Professor Daniela Bortoletto: Publications

Tests of silicon sensors for the CMS pixel detector

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment Elsevier 530:1-2 (2004) 71-76

Authors:

A Dorokhov, C Amsler, D Bortoletto, V Chiochia, L Cremaldi, S Cucciarelli, M Konecki, K Prokofiev, C Regenfus, T Rohe, D Sanders, S Son, T Speer, M Swartz

Measurement of the polar-angle distribution of leptons from W boson decay as a function of the W transverse momentum in pp̄ collisions at √s=1.8 TeV

Physical Review D Particles Fields Gravitation and Cosmology 70:3 (2004) 1-32004

Authors:

D Acosta, T Affolder, MG Albrow, D Ambrose, D Amidei, K Anikeev, J Antos, G Apollinari, T Arisawa, A Artikov, W Ashmanskas, F Azfar, P Azzi-Bacchetta, N Bacchetta, H Bachacou, W Badgett, A Barbaro-Galtieri, 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, D Bortoletto, J Boudreau, C Bromberg, E Brubaker, J Budagov, HS Budd, K Burkett, G Busetto, KL Byrum, S Cabrera, M Campbell, W Carithers, D Carlsmith, A Castro, D Cauz, A Cerri, L Cerrito, J Chapman, C Chen, YC Chen, M Chertok, G Chiarelli, G Chlachidze, F Chlebana, ML Chu, JY Chung, WH Chung, YS Chung, CI Ciobanu, AG Clark, M Coca, A Connolly, M Convery, J Conway, M Cordelli, J Cranshaw, R Culbertson, D Dagenhart, S D'Auria, P de Barbaro, S de Cecco, S Dell'Agnello, M Dell'Orso, S Demers, L Demortier, M Deninno, D de Pedis, PF Derwent, C Dionisi, JR Dittmann, A Dominguez, S Donati, M D'Onofrio, T Dorigo, N Eddy, R Erbacher, D Errede, S Errede

Abstract:

We present a measurement of the polar-angle distribution of leptons from W boson decay, as a function of the W transverse momentum. The measurement uses an 80±4 pb^-1 sample of pp̄ collisions at √s = 1.8 TeV collected by the CDF detector and includes data from both the W→e+ν and W→μ+ν decay channels. We fit the W boson transverse mass distribution to a set of templates from a Monte Carlo event generator and detector simulation in several ranges of the W transverse momentum. The measurement agrees with the standard model expectation, whereby the ratio of longitudinally to transversely polarized W bosons, in the Collins-Soper W rest frame, increases with the W transverse momentum at a rate of approximately 15% per 10 GeV/c.

Observation of the narrow state X(3872) → J/ψπ⁺π^- in p̄p collisions at √s = 1.96 TeV

Physical Review Letters 93:7 (2004)

Authors:

D Acosta, T Affolder, MH Ahn, T Akimoto, MG Albrow, D Ambrose, S Amerio, 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, 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, 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, D Clark, MN Coca, A Connolly, ME Convery

Abstract:

The observation of a state consistent with X(3872) decaying into J/ψπ+π- was reported. The X(3872) mass was measured to be 3871.3±0.7(stat)±0.4(syst)MeV/c2 from a sample of 730±90 candidates. The observed width was consistent with the detector resolution. The results were found to be converging well with the measurements by the Belle Collaboration using b± decays.

Sensors for the CDF Run2b Silicon Detector

IEEE Transactions on Nuclear Science Institute of Electrical and Electronics Engineers (IEEE) 51:4 (2004) 1546-1554

Authors:

T Akimoto, M Aoki, P Azzi, N Bacchetta, S Behari, D Benjamin, D Bisello, G Bolla, P Booth, D Bortoletto, A Burghard, G Busetto, S Cabrera, A Canepa, G Cardoso, M Chertok, CI Ciobanu, P Cooke, G Derylo, I Fang, EJ Feng, JP Fernandez, B Flaugher, J Freeman, L Galtieri, J Galyardt, Garcia-Sciveres M., G Giurgiu, I Gorelov, C Haber, D Hale, K Hara, R Harr, C Hill, M Hoeferkamp, J Hoff, B Holbrook, SC Hong, M Hrycyk, TH Hsiung, J Incandela, EJ Jeon, KK Joo, T Junk, H Kahkola, S Karjalainen, S Kim, K Kobayashi, DJ Kong, B Krieger, M Kruse, S Kyre, R Lander, T Landry, R Lauhakangas, J Lee, Lu R.-S., PJ Lujan, P Lukens, E Mandelli, C Manea, P Maksimovic, P Merkel, SN Min, S Moccia, Y Nakamura, I Nakano, D Naoumov, T Nelson, B Nord, J Novak, T Okusawa, R Orava, Y Orlov, K Osterberg, D Pantano, V Pavlicek, D Pellett, J Pursley, P Riipinen, B Schuyler, S Seidel, A Shenai, A Soha, D Stuart, R Tanaka, M Tavi, H Von der Lippe, Walder J.-P., Z Wang, P Watje, M Weber, W Wester, K Yamamoto, YC Yang, W Yao, W Yao, R Yarema, H Yoshitama, JC Yun, F Zetti, T Zimmerman, S Zimmermann, S Zucchelli

Search for Bs⁰ → μ⁺μ ^- and Bd⁰ → μ⁺μ ^- decays in pp̄ collisions at √s = 1.96 TeV

Physical Review Letters 93:3 (2004)

Authors:

D Acousta, T Affolder, T Akimoto, MG Albrow, D Ambrose, S Amerio, D Amidei, A Anastassov, K Anikeev, A Annovi, J Antos, M Aoki, G Apollinari, T Arisawa, JF Arguin, A Artikov, W Ashmanskas, A Attal, F Azfar, P Azzi-Bacchetta, N Bacchetta, H Bachacou, W Badgett, A Barbaro-Galtieri, GJ Barker, VE Barnes, BA Barnett, S Baroiant, M Barone, G Bauer, F Bedeschi, S Behari, S Belforte, 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, E Brubaker, J Budagov, HS Budd, K Burkett, G Busetto, P Bussey, KL Byrum, S Cabrera, P Calafiura, M Campanelli, M Campbell, A Canepa, M Casarsa, D Carlsmith, S Carron, R Carosi, 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, I Cho, K Cho, D Chokheli, ML Chu, S Chuang, JY Chung, WH Chung, YS Chung, CI Ciobanu, MA Ciocci, AG Clark, D Clark, M Coca, A Connolly, M Convery, J Conway, M Cordelli

Abstract:

The decay mechanisms of Bs0 → μ +μ- and Bd0 → μ +μ- in pp̄ collisions were investigated. For discrimination of the decays from background events, four variables were used such as invariant mass of muon pair, B-candidate proper decay length, opening angle between B-hadron flight direction and B-candidate track isolation. A 'blind' analysis technique was also used for determination of optimal selection criteria for four variables. The results show that optimal set of selection criteria uses ∓80 MeV/c2 search window around B s0 mass, and I > 0.65.

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