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Deep inelastic scattering with leading protons or large rapidity gaps at HERA

ArXiv 0812.2003 (2008)
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Measurement of Bs0 Mixing Parameters from the Flavor-Tagged Decay Bs0→J/ψ

Physical Review Letters 101:24 (2008)

Authors:

VM Abazov, B Abbott, M Abolins, BS Acharya, M Adams, T Adams, E Aguilo, SH Ahn, M Ahsan, GD Alexeev, G Alkhazov, A Alton, G Alverson, GA Alves, M Anastasoaie, LS Ancu, T Andeen, S Anderson, B Andrieu, MS Anzelc, Y Arnoud, M Arov, M Arthaud, A Askew, B Åsman, ACS Assis Jesus, O Atramentov, C Autermann, C Avila, C Ay, F Badaud, A Baden, L Bagby, B Baldin, DV Bandurin, P Banerjee, S Banerjee, E Barberis, AF Barfuss, P Bargassa, P Baringer, J Barreto, JF Bartlett, U Bassler, D Bauer, S Beale, A Bean, M Begalli, M Begel, C Belanger-Champagne, L Bellantoni, A Bellavance, JA Benitez, SB Beri, G Bernardi, R Bernhard, I Bertram, M Besançon, R Beuselinck, VA Bezzubov, PC Bhat, V Bhatnagar, C Biscarat, G Blazey, F Blekman, S Blessing, D Bloch, K Bloom, A Boehnlein, D Boline, TA Bolton, G Borissov, T Bose, A Brandt, R Brock, G Brooijmans, A Bross, D Brown, NJ Buchanan, D Buchholz, M Buehler, V Buescher, V Bunichev, S Burdin, S Burke, TH Burnett, CP Buszello, JM Butler, P Calfayan, S Calvet, J Cammin, W Carvalho, BCK Casey, H Castilla-Valdez, S Chakrabarti, D Chakraborty, K Chan, KM Chan, A Chandra, F Charles

Abstract:

From an analysis of the flavor-tagged decay Bs0→J/ψ we obtain the width difference between the Bs0 light and heavy mass eigenstates, ΔΓs=0.19±0.07(stat)-0.01+0.02(syst)ps-1, and the CP-violating phase, s=-0.57-0.30+0.24(stat)-0.02+0.08(syst). The allowed 90% CL intervals of ΔΓs and s are 0.06<ΔΓs<0.30ps-1 and -1.20
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Search for third generation scalar leptoquarks decaying into τb

Physical Review Letters 101:24 (2008)

Authors:

VM Abazov, B Abbott, M Abolins, BS Acharya, M Adams, T Adams, E Aguilo, M Ahsan, GD Alexeev, G Alkhazov, A Alton, G Alverson, GA Alves, M Anastasoaie, LS Ancu, T Andeen, S Anderson, B Andrieu, MS Anzelc, M Aoki, Y Arnoud, M Arov, M Arthaud, A Askew, B Åsman, ACS Assis Jesus, O Atramentov, C Avila, F Badaud, L Bagby, B Baldin, DV Bandurin, P Banerjee, S Banerjee, E Barberis, AF Barfuss, P Bargassa, P Baringer, J Barreto, JF Bartlett, U Bassler, D Bauer, S Beale, A Bean, M Begalli, M Begel, C Belanger-Champagne, L Bellantoni, A Bellavance, JA Benitez, SB Beri, G Bernardi, R Bernhard, I Bertram, M Besançon, R Beuselinck, VA Bezzubov, PC Bhat, V Bhatnagar, C Biscarat, G Blazey, F Blekman, S Blessing, D Bloch, K Bloom, A Boehnlein, D Boline, TA Bolton, EE Boos, G Borissov, T Bose, A Brandt, R Brock, G Brooijmans, A Bross, D Brown, XB Bu, NJ Buchanan, D Buchholz, M Buehler, V Buescher, V Bunichev, S Burdin, TH Burnett, CP Buszello, JM Butler, P Calfayan, S Calvet, J Cammin, W Carvalho, BCK Casey, H Castilla-Valdez, S Chakrabarti, D Chakraborty, K Chan, KM Chan, A Chandra, F Charles, E Cheu, F Chevallier

