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New results on silicon microstrip detectors of CMS tracker

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment Elsevier 447:1-2 (2000) 142-150

Authors:

N Demaria, S Albergo, M Angarano, P Azzi, E Babucci, N Bacchetta, A Bader, G Bagliesi, A Basti, U Biggeri, GM Bilei, D Bisello, D Boemi, G Bolla, F Bosi, L Borrello, D Bortoletto, C Bozzi, S Braibant, H Breuker, M Bruzzi, A Buffini, S Busoni, A Candelori, A Caner, R Castaldi, A Castro, E Catacchini, B Checcucci, P Ciampolini, C Civinini, D Creanza, R D'Alessandro, M Da Rold, M de Palma, R Dell'Orso, R Della Marina, S Dutta, C Eklund, A Elliott-Peisert, G Favro, L Feld, L Fiore, E Focardi, M French, K Freudenreich, A F眉rtjes, A Giassi, M Giorgi, A Giraldo, B Glessing, WH Gu, G Hall, R Hammerstrom, T Hebbeker, J Hrubec, M Huhtinen, A Kaminsky, V Karimaki, Koenig, M Krammer, P Lariccia, M Lenzi, M Loreti, K Luebelsmeyer, W Lustermann, P M盲ttig, G Maggi, M Mannelli, G Mantovani, A Marchioro, C Mariotti, G Martignon, B Mc Evoy, M Meschini, A Messineo, E Migliore, S My, A Paccagnella, F Palla, D Pandoulas, A Papi, G Parrini, D Passeri, M Pieri, S Piperov, R Potenza, V Radicci, F Raffaelli, M Raymond, A Santocchia, B Schmitt, G Selvaggi, L Servoli, G Sguazzoni, R Siedling, L Silvestris, K Skog, A Starodumov, I Stavitski, G Stefanini, P Tempesta, G Tonelli, A Tricomi, T Tuuva, C Vannini, PG Verdini, G Viertel, Z Xie, Li Yahong, S Watts, B Wittmer

Saltatory Relaxation of the Cosmological Constant

ArXiv hep-th/0005276 (2000)

Authors:

Jonathan L Feng, John March-Russell, Savdeep Sethi, Frank Wilczek

Abstract:

We modify and extend an earlier proposal by Brown and Teitelboim to relax the effective cosmological term by nucleation of branes coupled to a three-index gauge potential. Microscopic considerations from string/M theory suggest two major innovations in the framework. First, the dependence of brane properties on the compactification of extra dimensions may generate a very small quantized unit for jumps in the effective cosmological term. Second, internal degrees of freedom for multiply coincident branes may enhance tunneling rates by exponentially large density of states factors. These new features essentially alter the relaxation dynamics. By requiring stability on the scale of the lifetime of the universe, rather than absolute stability, we derive a non-trivial relation between the supersymmetry breaking scale and the value of the cosmological term. It is plausibly, though not certainly, satisfied in Nature.

Saltatory Relaxation of the Cosmological Constant

(2000)

Authors:

Jonathan L Feng, John March-Russell, Savdeep Sethi, Frank Wilczek

Measurement of the differential dijet mass cross section in pp虅 collisions at 鈭歴=1.8 TeV

Physical Review D Particles Fields Gravitation and Cosmology 61:9 (2000) 1-6

Authors:

T Affolder, H Akimoto, A Akopian, MG Albrow, P Amaral, SR Amendolia, D Amidei, K Anikeev, J Antos, G Apollinari, T Arisawa, T Asakawa, W Ashmanskas, M Atac, F Azfar, P Azzi-Bacchetta, N Bacchetta, MW Bailey, S Bailey, P De Barbaro, A Barbaro-Galtieri, VE Barnes, BA Barnett, M Barone, G Bauer, F Bedeschi, S Belforte, G Bellettini, J Bellinger, D Benjamin, J Bensinger, A Beretvas, JP Berge, J Berryhill, S Bertolucci, B Bevensee, A Bhatti, C Bigongiari, M Binkley, D Bisello, RE Blair, C Blocker, K Bloom, B Blumenfeld, SR Blusk, A Bocci, A Bodek, W Bokhari, G Bolla, Y Bonushkin, D Bortoletto, J Boudreau, A Brandi, S Van Den Brink, C Bromberg, M Brozovic, N Bruner, E Buckley-Geer, J Budagov, HS Budd, K Burkett, G Busetto, A Byon-Wagner, KL Byrum, M Campbell, A Caner, W Carithers, J Carlson, D Carlsmith, J Cassada, A Castro, D Cauz, A Cerri, AW Chan, PS Chang, PT Chang, J Chapman, C Chen, YC Chen, MT Cheng, M Chertok, G Chiarelli, I Chirikov-Zorin, G Chlachidze, F Chlebana, L Christofek, ML Chu, S Cihangir, CI Ciobanu, AG Clark, A Connolly, J Conway, J Cooper, M Cordelli, D Costanzo, J Cranshaw, D Cronin-Hennessy, R Cropp, R Culbertson, D Dagenhart

Abstract:

We present a measurement of the cross section for production of two or more jets as a function of dijet mass, based on an integrated luminosity of 86 pb-1 collected with the Collider Detector at Fermilab. Our dijet mass spectrum is described within errors by next-to-leading order QCD predictions using CTEQ4HJ parton distributions, and is in good agreement with a similar measurement from the D脴 experiment. 漏2000 the American Physical Society.

Direct Measurement of the W Boson Width in ppbar Collisions at roots = 1.8 TeV

ArXiv hep-ex/0004017 (2000)

Authors:

CDF Collaboration, T Affolder