SwePub
Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "WFRF:(Corcoran P) "

Sökning: WFRF:(Corcoran P)

Sortera/gruppera träfflistan
   
NumreringReferensOmslagsbildHitta
1.
  • Abazov, V. M., et al. (författare)
  • Limits on anomalous trilinear gauge boson couplings from WW, WZ and Wγ production in pp- collisions at √s=1.96TeV
  • 2012
  • Ingår i: Physics Letters B. - 0370-2693 .- 1873-2445. ; 718:2, s. 451-459
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>We present searches for the anomalous γWW and ZWW trilinear gauge boson couplings from WW and WZ production using lepton plus dijet final states and a combination with results from Wγ, WW, and WZ production with leptonic final states. The analyzed data correspond to up to 8.6fb -1 of integrated luminosity collected by the D0 detector in pp- collisions at s=1.96TeV. We set the most stringent limits at a hadron collider to date assuming two different relations between the anomalous coupling parameters δκ γ, λ, and δg1Z for a cutoff energy scale Λ=2TeV. The combined 68% C.L. limits are -0.057&amp;lt;δκ γ&amp;lt;0.154, -0.015&amp;lt;λ&amp;lt;0.028, and -0.008&amp;lt;δg1Z&amp;lt;0.054 for the LEP parameterization, and -0.007&amp;lt;δκ&amp;lt;0.081 and -0.017&amp;lt;λ&amp;lt;0.028 for the equal couplings parameterization. We also present the most stringent limits of the W boson magnetic dipole and electric quadrupole moments.</p>
  •  
2.
  • Abazov, V. M., et al. (författare)
  • Measurement of the p(p)over-bar -&gt; W plus b plus X production cross section at root s=1.96 TeV D0 Collaboration
  • 2013
  • Ingår i: Physics Letters B. - 0370-2693 .- 1873-2445. ; 718:4-5, s. 1314-1320
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>We present a measurement of the cross section for W boson production in association with at least one b-quark jet in proton-antiproton collisions. The measurement is made using data corresponding to an integrated luminosity of 6.1fb-1 recorded with the D0 detector at the Fermilab Tevatron pp̄ Collider at s=1.96TeV. We measure an inclusive cross section of σ(W(→μν)+b+X)=1.04±0.05(stat.)±0.12(syst.) pb and σ(W(→eν)+b+X)=1.00±0.04(stat.)±0.12(syst.) pb in the phase space defined by pTν&amp;gt;25GeV, pTb-jet&amp;gt;20 GeV, |ηb-jet|&amp;lt;1.1, and a muon (electron) with pTℓ&amp;gt;20 GeV and |ημ|&amp;lt;1.7 (|ηe|&amp;lt;1.1 or 1.5&amp;lt;|ηe|&amp;lt;2.5). The combined result per lepton family is σ(W(→ℓν)+b+X)=1.05±0.12(stat.+syst.) pb for |ηℓ|&amp;lt;1.7. The results are in agreement with predictions from next-to-leading order QCD calculations using mcfm, σ(W+b){dot operator}B(W→ℓν)=1.34-0.34+0.41(syst.) pb, and also with predictions from the sherpa and madgraph Monte Carlo event generators.</p>
  •  
3.
  • Abazov, V. M., et al. (författare)
  • Double parton interactions in gamma+3 jet events in p(p)over-bar collisions at root s=1.96 TeV
  • 2010
  • Ingår i: Physical Review D. - 1550-7998. ; 81:5, s. 052012
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>We have used a sample of gamma + 3 jets events collected by the D0 experiment with an integrated luminosity of about 1 fb(-1) to determine the fraction of events with double parton scattering (f(DP)) in a single p (p) over bar collision at root s = 1.96 TeV. The DP fraction and effective cross section (sigma(eff)), a process-independent scale parameter related to the parton density inside the nucleon, are measured in three intervals of the second (ordered in p(T)) jet transverse momentum p(T)(jet2) within the range 15 &lt;= p(T)(jet2) &lt;= 30 GeV. In this range, f(DP) varies between 0.23 &lt;= f(DP) &lt;= 0.47, while sigma(eff) has the average value sigma(ave)(eff) = 16.4 +/- 0.3(stat) +/- 2.3(syst) mb.</p>
  •  
4.
  • Abazov, V. M., et al. (författare)
  • Evidence for an Anomalous Like-Sign Dimuon Charge Asymmetry
  • 2010
  • Ingår i: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 105:8, s. 081801
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>We measure the charge asymmetry A =(N++ -N--)/(N++ + N--) of like-sign dimuon events in 6.1 fb(-1) of p (p) over bar collisions recorded with the D0 detector at a center-of-mass energy root s = 1: 96 TeV at the Fermilab Tevatron collider. From A we extract the like-sign dimuon charge asymmetry in semileptonic b-hadron decays: A(sl)(b) = -0.009 57 +/- 0.00251(stat) +/- 0.001 46(sys). It differs by 3.2 standard deviations from the standard model prediction A(sl)(b)(SM) = (-2.3(-0.6)(+0.5)) x 10(-4), and provides first evidence of anomalous CP violation in the mixing of neutral B mesons.</p>
