J. Clutter

Search for Diphoton Events with Large Missing Transverse Energy in 6.3 fb(-1) of p(p)over-bar Collisions at root s=1.96 TeV

We report a search for diphoton events with large missing transverse energy produced in pp collisions at √s=1.96  TeV. The data were collected with the D0 detector at the Fermilab Tevatron Collider and correspond to 6.3  fb(-1) of integrated luminosity. The observed missing transverse energy distribution is well described by the standard model prediction, and 95% C.L. limits are derived on two realizations of theories beyond the standard model. In a gauge-mediated supersymmetry breaking scenario, the breaking scale Λ is excluded for Λ<124  TeV. In a universal extra dimension model including gravitational decays, the compactification radius R(c) is excluded for R(c)(-1)<477  GeV.

Search for Resonant Pair Production of Neutral Long-Lived Particles Decaying to bb in pp Collisions at √ s = 1.96 TeV

We report on a first search for resonant pair production of neutral long-lived particles (NLLP) which each decay to a bb pair, using 3.6 fb(-1) of data recorded with the D0 detector at the Fermilab Tevatron collider. We search for pairs of displaced vertices in the tracking detector at radii in the range 1.6-20 cm from the beam axis. No significant excess is observed above background, and upper limits are set on the production rate in a hidden-valley benchmark model for a range of Higgs boson masses and NLLP masses and lifetimes.

Search for Neutral Higgs Bosons at High tanβ in the b(h/H/A)→bτ(+)τ(−) Channel

The first search in pp collisions at √s = 1.96 TeV for the production of neutral Higgs bosons in association with bottom quarks and decaying in two tau leptons is presented. The cross section for this process is enhanced in many extensions of the standard model, such as its minimal supersymmetric extension (MSSM) at large tanβ. The data, corresponding to an integrated luminosity of 328 pb -1 , were collected with the DO detector at the Fermilab Tevatron Collider. An upper limit is set on the production cross section of neutral Higgs bosons in the mass range of 90 to 150 GeV, and this limit is used to exclude part of the MSSM parameter space.

Search for the rare decay B(0)(s)→μ(+)μ(−)

V.M. Abazov ai, B. Abbott bu, M. Abolins bj, B.S. Acharya ac, M. Adams av, T. Adams at, G.D. Alexeev ai, G. Alkhazov am, A. Alton bi,1, G. Alverson bh, G.A. Alves b, L.S. Ancu ah, M. Aoki au, Y. Arnoud n, M. Arov be, A. Askew at, B. Åsman an, O. Atramentov bm, C. Avila h, J. BackusMayes cb, F. Badaud m, L. Bagby au, B. Baldin au, D.V. Bandurin at, S. Banerjee ac, E. Barberis bh, A.-F. Barfuss o, P. Baringer bc, J. Barreto b, J.F. Bartlett au, U. Bassler r, S. Beale f, A. Bean bc, M. Begalli c, M. Begel bs, C. Belanger-Champagne an, L. Bellantoni au, J.A. Benitez bj, S.B. Beri aa, G. Bernardi q, R. Bernhard v, I. Bertram ao, M. Besançon r, R. Beuselinck ap, V.A. Bezzubov al, P.C. Bhat au, V. Bhatnagar aa, G. Blazey aw, S. Blessing at, K. Bloom bl, A. Boehnlein au, D. Boline br, T.A. Bolton bd, E.E. Boos ak, G. Borissov ao, T. Bose bg, A. Brandt bx, O. Brandt w, R. Brock bj, G. Brooijmans bp, A. Bross au, D. Brown s, X.B. Bu g, D. Buchholz ax, M. Buehler ca, V. Buescher x, V. Bunichev ak, S. Burdin ao,2, T.H. Burnett cb, C.P. Buszello ap, P. Calfayan y, B. Calpas o, S. Calvet p, E. Camacho-Pérez af, J. Cammin bq, M.A. Carrasco-Lizarraga af, E. Carrera at, B.C.K. Casey au, H. Castilla-Valdez af, S. Chakrabarti br, D. Chakraborty aw, K.M. Chan ba, A. Chandra bz, G. Chen bc, S. Chevalier-Théry r, D.K. Cho bw, S.W. Cho ae, S. Choi ae, B. Choudhary ab, T. Christoudias ap, S. Cihangir au, D. Claes bl, J. Clutter bc, M. Cooke au, W.E. Cooper au, M. Corcoran bz, F. Couderc r, M.-C. Cousinou o, A. Croc r, D. Cutts bw, M. Ćwiok ad, A. Das ar, G. Davies ap, K. De bx, S.J. de Jong ah, E. De La Cruz-Burelo af, F. Déliot r, M. Demarteau au, R. Demina bq, D. Denisov au, S.P. Denisov al, S. Desai au, K. DeVaughan bl, H.T. Diehl au, M. Diesburg au, A. Dominguez bl, T. Dorland cb, A. Dubey ab, L.V. Dudko ak, D. Duggan bm, A. Duperrin o, S. Dutt aa, A. Dyshkant aw, M. Eads bl, D. Edmunds bj, J. Ellison as, V.D. Elvira au, Y. Enari q, S. Eno bf, H. Evans ay, A. Evdokimov bs, V.N. Evdokimov al, G. Facini bh, A.V. Ferapontov bw, T. Ferbel bf,bq, F. Fiedler x, F. Filthaut ah, W. Fisher bj, H.E. Fisk au, M. Fortner aw, H. Fox ao, S. Fuess au, T. Gadfort bs, A. Garcia-Bellido bq, V. Gavrilov aj, P. Gay m, W. Geist s, W. Geng o,bj, D. Gerbaudo bn, C.E. Gerber av, Y. Gershtein bm, D. Gillberg f, G. Ginther au,bq, G. Golovanov ai, A. Goussiou cb, P.D. Grannis br, S. Greder s, H. Greenlee au, Z.D. Greenwood be, E.M. Gregores d, G. Grenier t, Ph. Gris m, J.-F. Grivaz p, A. Grohsjean r, S. Grünendahl au, M.W. Grünewald ad, F. Guo br, J. Guo br, G. Gutierrez au, P. Gutierrez bu, A. Haas bp,3, P. Haefner y, S. Hagopian at, J. Haley bh, L. Han g, K. Harder aq, A. Harel bq, J.M. Hauptman bb, J. Hays ap, T. Hebbeker u, D. Hedin aw, A.P. Heinson as, U. Heintz bw, C. Hensel w, I. Heredia-De La Cruz af, K. Herner bi, G. Hesketh bh, M.D. Hildreth ba, R. Hirosky ca, T. Hoang at, J.D. Hobbs br, B. Hoeneisen l, M. Hohlfeld x, S. Hossain bu, Y. Hu br, Z. Hubacek j, N. Huske q, V. Hynek j, I. Iashvili bo, R. Illingworth au, A.S. Ito au, S. Jabeen bw, M. Jaffré p, S. Jain bo, D. Jamin o, R. Jesik ap, K. Johns ar, M. Johnson au, D. Johnston bl, A. Jonckheere au, P. Jonsson ap, J. Joshi aa, A. Juste au,4, K. Kaadze bd, E. Kajfasz o, D. Karmanov ak, P.A. Kasper au, I. Katsanos bl, R. Kehoe by, S. Kermiche o, N. Khalatyan au, A. Khanov bv, A. Kharchilava bo, Y.N. Kharzheev ai, D. Khatidze bw, M.H. Kirby ax, M. Kirsch u, J.M. Kohli aa, A.V. Kozelov al, J. Kraus bj, A. Kumar bo, A. Kupco k, T. Kurča t, V.A. Kuzmin ak, J. Kvita i, S. Lammers ay, G. Landsberg bw, P. Lebrun t, H.S. Lee ae, W.M. Lee au, J. Lellouch q, L. Li as, Q.Z. Li au, S.M. Lietti e, J.K. Lim ae, D. Lincoln au, J. Linnemann bj, V.V. Lipaev al, R. Lipton au, Y. Liu g, Z. Liu f, A. Lobodenko am, M. Lokajicek k, P. Love ao, H.J. Lubatti cb, R. Luna-Garcia af,5, A.L. Lyon au, A.K.A. Maciel b, D. Mackin bz, R. Madar r, R. Magaña-Villalba af, S. Malik bl, V.L. Malyshev ai, Y. Maravin bd, J. Martínez-Ortega af, R. McCarthy br, C.L. McGivern bc, M.M. Meijer ah, A. Melnitchouk bk, D. Menezes aw, P.G. Mercadante d, M. Merkin ak,

Double parton interactions in y + 3 jet and y + b/cjet 2 jet events in p(p)over-bar collisions at root s=1.96 TeV

We determine the fraction of events with double parton (DP) scattering in a single ppbar collision at sqrt{s}=1.96 TeV in samples of photon + 3 jet and photon + b/c jet + 2 jet events collected with the D0 detector and corresponding to an integrated luminosity of about 8.7 fb^{-1}. The DP fractions and effective cross sections (sigma_eff) are measured for both event samples using the same kinematic selections. The measured DP fractions range from 0.21 to 0.17, with effective cross sections in the photon + 3 jet and photon + b/c jet + 2 jet samples of sigma_eff^incl = 12.7 +- 0.2 (stat) +- 1.3 (syst) mb and sigma_eff^HF = 14.6 +- 0.6 (stat) +- 3.2 (syst) mb, respectively.

Measurement of the differential y+c-jet cross section and the ratio of differential y+c and y+b cross sections in proton-antiproton collisions at sqrt(s) = 1.96 TeV

We present measurements of the differential cross section

Search for Higgs Boson Production in Dilepton and Missing Energy Final States with 5.4 fb(−1) of pp-bar Collisions at s√=1.96 TeV

d\sigma/dp_{T}^{\gamma}

Measurement of tt-bar production in the τ+jets topology using pp-bar collisions at s√=1.96 TeV

for the associated production of a

Measurement of the Zγ→νν-bar γ Production Cross Section and Limits on Anomalous ZZγ and Zγγ Couplings in pp-bar Collisions at s√=1.96 TeV

c

Evidence of WW and WZ Production with lepton+jets Final States in pp-bar Collisions at s√=1.96 TeV

-quark jet and an isolated photon with rapidity