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Events with an Isolated Lepton and Missing Transverse Momentum and Measurement of W Production at HERA

ArXiv 0911.0858 (2009)

Authors:

H1 The, ZEUS Collaborations
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First observation of B̄s0→Ds±K and Measurement of the Ratio of Branching Fractions B(B̄s0→Ds±K)/ B(B̄s0→Ds+π-)

Physical Review Letters 103:19 (2009)

Authors:

T Aaltonen, J Adelman, T Akimoto, MG Albrow, B Álvarez González, S Amerio, D Amidei, A Anastassov, A Annovi, J Antos, G Apollinari, A Apresyan, T Arisawa, A Artikov, W Ashmanskas, A Attal, A Aurisano, F Azfar, P Azzurri, W Badgett, A Barbaro-Galtieri, VE Barnes, BA Barnett, V Bartsch, G Bauer, PH Beauchemin, F Bedeschi, P Bednar, D Beecher, S Behari, G Bellettini, J Bellinger, D Benjamin, A Beretvas, J Beringer, A Bhatti, M Binkley, D Bisello, I Bizjak, RE Blair, C Blocker, B Blumenfeld, A Bocci, A Bodek, V Boisvert, G Bolla, D Bortoletto, J Boudreau, A Boveia, B Brau, A Bridgeman, L Brigliadori, C Bromberg, E Brubaker, J Budagov, HS Budd, S Budd, K Burkett, G Busetto, P Bussey, A Buzatu, KL Byrum, S Cabrera, C Calancha, M Campanelli, M Campbell, F Canelli, A Canepa, D Carlsmith, R Carosi, S Carrillo, S Carron, B Casal, M Casarsa, A Castro, P Catastini, D Cauz, V Cavaliere, M Cavalli-Sforza, A Cerri, L Cerrito, SH Chang, YC Chen, M Chertok, G Chiarelli, G Chlachidze, F Chlebana, K Cho, D Chokheli, JP Chou, G Choudalakis, SH Chuang, K Chung, WH Chung, YS Chung, CI Ciobanu, MA Ciocci, A Clark, D Clark, G Compostella

Abstract:

A combined mass and particle identification fit is used to make the first observation of the decay B̄s0→Ds±K□ and measure the branching fraction of B̄s0→Ds±K□ relative to B̄s0→Ds+π-. This analysis uses 1.2fb-1 integrated luminosity of pp̄ collisions at s=1.96TeV collected with the CDF II detector at the Fermilab Tevatron collider. We observe a B̄s0→Ds±K□ signal with a statistical significance of 8.1σ and measure B(B̄s0→ Ds±K□)/B(B̄s0→Ds+π-)=0.097±0.018(stat)±0. 009(syst). © 2009 The American Physical Society.
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Events with isolated leptons and missing transverse momentum and measurement of W production at HERA

European Physical Journal C 64:2 (2009) 251-271

Authors:

FD Aaron, C Alexa, V Andreev, B Antunovic, S Aplin, A Asmone, A Astvatsatourov, S Backovic, A Baghdasaryan, E Barrelet, W Bartel, K Begzsuren, O Behnke, A Belousov, JC Bizot, V Boudry, I Bozovic-Jelisavcic, J Bracinik, G Brandt, M Brinkmann, V Brisson, D Bruncko, A Bunyatyan, G Buschhorn, L Bystritskaya, AJ Campbell, KB Cantun Avila, F Cassol-Brunner, K Cerny, V Cerny, V Chekelian, A Cholewa, JG Contreras, JA Coughlan, G Cozzika, J Cvach, JB Dainton, K Daum, M Deák, Y De Boer, B Delcourt, M Del Degan, J Delvax, A De Roeck, EA De Wolf, C Diaconu, V Dodonov, A Dossanov, A Dubak, G Eckerlin, V Efremenko, S Egli, A Eliseev, E Elsen, S Essenov, A Falkiewicz, PJW Faulkner, L Favart, A Fedotov, R Felst, J Feltesse, J Ferencei, DJ Fischer, M Fleischer, A Fomenko, E Gabathuler, J Gayler, S Ghazaryan, A Glazov, I Glushkov, L Goerlich, M Goettlich, N Gogitidze, M Gouzevitch, C Grab, T Greenshaw, BR Grell, G Grindhammer, S Habib, D Haidt, M Hansson, C Helebrant, RCW Henderson, E Hennekemper, H Henschel, G Herrera, M Hildebrandt, KH Hiller, D Hoffmann, R Horisberger, T Hreus, M Jacquet, ME Janssen, X Janssen, V Jemanov, L Jönsson, AW Jung, H Jung, M Kapichine, J Katzy

