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Observation of B→KS0π+π- and Evidence for B→K*±π∓

Physical Review Letters American Physical Society (APS) 89:25 (2002) 251801

Authors:

E Eckhart, KK Gan, C Gwon, T Hart, K Honscheid, D Hufnagel, H Kagan, R Kass, TK Pedlar, JB Thayer, E von Toerne, T Wilksen, MM Zoeller, H Muramatsu, SJ Richichi, H Severini, P Skubic, SA Dytman, JA Mueller, S Nam, V Savinov, S Chen, JW Hinson, J Lee, DH Miller, V Pavlunin, EI Shibata, IPJ Shipsey, D Cronin-Hennessy, AL Lyon, CS Park, W Park, EH Thorndike, TE Coan, YS Gao, F Liu, Y Maravin, R Stroynowski, M Artuso, C Boulahouache, K Bukin, E Dambasuren, K Khroustalev, R Mountain, R Nandakumar, T Skwarnicki, S Stone, JC Wang, AH Mahmood, SE Csorna, I Danko, G Bonvicini, D Cinabro, M Dubrovin, S McGee, A Bornheim, E Lipeles, SP Pappas, A Shapiro, WM Sun, AJ Weinstein, F Würthwein, R Mahapatra, RA Briere, GP Chen, T Ferguson, G Tatishvili, H Vogel, NE Adam, JP Alexander, K Berkelman, V Boisvert, DG Cassel, PS Drell, JE Duboscq, KM Ecklund, R Ehrlich, L Gibbons, B Gittelman, SW Gray, DL Hartill, BK Heltsley, L Hsu, CD Jones, J Kandaswamy, DL Kreinick, A Magerkurth, H Mahlke-Krüger, TO Meyer, NB Mistry, E Nordberg, JR Patterson, D Peterson, J Pivarski, D Riley, AJ Sadoff, H Schwarthoff, MR Shepherd, JG Thayer, D Urner, B Valant-Spaight, G Viehhauser, A Warburton, M Weinberger, SB Athar, P Avery, L Breva-Newell, V Potlia, H Stoeck, J Yelton, G Brandenburg, DY-J Kim, R Wilson, K Benslama, BI Eisenstein, J Ernst, GD Gollin, RM Hans, I Karliner, N Lowrey, MA Marsh, C Plager, C Sedlack, M Selen, JJ Thaler, J Williams, KW Edwards, R Ammar, D Besson, X Zhao, S Anderson, VV Frolov, Y Kubota, SJ Lee, SZ Li, R Poling, A Smith, CJ Stepaniak, J Urheim, Z Metreveli, KK Seth, A Tomaradze, P Zweber, S Ahmed, MS Alam, L Jian, M Saleem, F Wappler
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Towards Coherent Neutrino Detection Using Low-Background Micropattern Gas Detectors

ArXiv hep-ex/0212034 (2002)

Authors:

P Barbeau, JI Collar, J Miyamoto, I Shipsey

Abstract:

The detection of low energy neutrinos ($<$ few tens of MeV) via coherent nuclear scattering remains a holy grail of sorts in neutrino physics. This uncontroversial mode of interaction is expected to profit from a sizeable increase in cross section proportional to neutron number squared in the target nucleus, an advantageous feature in view of the small probability of interaction via all other channels in this energy region. A coherent neutrino detector would open the door to many new applications, ranging from the study of fundamental neutrino properties to true "neutrino technology". Unfortunately, present-day radiation detectors of sufficiently large mass ($>$ 1 kg) are not sensitive to sub-keV nuclear recoils like those expected from this channel. The advent of Micropattern Gas Detectors (MPGDs), new technologies originally intended for use in High Energy Physics, may soon put an end to this impasse. We present first tests of MPGDs fabricated with radioclean materials and discuss the approach to assessing their sensitivity to these faint signals. Applications are reviewed, in particular their use as a safeguard against illegitimate operation of nuclear reactors. A first industrial mass production of Gas Electron Multipliers (GEMs) is succinctly described.
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Chandra imaging spectroscopy of 1E 1740.7–2942

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 337:3 (2002) 869-874

Authors:

E Gallo, RP Fender
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Dalitz Analysis ofD0→KS0π+π−

Physical Review Letters American Physical Society (APS) 89:25 (2002) 251802

Authors:

H Muramatsu, SJ Richichi, H Severini, P Skubic, SA Dytman, JA Mueller, S Nam, V Savinov, S Chen, JW Hinson, J Lee, DH Miller, V Pavlunin, EI Shibata, IPJ Shipsey, D Cronin-Hennessy, AL Lyon, CS Park, W Park, EH Thorndike, TE Coan, YS Gao, F Liu, Y Maravin, I Narsky, R Stroynowski, M Artuso, C Boulahouache, K Bukin, E Dambasuren, K Khroustalev, R Mountain, R Nandakumar, T Skwarnicki, S Stone, JC Wang, AH Mahmood, SE Csorna, I Danko, G Bonvicini, D Cinabro, M Dubrovin, S McGee, A Bornheim, E Lipeles, SP Pappas, A Shapiro, WM Sun, AJ Weinstein, DM Asner, R Mahapatra, HN Nelson, RA Briere, GP Chen, T Ferguson, G Tatishvili, H Vogel, NE Adam, JP Alexander, K Berkelman, F Blanc, V Boisvert, DG Cassel, PS Drell, JE Duboscq, KM Ecklund, R Ehrlich, L Gibbons, B Gittelman, SW Gray, DL Hartill, BK Heltsley, L Hsu, CD Jones, J Kandaswamy, DL Kreinick, A Magerkurth, H Mahlke-Krüger, TO Meyer, NB Mistry, E Nordberg, JR Patterson, D Peterson, J Pivarski, D Riley, AJ Sadoff, H Schwarthoff, MR Shepherd, JG Thayer, D Urner, B Valant-Spaight, G Viehhauser, A Warburton, M Weinberger, SB Athar, P Avery, L Breva-Newell, V Potlia, H Stoeck, J Yelton, G Brandenburg, DY-J Kim, R Wilson, K Benslama, BI Eisenstein, J Ernst, GD Gollin, RM Hans, I Karliner, N Lowrey, MA Marsh, C Plager, C Sedlack, M Selen, JJ Thaler, J Williams, KW Edwards, R Ammar, D Besson, X Zhao, S Anderson, VV Frolov, Y Kubota, SJ Lee, SZ Li, R Poling, A Smith, CJ Stepaniak, J Urheim, Z Metreveli, KK Seth, A Tomaradze, P Zweber, S Ahmed, MS Alam, L Jian, M Saleem, F Wappler, E Eckhart, KK Gan, C Gwon, T Hart, K Honscheid, D Hufnagel, H Kagan, R Kass, TK Pedlar, JB Thayer, E von Toerne, T Wilksen, MM Zoeller
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Comparison of the isolated direct photon cross sections in pp̄ collisions at √s = 1.8 TeV and √s = 0.63 TeV

Physical Review D 65:11 (2002)

Authors:

D Acosta, T Affolder, H Akimoto, MG Albrow, D Ambrose, D Amidei, K Anikeev, J Antos, G Apollinari, T Arisawa, A Artikov, T Asakawa, W Ashmanskas, F Azfar, P Azzi-Bacchetta, N Bacchetta, H Bachacou, W Badgett, S Bailey, P De Barbaro, A Barbaro-Galtieri, VE Barnes, BA Barnett, S Baroiant, M Barone, G Bauer, F Bedeschi, S Belforte, WH Bell, G Bellettini, J Bellinger, D Benjamin, J Bensinger, A Beretvas, JP Berge, J Berryhill, A Bhatti, M Binkley, D Bisello, M Bishai, RE Blair, C Blocker, K Bloom, B Blumenfeld, SR Blusk, A Bocci, A Bodek, G Bolla, Y Bonushkin, D Bortoletto, J Boudreau, A Brandl, S Van Den Brink, C Bromberg, M Brozovic, E Brubaker, N Bruner, J Budagov, HS Budd, K Burkett, G Busetto, A Byon-Wagner, KL Byrum, S Cabrera, P Calafiura, M Campbell, W Carithers, J Carlson, D Carlsmith, W Caskey, 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, JY Chung, WH Chung, YS Chung, CI Ciobanu, AG Clark, M Coca, AP Colijn, A Connolly, M Convery, J Conway, M Cordelli, J Cranshaw

Abstract:

We have measured the cross sections d2σ/d P Tdη) for production of isolated direct photons in pp̄ collisions at two different center-of-mass energies, 1.8 TeV and 0.63 TeV, using the Collider Detector at Fermilab. The normalization of both data sets agrees with the predictions of quantum chromodynamics for a photon transverse momentum (PT) of 25 GeV/c, but the shapes versus photon PT do not. These shape differences lead to a significant disagreement in the ratio of cross sections in the scaling variable xT(≡ 2PT/√s). This disagreement in the xT ratio is difficult to explain with conventional theoretical uncertainties such as scale dependence and parton distribution parametrizations. © 2002 The American Physical Society.
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