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Insertion of STC into TRT at the Department of Physics, Oxford
Credit: CERN

Professor Chris Hays

Professor of Physics

Research theme

  • Fundamental particles and interactions

Sub department

  • Particle Physics

Research groups

  • ATLAS
Chris.Hays@physics.ox.ac.uk
Telephone: 01865 (2)73355
Denys Wilkinson Building, room 675
  • About
  • Research
  • Publications

Search for doubly charged Higgs boson pair production in the decay to μ+μ+μ-μ- in p(p)over-bar collisions at √s=1.96 TeV -: art. no. 141801

PHYSICAL REVIEW LETTERS 93:14 (2004) ARTN 141801

Authors:

VM Abazov, B Abbott, M Abolins, BS Acharya, DL Adams, M Adams, T Adams, M Agelou, JL Agram, SN Ahmed, SH Ahn, GD Alexeev, G Alkhazov, A Alton, G Alverson, GA Alves, S Anderson, B Andrieu, Y Arnoud, A Askew, B Åsman, C Autermann, C Avila, L Babukhadia, TC Bacon, A Baden, S Baffioni, B Baldin, PW Balm, S Banerjee, E Barberis, P Bargassa, P Baringer, C Barnes, J Barreto, JF Bartlett, U Bassler, D Bauer, A Bean, S Beauceron, F Beaudette, M Begel, SB Beri, G Bernardi, I Bertram, M Besançon, A Besson, R Beuselinck, VA Bezzubov, PC Bhat, V Bhatnagar, M Bhattacharjee, M Binder, A Bischoff, KM Black, I Blackler, G Blazey, F Blekman, D Bloch, U Blumenschein, A Boehnlein, TA Bolton, P Bonamy, F Borcherding, G Borissov, K Bos, T Bose, C Boswell, A Brandt, G Briskin, R Brock, G Brooijmans, A Bross, D Buchholz, M Buehler, V Buescher, S Burdin, TH Burnett, E Busato, JM Butler, J Bystricky, F Canelli, W Carvalho, BCK Casey, D Casey, NM Cason, H Castilla-Valdez, S Chakrabarti, D Chakraborty, KM Chan, A Chandra, D Chapin, F Charles, E Cheu, L Chevalier, DK Cho, S Choi, S Chopra, T Christiansen, L Christofek, D Claes, AR Clark, C Clément, Y Coadou, DJ Colling, L Coney, B Connolly, WE Cooper, D Coppage, M Corcoran, J Coss, A Cothenet, MC Cousinou, S Crépé-Renaudin, M Cristetiu, MAC Cummings, D Cutts, H da Motta, B Davies, G Davies, GA Davis, K De, P de Jong, SJ de Jong, E De la Cruz-Burelo, CD Martins, S Dean, K Del Signore, F Déliot, PA Delsart, M Demarteau, R Demina, P Demine, D Denisov, SP Denisov, S Desai, HT Diehl, M Diesburg, M Doidge, H Dong, S Doulas, L Duflot, SR Dugad, A Duperrin, J Dyer, A Dyshkant, M Eads, D Edmunds, T Edwards, J Ellison, J Elmsheuser, JT Eltzroth, VD Elvira, S Eno, P Ermolov, OV Eroshin, J Estrada, D Evans, H Evans, A Evdokimov, VN Evdokimov, J Fast, SN Fatakia, D Fein, L Feligioni, T Ferbel, F Fiedler, F Filthaut, HE Fisk, F Fleuret, M Fortner, H Fox, W Freeman, S Fu, S Fuess, CF Galea, E Gallas, E Galyaev, M Gao, C Garcia, A Garcia-Bellido, J Gardner, V Gavrilov, D Gelé, R Gelhaus, K Genser, CE Gerber, Y Gershtein, G Geurkov, G Ginther, K Goldmann, T Golling, B Gómez, K Gounder, A Goussiou, G Graham, PD Grannis, S Greder, JA Green, H Greenlee, ZD Greenwood, EM Gregores, S Grinstein, JF Grivaz, L Groer, S Grünendahl, MW Grünewald, W Gu, SN Gurzhiev, G Gutierrez, P Gutierrez, A Haas, NJ Hadley, H Haggerty, S Hagopian, I Hall, RE Hall, C Han, L Han, K Hanagaki, P Hanlet, K Harder, JM Hauptman, R Hauser, C Hays, J Hays, C Hebert, D Hedin, JM Heinmiller, AP Heinson, U Heintz, C Hensel, G Hesketh, MD Hildreth, R Hirosky, JD Hobbs, B Hoeneisen, M Hohlfeld, SJ Hong, R Hooper, S Hou, Y Hu, J Huang, Y Huang, I Iashvili, R Illingworth, AS Ito, S Jabeen, M Jaffré, S Jain, V Jain, K Jakobs, A Jenkins, R Jesik, Y Jiang, K Johns, M Johnson, P Johnson, A Jonckheere, P Jonsson, H Jöstlein, A Juste, MM Kado, D Käfer, W Kahl, S Kahn, E Kajfasz, AM Kalinin, J Kalk, D Karmanov, J Kasper, D Kau, Z