Abstract:

Events with high energy isolated electrons, muons or tau leptons and missing transverse momentum are studied using the full e ± p data sample collected by the H1 experiment at HERA, corresponding to an integrated luminosity of 474 pb -1. Within the Standard Model, events with isolated leptons and missing transverse momentum mainly originate from the production of single W bosons. The total single W boson production cross section is measured as 1.14±0.25 (stat.)±0.14 (sys.) pb, in agreement with the Standard Model expectation. The data are also used to establish limits on the WW γ gauge couplings and for a measurement of the W boson polarisation. © 2009 Springer-Verlag / Società Italiana di Fisica.
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The ATLAS Collaboration

Nuclear Physics A 830:1-4 (2009) 925c-940c

Authors:

G Aad, B Abbott, J Abdallah, AA Abdelalim, A Abdesselam, O Abdinov, B Abi, M Abolins, H Abramowicz, E Acerbi, BS Acharya, DL Adams, TN Addy, J Adelman, C Adorisio, P Adragna, T Adye, S Aefsky, JA Aguilar-Saavedra, M Aharrouche, SP Ahlen, F Ahles, A Ahmad, H Ahmed, M Ahsan, G Aielli, T Akdogan, TPA Åkesson, G Akimoto, AV Akimov, MS Alam, MA Alam, J Albert, S Albrand, M Aleksa, IN Aleksandrov, C Alexa, G Alexander, G Alexandre, T Alexopoulos, M Alhroob, M Aliev, G Alimonti, J Alison, M Aliyev, PP Allport, SE Allwood-Spiers, A Aloisio, R Alon, A Alonso, MG Alviggi, K Amako, C Amelung, VV Ammosov, A Amorim, G Amorós, N Amram, C Anastopoulos, CF Anders, KJ Anderson, A Andreazza, V Andrei, XS Anduaga, A Angerami, F Anghinolfi, N Anjos, A Antonaki, M Antonelli, S Antonelli, B Antunovic, F Anulli, G Arabidze, I Aracena, Y Arai, ATH Arce, JP Archambault, S Arfaoui, JF Arguin, T Argyropoulos, M Arik, AJ Armbruster, O Arnaez, C Arnault, A Artamonov, D Arutinov, M Asai, S Asai, R Asfandiyarov, S Ask, B Åsman, D Asner, L Asquith, K Assamagan, A Astbury, A Astvatsatourov, G Atoian, B Auerbach, E Auge, K Augsten, M Aurousseau
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The CMS Collaboration

Nuclear Physics A 830:1-4 (2009) 946c-956c

Authors:

D Abbaneo, G Abbiendi, M Abbrescia, B Abelev, D Acosta, JG Acosta, O Actis, N Adam, W Adam, T Adams, MR Adams, A Adiguzel, V Adler, P Adzic, L Agostino, JL Agram, M Aguilar-Benitez, D Aharoni, M Ahmad, I Ahmed, S Ahuja, N Akchurin, B Akgun, U Akgun, IV Akin, E Alagoz, C Albajar, EA Albayrak, S Albergo, M Albrow, J Alcaraz Maestre, J Alexander, T Aliev, P Allfrey, N Almeida, G Altenhöfer, I Altsybeev, RL Alvarez, B Alver, G Alverson, GA Alves, M Alwarawrah, N Amapane, F Ambroglini, C Amsler, G Anagnostou, A Anastassov, M Anderson, J Andrea, V Andreev, Y Andreev, IM Anghel, L Antonelli, Z Antunovic, L Apanasevich, G Apollinari, A Aranyi, P Arce, R Arcidiacono, MW Arenton, H Arfaei, S Argiro, K Arisaka, M Arneodo, J Asaadi, MI Asghar, S Ashby, A Ashimova, A Askew, AC Assis Jesus, M Atac, O Atramentov, A Attikis, E Auffray, A Aurisano, C Autermann, P Avery, A Avetisyan, A Ayhan, I Azhgirey, T Aziz, P Azzi, P Azzurri, M Baarmand, J Babb, N Bacchetta, W Bacchi, M Bachtis, D Baden, P Baesso, S Baffioni, G Bagliesi, P Baillon, R Bainbridge, H Bakhshiansohi, MN Bakirci, JA Bakken, M Balazs, G Ball, A Ball
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