  •  
5.
  • Abazov, V. M., et al. (författare)
  • Evidence for an anomalous like-sign dimuon charge asymmetry
  • 2010
  • Ingår i: Physical Review D. - 1550-7998. ; 82:3, s. 032001
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>We measure the charge asymmetry A of like-sign dimuon events in 6.1 fb(-1) of p (p) over bar collisions recorded with the D0 detector at a center-of-mass energy root s = 1.96 TeV at the Fermilab Tevatron collider. From A, we extract the like-sign dimuon charge asymmetry in semileptonic b-hadron decays: A(sl)(b) = -0.00957 +/- 0.00251 (stat) +/- 0.00146 (syst). This result differs by 3.2 standard deviations from the standard model prediction A(sl)(b)(SM) = (-2.3(0.6)(+0.5)) x 10(-4) and provides first evidence of anomalous CP violation in the mixing of neutral B mesons.</p>
  •  
6.
  • Abazov, V. M., et al. (författare)
  • Measurement of direct photon pair production cross sections in p(p)over-bar collisions at root s=1.96 TeV
  • 2010
  • Ingår i: Physics Letters B. - 0370-2693 .- 1873-2445. ; 690:2, s. 108-117
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>We present a measurement of direct photon pair production cross sections using 4.2 fb(-1) of data collected with the DO detector at the Fermilab Tevatron p (p) over bar Collider. We measure single differential cross sections as a function of the diphoton mass, the transverse momentum of the diphoton system, the azimuthal angle between the photons, and the polar scattering angle of the photons. In addition, we measure double differential cross sections considering the last three kinematic variables in three diphoton mass bins. The results are compared with different perturbative QCD predictions and event generators. (C) 2010 Elsevier B.V. All rights reserved.</p>
  •  
7.
  • Abazov, V. M., et al. (författare)
  • Measurement of the combined rapidity and p(T) dependence of dijet azimuthal decorrelations in p(p)over-bar collisions at root s=1.96 TeV
  • 2013
  • Ingår i: Physics Letters B. - 0370-2693 .- 1873-2445. ; 721:4-5, s. 212-219
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>We present the first combined measurement of the rapidity and transverse momentum dependence of dijet azimuthal decorrelations, using the recently proposed quantity R-Delta phi. The variable R-Delta phi measures the fraction of the inclusive dijet events in which the azimuthal separation of the two jets with the highest transverse momenta is less than a specified value of the parameter Delta phi(max). The quantity R-Delta phi is measured in p (p) over bar collisions at root s = 1.96 TeV, as a function of the dijet rapidity interval, the total scalar transverse momentum, and Delta phi(max). The measurement uses an event sample corresponding to an integrated luminosity of 0.7 fb(-1) collected with the DO detector at the Fermilab Tevatron Collider. The results are compared to predictions of a perturbative QCD calculation at next-to-leading order in the strong coupling with corrections for non-perturbative effects. The theory predictions describe the data well, except in the kinematic region of large dijet rapidity intervals and small Delta phi(max).</p>
  •  
8.
  • Abazov, V. M., et al. (författare)
  • Measurement of the ratio of differential cross sections sigma(p(p)over-bar -&gt; Z + b jet)/sigma(p(p)over-bar -&gt; Z + jet) in p(p)over-bar collisions at root s = 1.96 TeV
  • 2013
  • Ingår i: Physical Review D. - 1550-7998 .- 1550-2368. ; 87:9, s. 092010
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>We measure the ratio of cross sections, sigma(p (p) over bar -&gt; Z + b jet)/sigma(p (p) over bar -&gt; Z + jet), for associated production of a Z boson with at least one jet. The ratio is also measured as a function of the Z boson transverse momentum, jet transverse momentum, jet pseudorapidity, and the azimuthal angle between the Z boson with respect to the highest p(T) b tagged jet. These measurements use data collected by the D0 experiment in Run II of Fermilab's Tevatron p (p) over bar Collider at a center-of-mass energy of 1.96 TeV, and correspond to an integrated luminosity of 9.7 fb(-1). The results are compared to predictions from next-to-leading order calculations and various Monte Carlo event generators.</p>
