for the standard model Higgs boson produced in association with the Z boson.We study the p{bar p} {yields} ZH {yields} {nu}{bar {nu}}b{bar b} channel, which is one of the most sensitive ways to search for light Higgs bosons at the Tevatron. We select multijet events with large imbalance in transverse momentum and two b-tagged jets. Then we search for a peak in invariant mass distribution of two b-tagged jets. After subtracting the backgrounds, we set the 95% C.L. upper limits on the {sigma}(p{bar p} {yields} ZH {yields} {nu}{bar {nu}}) x BR(H {yields} b{bar b}) for Higgs masses between 105 and 135 GeV.},
doi = {},
journal = {AIP Conf.Proc.842:690-692,2006},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share:
  • Le paysage de la physique des particules a subi des changements majeurs entre le début de cette thèse, en septembre 2010, et sa n en juin 2013. On peut notamment qualier l'année 2012 de date-clé dans l'histoire de la physique des particules. En 2012, une nouvelle particule a été découverte au LHC [1, 2], dont la majeure partie de la communauté s'accorde aujourd'hui à dire qu'il s'agit très probablement du boson de Higgs. Cet événement est intervenu peu après une sorte de passage de relais entre le Tevatron, arrêté le 30 septembre 2011, et le LHC, dont les toutes premièresmore » collisions sont intervenues le 23 novembre 2009.« less
  • We present two searches for the Higgs boson in {radical}(s) = 0.96 TeV pp(bar sign) collisions using data taken with the DO detector during Run II of the Fermilab Tevatron collider. The first study is a search for neutral Higgs bosons produced in association with bottom quarks. The cross sections for these processes are enhanced in many extensions of the standard model (SM), such as in its minimal supersymmetric extension at large tan{beta}. The results of our analysis agree with expectations from the SM, and we use our measurements to set upper limits on the production of neutral Higgs bosonsmore » in the mass range of 90 to 150 GeV.The second study is a search for the standard model Higgs boson produced in association with the Z boson. We study the pp(bar sign) {yields} ZH {yields} vv(bar sign)bb(bar sign) channel, which is one of the most sensitive ways to search for light Higgs bosons at the Tevatron. We select multijet events with large imbalance in transverse momentum and two b-tagged jets. Then we search for a peak in invariant mass distribution of two b-tagged jets. After subtracting the backgrounds, we set the 95% C.L. upper limits on the {sigma}(pp(bar sign) {yields} ZH {yields} vv(bar sign)) x BR(H {yields} bb(bar sign)) for Higgs masses between 105 and 135 GeV.« less
  • A search for the production of neutral Higgs bosons decaying into tau tau final states is presented. One of the two tau leptons is required to decay into a muon. The data were collected by the D0 detector and correspond to an integrated luminosity of about 1.0 fb-1. No excess is observed above the expected backgrounds. The results are interpreted in the Minimal Supersymmetric Standard Model. In the mass range 90<mA<200 GeV values of tan(beta) larger than 40-60 are excluded for the no-mixing and the mhmax benchmark scenarios.
  • We present combined searches for the low mass Standard Model Higgs boson at a center-of-mass energy of {radical}s = 1.96 TeV, using up to 5 fb{sup -1} of data collected with the D0 detector at the Fermilab Tevatron collider. The major contributing processes are associated production (WH {yields} lvbb, ZH {yields} vvbb, ZH {yields} llbb). The significant improvements across the full mass range resulting from the larger data sets and improved analyses as well as future prospects are discussed.