Ke, R Kehoe, S Kermiche, S Kesisoglou, A Khanov, A Kharchilava, YM Kharzheev, KH Kim, B Klima, M Klute, JM Kohli, M Kopal, V Korablev, J Kotcher, B Kothari, AV Kotwal, A Koubarovsky, A Kouchner, O Kouznetsov, AV Kozelov, J Kozminski, J Krane, MR Krishnaswamy, S Krzywdzinski, M Kubantsev, S Kuleshov, Y Kulik, S Kunori, A Kupco, T Kurca, VE Kuznetsov, S Lager, N Lahrichi, G Landsberg, J Lazoflores, AC Le Bihan, P Lebrun, SW Lee, WM Lee, A Leflat, C Leggett, F Lehner, C Leonidopoulos, P Lewis, J Li, QZ Li, X Li, JGR Lima, D Lincoln, SL Linn, J Linnemann, R Lipton, L Lobo, A Lobodenko, M Lokajicek, A Lounis, J Lu, HJ Lubatti, A Lucotte, L Lueking, C Luo, M Lynker, AL Lyon, AKA Maciel, RJ Madaras, AM Magnan, M Maity, PK Mal, S Malik, VL Malyshev, V Manankov, HS Mao, Y Maravin, T Marshall, M Martens, MI Martin, SEK Mattingly, AA Mayorov, R McCarthy, R McCroskey, T McMahon, D Meder, HL Melanson, A Melnitchouk, X Meng, M Merkin, KW Merritt, A Meyer, C Miao, H Miettinen, D Mihalcea, CS Mishra, J Mitrevski, N Mokhov, J Molina, NK Mondal, HE Montgomery, RW Moore, M Mostafa, GS Muanza, M Mulders, YD Mutaf, E Nagy, F Nang, M Narain, VS Narasimham, NA Naumann, HA Neal, JP Negret, S Nelson, P Neustroev, C Noeding, A Nomerotski, SF Novaes, T Nunnemann, E Nurse, V O'Dell, DC O'Neil, V Oguri, N Oliveira, B Olivier, N Oshima, GJOY Garzón, P Padley, K Papageorgiou, N Parashar, J Park, SK Park, J Parsons, R Partridge, N Parua, A Patwa, PM Perea, E Perez, O Peters, P Pétroff, M Petteni, L Phaf, R Piegaia, PLM Podesta-Lerma, VM Podstavkov, BG Pope, E Popkov, WLP da Silva, HB Prosper, S Protopopescu, MB Przybycien, J Qian, A Quadt, B Quinn, KJ Rani, PA Rapidis, PN Ratoff, NW Reay, JF Renardy, S Reucroft, J Rha, M Ridel, M Rijssenbeek, I Ripp-Baudot, F Rizatdinova, C Royon, P Rubinov, R Ruchti, BM Sabirov, G Sajot, A Sánchez-Hernández, MP Sanders, A Santoro, G Savage, L Sawyer, T Scanlon, RD Schamberger, H Schellman, P Schieferdecker, C Schmitt, A Schukin, A Schwartzman, R Schwienhorst, S Sengupta, E Shabalina, V Shary, WD Shephard, D Shpakov, RA Sidwell, V Simak, V Sirotenko, D Skow, P Slattery, RP Smith, K Smolek, GR Snow, J Snow, S Snyder, S Söldner-Rembold, X Song, Y Song, L Sonnenschein, A Sopczak, V Sorín, M Sosebee, K Soustruznik, M Souza, NR Stanton, J Stark, J Steele, G Steinbrück, K Stevenson, V Stolin, A Stone, DA Stoyanova, J Strandberg, MA Strang, M Strauss, R Ströhmer, M Strovink, L Stutte, A Sznajder, M Talby, P Tamburello, W Taylor, P Telford, J Temple, S Tentindo-Repond, E Thomas, B Thooris, M Tomoto, T Toole, J Torborg, S Towers, T Trefzger, S Trincaz-Duvoid, TG Trippe, B Tuchming, AS Turcot, PM Tuts, L Uvarov, S Uvarov, S Uzunyan, B Vachon, R Van Kooten, WM van Leeuwen, N Varelas, EW Varnes, I Vasilyev, P Verdier, LS Vertogradov, M Verzocchi, F Villeneuve-Seguier, JR Vlimant, E Von Toerne, M Vreeswijk, TV Anh, HD Wahl, R Walker, N Wallace, ZM Wang, J Warchol, M Warsinsky, G Watts, M Wayne, M Weber, H Weerts, M Wegner, A White, V White, D Whiteson, D Wicke, DA Wijngaarden, GW Wilson, SJ Wimpenny, J Wittlin, T Wlodek, M Wobisch, J Womersley, DR Wood, Z Wu, TR Wyatt, Q Xu, N Xuan, R Yamada, T Yasuda, YA Yatsunenko, Y Yen, K Yip, SW Youn, J Yu, A Yurkewicz, A Zabi, A Zatserklyaniy, M Zdrazil, C Zeitnitz, B Zhang, D Zhang, X Zhang, T Zhao, Z Zhao, H Zheng, B Zhou, Z Zhou, J Zhu, M Zielinski, D Zieminska, A Zieminski, R Zitoun, V Zutshi, EG Zverev, A Zylberstejn
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Search for doubly-charged Higgs bosons decaying to dileptons in $p\barp$ collisions at $\sqrts = 1.96$ TeV

