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The SVX II silicon vertex detector upgrade at CDF

Nuclear Inst. and Methods in Physics Research, A 360:1-2 (1995) 118-124

Authors:

J Antos, HY Chao, MT Cheng, ML Chu, RS Guo, CL Ho, PK Teng, MJ Wang, SC Wu, GP Yeh, P Yeh, E Blucher, H Frisch, G Sullivan, E Barsotti, S Cihangir, H Gonzalez, M Hrycyk, M Lindenmeyer, J Pawlak, P Ratzmann, J Spalding, L Spiegel, C Swoboda, R Yarema, S Zimmerman, T Zimmerman, C Gay, J Huth, J Oliver, Y Iwata, T Ohmoto, T Ohsugi, B Barnett, J Cammerata, J Skarha, N Bruner, M Frautschi, M Gold, M Hoeferkamp, P Kingsberry, J Matthews, L Yu, S Seidel, TL Thomas, S Wells, N Tamura, N Bacchetta, D Bisello, A Castro, A Paccagnella, J Boudreau, E Engels, P Hu, T Huffman, P Shepard, S Vandenbrink, F Bedeschi, S Belforte, C Bonaccorso, A Franceschi, S Galeotti, P Giannetti, A Menzione, F Morsani, M Dell'Orso, G Punzi, F Raffaelli, L Ristori, F Zetti, D Bortoletto, A Garfinkel, A Hardmann, K Hoffman, NM Shaw, J Done, T Kamon, V Scarpine, HJ Trost, J Wolinski, D Benjamin, A Sill, JF Hou, R Ely, C Haber, I Kipnis, S Kleinfelder, O Milgrome

Abstract:

The SVX vertex detector has been very successful in heavy flavor physics at CDF, playing a significant role in both top and bottom analyses. SVX′, a radiation hard version of SVX, is presently taking data. In 1998 the Main Injector upgrade to the accelerator complex at Fermilab will provide a significant increase in luminosity, and will require a new vertex detector, SVX II. The specifications and design considerations for this detector are discussed. © 1995.
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Neutral strange particle production in deep inelastic scattering at HERA

ArXiv hep-ex/9505011 (1995)
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Measurement of the diffractive structure function in deep inelastic scattering at HERA

ArXiv hep-ex/9505010 (1995)
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Study of the photon remnant in resolved photoproduction at HERA

ArXiv hep-ex/9505001 (1995)
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Study of D*(2010)±production in ep collisions at HERA

Physics Letters B 349:1-2 (1995) 225-237

Authors:

M Derrick, D Krakauer, S Magill, D Mikunas, B Musgrave, J Repond, R Stanek, RL Talaga, H Zhang, R Ayad, G Bari, M Basile, L Bellagamba, D Boscherini, A Bruni, G Bruni, P Bruni, G Cara Romeo, G Castellini, M Chiarini, L Cifarelli, F Cindolo, A Contin, M Corradi, I Gialas, P Giusti, G Iacobucci, G Laurenti, G Levi, A Margotti, T Massam, R Nania, C Nemoz, F Palmonari, A Polini, G Sartorelli, R Timellini, Y Zamora Garcia, A Zichichi, A Bargende, J Crittenden, K Desch, B Diekmann, T Doeker, M Eckert, L Feld, A Frey, M Geerts, G Geitz, M Grothe, T Haas, H Hartmann, D Haun, K Heinloth, E Hilger, HP Jakob, UF Katz, SM Mari, A Mass, S Mengel, J Mollen, E Paul, C Rembser, R Schattevoy, D Schramm, J Stamm, R Wedemeyer, S Campbell-Robson, A Cassidy, N Dyce, B Foster, S George, R Gilmore, GP Heath, HF Heath, TJ Llewellyn, CJS Morgado, DJP Norman, JA O'Mara, RJ Tapper, SS Wilson, R Yoshida, RR Rau, M Arneodo, L Iannotti, M Schioppa, G Susinno, A Bernstein, A Caldwell, JA Parsons, S Ritz, F Sciulli, PB Straub, L Wai, S Yang, Q Zhu, P Borzemski, J Chwastowski, A Eskreys, K Piotrzkowski

Abstract:

We report the first observation of charmed mesons with the ZEUS detector at HERA using the decay channel D*+→ (D0→ K-π+)π+(+c.c.). Clear signals in the mass difference ΔM=M(D*)-M(D0) as well as in the M(Kπ) distribution at the D0mass are found. The ep cross section for inclusive D*±production with Q2< 4 GeV2in the γp centre-of-mass energy range 115 < W < 275 GeV has been determined to be (32±7-7 +4) nb in the kinematic regionpt(D*) ≥ 1.7 GeV, |η(D*)| < 1.5. Extrapolating outside this region, assuming a mass of the charm quark of 1.5 GeV, we estimate the ep charm cross section to be σ(ep → ccX) = (0.45 ± 0.11-0.22 +0.37) μb at s=296 GeV and 〈W〉 = 198 GeV. The average γp charm cross section σ(γp → ccX) is found to be (6.3 ± 2.2-3.0 +6.3) μb at 〈W〉 = 163 GeV and (16.9 ± 5.2-8.5 +13.9) μb at 〈W〉 = 243 GeV. The increase of the total charm photoproduction cross section by one order of magnitude with respect to low energy data experiments is well described by QCD NLO calculations using singular gluon distributions in the proton. © 1995.
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