Abstract:

We have searched for third generation leptoquarks (LQ3) using 1.05fb-1 of data collected with the D0 detector at the Fermilab Tevatron Collider operating at s=1.96TeV. We set a 95% C.L. lower limit of 210 GeV on the mass of a scalar LQ3 state decaying solely to a b quark and a τ lepton. © 2008 The American Physical Society.
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Combined HERA deep inelastic scattering data and NLO QCD fits

Conference Proceedings - New Trends in HERA Physics 2008 (2008)

Abstract:

Previously published data on inclusive neutral and charged current e +p and e-p deep inelastic scattering from HERA have been combined. The new, model-independent method of combining the measured cross sections takes full account of correlated systematics in a coherent way, leading to significantly reduced uncertainties in the combined measurement across the (x;Q2) plane. The combined cross section data have been used as the sole input for a new next-to-leading order QCD fit to extract the parton distribution functions (PDFs) of the proton. The PDFs extracted have greatly reduced experimental uncertainties, compared to separate QCD analyses on data from H1 and ZEUS. Model uncertainties, including those arising from the parameterisation dependence, have also been carefully considered. The resulting HERA PDFs have impressive precision.

EURECA - The future of cryogenic dark matter detection in Europe

Proceedings of Science (2008)

Authors:

H Kraus, E Armengaud, M Bauer, I Bavykina, A Benoit, A Bento, J Blümer, L Bornschein, A Broniatowski, G Burghart, P Camus, A Chantelauze, M Chapellier, G Chardin, C Ciemniak, C Coppi, N Coron, O Crauste, FA Danevich, M De Jésus, P Marcillac, E Daw, X Defay, G Deuter, J Domange, P Di Stefano, G Drexlin, L Dumoulin, K Eitel, F Von Feilitzsch, D Filosofov, P Gandit, E Garcia, J Gascon, G Gerbier, J Gironnet, H Godfrin, S Grohmann, M Gros, M Hannewald, D Hauff, F Haug, S Henry, P Huff, J Imber, S Ingleby, C Isaila, J Jochum, A Juillard, M Kiefer, M Kimmerle, H Kluck, VV Kobychev, V Kozlov, VA Kudryavtsev, T Lachenmaier, JC Lanfranchi, RF Lang, P Loaiza, A Lubashevsky, M Malek, S Marnieros, R McGowan, V Mikhailik, VM Mokina, A Monfardini, XF Navick, T Niinikoski, AS Nikolaiko, L Oberauer, E Olivieri, Y Ortigoza, E Pantic, P Pari, B Paul, G Perinic, F Petricca, S Pfister, C Pobes, DV Poda, RB Podviyanuk, OG Polischuk, W Potzel, F Pröbst, J Puimedon, M Robinson, S Roth, K Rottler, S Rozov, C Sailer, A Salinas, V Sanglard, ML Sarsa, K Schäffner, S Scholl, S Scorza, A Smolnikov, W Seidel, S Semikh, M Stern

Abstract:

European Underground Rare Event Calorimeter Array (EURECA) will be an astro-particle physics facility in the Laboratoire Souterrain de Modane, aiming to directly detect galactic dark matter. The EURECA collaboration unites CRESST, EDELWEISS and the Spanish-French experiment ROSEBUD, thus concentrating and focussing effort on cryogenic detector research in Europe into a single facility. The aim is to explore WIMP - nucleon scalar cross sections in the 10-9 - 10-10 picobarn region with a target mass of up to one ton. A major advantage of EURECA is the planned use of more than just one target material (multi target experiment for WIMP identification).