Phys. Rev. Lett. 93 (2004) 221802-221802

Authors:

D Acosta, others
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Measurement of prompt charm meson production cross sections in p p̄ collisions at √s = 1.96 TeV

Physical Review Letters 91:24 (2003)

Authors:

D Acosta, T Affolder, MH Ahn, T Akimoto, MG Albrow, D Ambrose, D Amidei, A Anastassov, K Anikeev, A Annovi, J Antos, M Aoki, G Apollinari, JF Arguin, T Arisawa, A Artikov, T Asakawa, W Ashmanskas, A Attal, F Azfar, P Azzi-Bacchetta, N Bacchetta, H Bachacou, W Badgett, S Bailey, A Barbaro-Galtieri, G Barker, VE Barnes, BA Barnett, S Baroiant, M Barone, G Bauer, F Bedeschi, S Behari, S Belforte, WH Bell, G Bellettini, J Bellinger, D Benjamin, A Beretvas, A Bhatti, M Binkley, D Bisello, M Bishai, RE Blair, C Blocker, K Bloom, B Blumenfeld, A Bocci, A Bodek, G Bolla, A Bolshov, PSL Booth, D Bortoletto, J Boudreau, S Bourov, C Bromberg, M Brozovic, E Brubaker, J Budagov, HS Budd, K Burkett, G Busetto, P Bussey, KL Byrum, S Cabrera, P Calafiura, M Campanelli, M Campbell, A Canepa, D Carlsmith, S Carron, R Carosi, M Casarsa, W Caskey, A Castro, P Catastini, D Cauz, A Cerri, C Cerri, L Cerrito, J Chapman, C Chen, YC Chen, M Chertok, G Chiarelli, G Chlachidze, F Chlebana, K Cho, D Chokheli, ML Chu, JY Chung, WH Chung, YS Chung, CI Ciobanu, MA Ciocci, AG Clark, MN Coca, A Connolly, ME Convery

Abstract:

Differential cross sections dσ/dPT for prompt charm meson production in pp̄ collisions at √s=1.96 TeV were measured. The measured differential cross sections are higher than the theoretical predictions by about 100% at low pT and 50% at high pT. However, they are compatible within uncertainties. The models also underestimate Β meson productions at √s=1.8 TeV by similar factors [2,4,5].
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Measurement of the mass difference m(Ds+)-m(D +) at CDF II

Physical Review D 68:7 (2003)

Authors:

D Acosta, T Affolder, MH Ahn, T Akimoto, MG Albrow, B Alcorn, C Alexander, D Allen, D Allspach, P Amaral, D Ambrose, SR Amendolia, D Amidei, J Amundson, A Anastassov, J Anderson, K Anikeev, A Annovi, J Antos, M Aoki, G Apollinari, JF Arguin, T Arisawa, A Artikov, T Asakawa, W Ashmanskas, A Attal, C Avanzini, F Azfar, P Azzi-Bacchetta, M Babik, N Bacchetta, H Bachacou, W Badgett, S Bailey, J Bakken, A Barbaro-Galtieri, A Bardi, M Bari, G Barker, VE Barnes, BA Barnett, S Baroiant, M Barone, E Barsotti, A Basti, G Bauer, D Beckner, F Bedeschi, S Behari, S Belforte, WH Bell, G Bellendir, G Bellettini, J Bellinger, D Benjamin, A Beretvas, B Berg, A Bhatti, M Binkley, D Bisello, M Bishai, RE Blair, C Blocker, K Bloom, B Blumenfeld, A Bocci, A Bodek, M Bogdan, G Bolla, A Bolshov, PSL Booth, D Bortoletto, J Boudreau, S Bourov, M Bowden, D Box, C Bromberg, W Brown, M Brozovic, E Brubaker, L Buckley-Geer, J Budagov, HS Budd, K Burkett, G Busetto, P Bussey, A Byon-Wagner, KL Byrum, S Cabrera, P Calafiura, M Campanelli, M Campbell, P Canal, A Canepa, W Carithers, D Carlsmith, R Carosi, K Carrell

Abstract:

We present a measurement of the mass difference m(Ds+) -m(D+), where both the Ds+ and D+ are reconstructed in the φπ+ decay channel. This measurement uses 11.6 pb-1 of data collected by CDF II using the new displaced-track trigger. The mass difference is found to be m(D s+)-m(D+) = 99.41±0.38(stat) ±0.21(syst) MeV/c2. copy; 2003 The American Physical Society.
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Identification of cosmic rays using drift chamber hit timing

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 506:1-2 (2003) 110-118

Authors:

AV Kotwal, HK Gerberich, C Hays

Abstract:

Identification of cosmic rays was discussed. Drift chamber hit timing method was used. The central outer tracker (COT) tracks as cosmic rays were studied and their direction of propagation and time of incidence were also measured.
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