  •  
9.
  • Abazov, V. M., et al. (författare)
  • Measurement of the ratio of three-jet to two-jet cross sections in p(p)over-bar collisions at root s=1.96 TeV
  • 2013
  • Ingår i: Physics Letters B. - 0370-2693 .- 1873-2445. ; 720:1-3, s. 6-12
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>We present a measurement of the ratio of multijet cross sections in p (p) over barp collisions at root s = 1.96 TeV at the Fermilab Tevatron Collider. The measurement is based on a data set corresponding to an integrated luminosity of 0.7 fb(-1) collected with the DO detector. The ratio of the inclusive three-jet to two-jet cross sections, R-3/2, has been measured as a function of the jet transverse momenta. The data are compared to QCD predictions in different approximations. Popular tunes of the PYriiiA event generator do not agree with the data, while SHERPA provides a reasonable description of the data. A perturbative QCD prediction in next-to-leading order in the strong coupling constant, corrected for non-perturbative effects, gives a good description of the data.</p>
  •  
10.
  • Abazov, V. M., et al. (författare)
  • Measurement of the semileptonic charge asymmetry in B-0 meson mixing with the D0 detector
  • 2012
  • Ingår i: Physical Review D. - 1550-7998 .- 1550-2368. ; 86:7, s. 072009
  • Tidskriftsartikel (refereegranskat)abstract
    • <p>We present a measurement of the semileptonic mixing asymmetry for B-0 mesons, a(sl)(d), using two independent decay channels: B-0 -&gt; mu+D-X, with D- -&gt;! K+ pi(-) pi(-); and B-0 -&gt; mu+D*X-, with D*(-) -&gt; (D) over bar (0) pi(-), (D) over bar (-)(0) K+ pi(-) (and charge conjugate processes). We use a data sample corresponding to 10.4 fb(-1) of p (p) over bar collisions at root s = 1.96 TeV, collected with the D0 experiment at the Fermilab Tevatron collider. We extract the charge asymmetries in these two channels as a function of the visible proper decay length of the B-0 meson, correct for detector-related asymmetries using data-driven methods, and account for dilution from charge-symmetric processes using Monte Carlo simulation. The final measurement combines four signal visible proper decay length regions for each channel, yielding a(sl)(d) = [0.68 +/- 0: 45(stat) +/- 0.14(syst)]%. This is the single most precise measurement of this parameter, with uncertainties smaller than the current world average of B factory measurements.</p>
  •  
Skapa referenser, mejla, bekava och länka
Åtkomst
fritt online (13)
Typ av publikation
tidskriftsartikel (374)
konferensbidrag (1)
forskningsöversikt (1)
Typ av innehåll
refereegranskat (372)
övrigt vetenskapligt (5)
Författare/redaktör
Corcoran, M. (325)
Abbott, B., (315)
Brandt, A. (315)
Brock, R. (315)
Bernhard, R. (315)
Burdin, S. (315)
visa fler...
Adams, M. (315)
Alton, A. (315)
Askew, A. (315)
Avila, C. (315)
Bagby, L. (315)
Baldin, B. (315)
Bean, A. (315)
Bernardi, G. (315)
Beuselinck, R. (315)
Boehnlein, A. (315)
Bross, A. (315)
Buehler, M. (315)
Chandra, A. (315)
Choi, S. (315)
Choudhary, B. (315)
Claes, D. (315)
Cutts, D. (315)
Davies, G. (315)
Denisov, D. (315)
Desai, S. (315)
De La Cruz-Burelo, E ... (315)
Diesburg, M. (315)
Eads, M. (315)
Ellison, J. (315)
Fisher, W. (315)
Fox, H. (315)
Borissov, G. (314)
Buescher, V. (314)
Alkhazov, G. (314)
Barberis, E. (314)
Begalli, M. (314)
Bertram, I. (314)
Bhatnagar, V. (314)
Blazey, G. (314)
Blessing, S. (314)
Castilla-Valdez, H. (314)
Cooke, M. (314)
Das, A. (314)
Demina, R. (314)
Duperrin, A. (314)
Edmunds, D. (314)
Evans, H. (314)
Ferbel, T. (314)
Fortner, M. (314)
visa färre...
Lärosäte
Uppsala universitet (315)
Karolinska Institutet (47)
Göteborgs universitet (8)
Lunds universitet (3)
Kungliga Tekniska Högskolan (2)
Umeå universitet (1)
visa fler...
Stockholms universitet (1)
Chalmers tekniska högskola (1)
visa färre...
Språk
Engelska (376)
Forskningsämne (UKÄ/SCB)
Naturvetenskap (319)
Medicin och hälsovetenskap (11)

År

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy