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Calibrating High-Precision Faraday Rotation Measurements for LOFAR and the Next Generation of Low-Frequency Radio Telescopes

(2013)

Authors:

C Sotomayor-Beltran, C Sobey, JWT Hessels, G de Bruyn, A Noutsos, A Alexov, J Anderson, A Asgekar, IM Avruch, R Beck, ME Bell, MR Bell, MJ Bentum, G Bernardi, P Best, L Birzan, A Bonafede, F Breitling, J Broderick, WN Brouw, M Brueggen, B Ciardi, F de Gasperin, R-J Dettmar, A van Duin, S Duscha, J Eisloeffel, H Falcke, RA Fallows, R Fender, C Ferrari, W Frieswijk, MA Garrett, J Griessmeier, T Grit, AW Gunst, TE Hassall, G Heald, M Hoeft, A Horneffer, M Iacobelli, E Juette, A Karastergiou, E Keane, J Kohler, M Kramer, VI Kondratiev, LVE Koopmans, M Kuniyoshi, G Kuper, J van Leeuwen, P Maat, G Macario, S Markoff, JP McKean, DD Mulcahy, H Munk, E Orru, H Paas, M Pandey-Pommier, M Pilia, R Pizzo, AG Polatidis, W Reich, H Roettgering, M Serylak, J Sluman, BW Stappers, M Tagger, Y Tang, C Tasse, S ter Veen, R Vermeulen, RJ van Weeren, RAMJ Wijers, SJ Wijnholds, MW Wise, O Wucknitz, S Yatawatta, P Zarka
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The optical counterpart of the bright X-ray transient Swift J1745-26

(2013)

Authors:

T Muñoz-Darias, A de Ugarte Postigo, DM Russell, S Guziy, J Gorosabel, J Casares, M Armas Padilla, PA Charles, RP Fender, TM Belloni, F Lewis, S Motta, A Castro-Tirado, CG Mundell, R Sánchez-Ramírez, CC Thöne
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GAMA/H-ATLAS: THE DUST OPACITY–STELLAR MASS SURFACE DENSITY RELATION FOR SPIRAL GALAXIES

The Astrophysical Journal American Astronomical Society 766:1 (2013) 59

Authors:

MW Grootes, RJ Tuffs, CC Popescu, B Pastrav, E Andrae, M Gunawardhana, LS Kelvin, J Liske, M Seibert, EN Taylor, Alister W Graham, M Baes, IK Baldry, N Bourne, S Brough, A Cooray, A Dariush, G De Zotti, SP Driver, L Dunne, H Gomez, AM Hopkins, R Hopwood, M Jarvis, J Loveday, S Maddox, BF Madore, MJ Michałowski, P Norberg, HR Parkinson, M Prescott, ASG Robotham, DJB Smith, D Thomas, E Valiante
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Search for resonant top-antitop production in the lepton plus jets decay mode using the full CDF data set

Physical Review Letters 110:12 (2013)

Authors:

T Aaltonen, S Amerio, D Amidei, A Anastassov, A Annovi, J Antos, G Apollinari, JA Appel, T Arisawa, A Artikov, J Asaadi, W Ashmanskas, B Auerbach, A Aurisano, F Azfar, W Badgett, T Bae, A Barbaro-Galtieri, VE Barnes, BA Barnett, P Barria, P Bartos, M Bauce, F Bedeschi, S Behari, G Bellettini, J Bellinger, D Benjamin, A Beretvas, A Bhatti, KR Bland, B Blumenfeld, A Bocci, A Bodek, D Bortoletto, J Boudreau, A Boveia, L Brigliadori, C Bromberg, E Brucken, J Budagov, HS Budd, K Burkett, G Busetto, P Bussey, P Butti, A Buzatu, A Calamba, S Camarda, M Campanelli, F Canelli, B Carls, D Carlsmith, R Carosi, S Carrillo, B Casal, M Casarsa, A Castro, P Catastini, D Cauz, V Cavaliere, M Cavalli-Sforza, A Cerri, L Cerrito, YC Chen, M Chertok, G Chiarelli, G Chlachidze, K Cho, D Chokheli, MA Ciocci, A Clark, C Clarke, ME Convery, J Conway, M Corbo, M Cordelli, CA Cox, DJ Cox, M Cremonesi, D Cruz, J Cuevas, R Culbertson, N D'Ascenzo, M Datta, P De Barbaro, L Demortier, M Deninno, F Devoto, M D'Errico, A Di Canto, B Di Ruzza, JR Dittmann, M D'Onofrio, S Donati, M Dorigo, A Driutti, K Ebina, R Edgar, A Elagin

Abstract:

This Letter reports a search for a narrow resonant state decaying into two W bosons and two b quarks where one W boson decays leptonically and the other decays into a quark-antiquark pair. The search is particularly sensitive to top-antitop resonant production. We use the full data sample of proton-antiproton collisions at a center-of-mass energy of 1.96 TeV collected by the CDF II detector at the Fermilab Tevatron, corresponding to an integrated luminosity of 9.45 fb-1. No evidence for resonant production is found, and upper limits on the production cross section times branching ratio for a narrow resonant state are extracted. Within a specific benchmark model, we exclude a Z′ boson with mass, MZ′, below 915 GeV/c2 decaying into a top-antitop pair at the 95% credibility level assuming a Z′ boson decay width of ΓZ′=0.012M Z′. This is the most sensitive search for a narrow qq̄-initiated tt̄ resonance in the mass region below 750 GeV/c2. © 2013 American Physical Society.
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Measurement of the mass difference between top and antitop quarks

Physical Review D - Particles, Fields, Gravitation and Cosmology 87:5 (2013)

Authors:

T Aaltonen, S Amerio, D Amidei, A Anastassov, A Annovi, J Antos, G Apollinari, JA Appel, T Arisawa, A Artikov, J Asaadi, W Ashmanskas, B Auerbach, A Aurisano, F Azfar, W Badgett, T Bae, A Barbaro-Galtieri, VE Barnes, BA Barnett, P Barria, P Bartos, M Bauce, F Bedeschi, S Behari, G Bellettini, J Bellinger, D Benjamin, A Beretvas, A Bhatti, KR Bland, B Blumenfeld, A Bocci, A Bodek, D Bortoletto, J Boudreau, A Boveia, L Brigliadori, C Bromberg, E Brucken, J Budagov, HS Budd, K Burkett, G Busetto, P Bussey, P Butti, A Buzatu, A Calamba, S Camarda, M Campanelli, F Canelli, B Carls, D Carlsmith, R Carosi, S Carrillo, B Casal, M Casarsa, A Castro, P Catastini, D Cauz, V Cavaliere, M Cavalli-Sforza, A Cerri, L Cerrito, YC Chen, M Chertok, G Chiarelli, G Chlachidze, K Cho, D Chokheli, MA Ciocci, A Clark, C Clarke, ME Convery, J Conway, M Corbo, M Cordelli, CA Cox, DJ Cox, M Cremonesi, D Cruz, J Cuevas, R Culbertson, N D'Ascenzo, M Datta, P De Barbaro, L Demortier, M Deninno, F Devoto, M D'Errico, A Di Canto, B Di Ruzza, JR Dittmann, M D'Onofrio, S Donati, M Dorigo, A Driutti, K Ebina, R Edgar, A Elagin

Abstract:

We present a measurement of the mass difference between top (t) and antitop (t̄) quarks using tt̄ candidate events reconstructed in the final state with one lepton and multiple jets. We use the full data set of Tevatron √s=1.96 TeV proton-antiproton collisions recorded by the CDF II detector, corresponding to an integrated luminosity of 8.7 fb-1. We estimate event by event the mass difference to construct templates for top pair signal events and background events. The resulting mass difference distribution in data compared to signal and background templates using a likelihood fit yields ΔMtop=Mt-Mt̄=-1.95±1.11(stat) ±0.59(syst) GeV/c2 and is in agreement with the standard model prediction of no mass difference. © 2013 American Physical Society.
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