AION/Magis

Research group

Research theme

Sub department

About

Observation of a narrow resonance of mass 2.46 GeV/c2 decaying to D*s+Ï€0 and confirmation of the D*sJ(2317) state

Physical Review D 68:3 (2003)

Authors:

D Besson, S Anderson, VV Frolov, DT Gong, Y Kubota, SZ Li, R Poling, A Smith, CJ Stepaniak, J Urheim, Z Metreveli, KK Seth, A Tomaradze, P Zweber, K Arms, E Eckhart, KK Gan, C Gwon, TK Pedlar, E Von Toerne, H Severini, P Skubic, SA Dytman, JA Mueller, S Nam, V Savinov, JW Hinson, GS Huang, J Lee, DH Miller, V Pavlunin, B Sanghi, EI Shibata, IPJ Shipsey, D Cronin-Hennessy, CS Park, W Park, JB Thayer, EH Thorndike, TE Coan, YS Gao, F Liu, R Stroynowski, M Artuso, C Boulahouache, S Blusk, E Dambasuren, O Dorjkhaidav, R Mountain, H Muramatsu, 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, RA Briere, GP Chen, T Ferguson, G Tatishvili, H Vogel, ME Watkins, NE Adam, JP Alexander, K Berkelman, V Boisvert, DG Cassel, JE Duboscq, KM Ecklund, R Ehrlich, RS Galik, 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, JR Patterson, D Peterson, J Pivarski, SJ Richichi

Abstract:

Using 13.5 fb-1 of e+e- annihilation data collected with the CLEO II detector, we have observed a narrow resonance decaying to D*s+ π0 with a mass near 2.46 GeV/c2. The search for such a state was motivated by the recent discovery by the BaBar Collaboration of a narrow state at 2.32 GeV/c 2, the D*sJ(2317)+, that decays to D s+ π0. Reconstructing the Ds + π0 and D*s+ π0 final states in CLEO data, we observe peaks in both of the corresponding reconstructed mass difference distributions, ΔM(D sπ0) = M(Dsπ0) - M(D s) and ΔM(D*s π0) = M(D*s π0) - M(D*s), both of them at values near 350 MeV/c2. We interpret these peaks as signatures of two distinct states, the D*sJ(2317)+ plus a new state, designated as the DsJ(2463)+. Because of the similar ΔM values, each of these states represents a source of background for the other if photons are lost, ignored or added. A quantitative accounting of these reflections confirms that both states exist. We have measured the mean mass differences 〈ΔM(Ds π0)〉 = 350.0 ±1.2 (stat) ± 1.0 (syst) MeV/c2 for the D*sJ(2317)+ state, and 〈ΔM(D* s π0)〉 = 351.2 ± 1.7 (stat) ± 1.0 (syst) MeV/c2 for the new DsJ(2463)+ state. We have also searched, but find no evidence, for decays of the two states via the channels D*s+ γ, Ds+ γ, and Ds+ π+ π-. The observations of the two states at 2.32 and 2.46 GeV/c2, in the D s+ π0 and D*s+ π0 decay channels, respectively, are consistent with their interpretations as cs̄ mesons with an orbital angular momentum L = 1 and spin and parity JP = 0+ and 1+. © 2003 The American Physical Society.

Search for baryons in the radiative penguin decay b→sγ

Physical Review D 68:1 (2003)

Authors:

KW Edwards, D Besson, S Andersen, VV Frolov, DT Gong, Y Kubota, SZ Li, R Poling, A Smith, CJ Stepaniak, J Urheim, Z Metreveli, KK Seth, A Tomaradze, P Zweber, S Ahmed, MS Alam, J Ernst, L Jian, M Saleem, F Wappler, K Arms, E Eckhart, KK Gan, C Gwon, K Honscheid, H Kagan, R Kass, TK Pedlar, E Von Toerne, H Severini, P Skubic, SA Dytman, JA Mueller, S Nam, V Savinov, JW Hinson, GS Huang, J Lee, DH Miller, V Pavlunin, B Sanghi, EI Shibata, IPJ Shipsey, D Cronin-Hennessy, CS Park, W Park, JB Thayer, EH Thorndike, TE Coan, YS Gao, F Liu, R Stroynowski, M Artuso, C Boulahouache, S Blusk, E Dambasuren, O Dorjkhaidav, R Mountain, H Muramatsu, 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, RA Briere, GP Chen, T Ferguson, G Tatishvili, H Vogel, ME Watkins, NE Adam, JP Alexander, K Berkelman, V Boisvert, DG Cassel, JE Duboscq, KM Ecklund, R Ehrlich, RS Galik, L Gibbons, B Gittelman, SW Gray, DL Hartill, BK Heltsley, L Hsu, CD Jones

Abstract:

We have searched for the baryon-containing radiative penguin decays B -→Λp̄γ and B-→ Σ0-pγ, using a sample of 9.7 × 106 BBÌ„ events collected at the Y(45) with the CLEO detector. We find no evidence for either, and set 90% confidence level upper limits of B(B -→Λp̄γ) + 0.3B(B -→Σ0-±è̄γ)±Õ·¡Î³ >2.0 GeV<3.3×10-6, [B(B-→Σ 0-p̄γ) + 0-4B(B-→Λ±è̄γ)±Õ ·¡Î³>2.0Gev<6.4×106. From the latter, we estimate B(B →Xsγ²â,³Ýs containing baryons) ·¡Î³>2.0 GeV<3.8×10-5. This limit implies upper limits on corrections to CLEO's recent measurement of branching fraction, mean photon energy, and variance in photon energy from b→sγ that are less than half the combined statistical and systematic errors quoted on these quantities. © 2003 The American Physical Society.

Search for the flavor-changing neutral current decay D0→µ+µ- in pp collisions at √s=1.96 TeV

Physical Review D 68:9 (2003)

Authors:

D Acosta, T Affolder, MH Ahn, T Akimoto, MG Albrow, D Ambrose, 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, M Brozovic, 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, W Caskey, 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, MN Coca, A Connolly, ME Convery

Abstract:

We report on a search for the flavor-changing neutral current decay D 0→µ+µ- in pp- collisions at √s = 1.96 TeV using 65 pb-1 of data collected by the CDF II experiment at the Fermilab Tevatron Collider. A displaced-track trigger selects long-lived D0 candidates in the D0→µ +µ- search channel, the kinematically similar D 0→П+p- channel used for normalization, the Cabibbo-favored D0K-П- channel used to optimize the selection criteria in an unbiased manner, and their charge conjugates. Finding no signal events in the D0→µ+µ- search window, we set an upper limit on the branching fraction B(D0→µ+µ-)≤2.5×10-6 (3.3×10-6) at the 90% (95%) confidence level.

Sensor Development for the CMS Pixel Detector

Institute of Electrical and Electronics Engineers (IEEE) 1 (2003) 350-354

Authors:

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

Measurement of prompt charm meson production cross sections in p(p)over-bar collisions at √s=1.96 TeV - art. no. 241804

PHYSICAL REVIEW LETTERS 91:24 (2003) ARTN 241804

Authors:

D Acosta, T Affolder, MH Ahn, T Akimoto, MG Albrow, D Ambrose, 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, M Brozovic, 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, W Caskey, 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, MN Coca, A Connolly, ME Convery, J Conway, M Cordelli, G Cortiana, J Cranshaw, R Culbertson, C Currat, D Cyr, D Dagenhart, S DaRonco, 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, P Doksus, A Dominguez, S Donati, M D'Onofrio, T Dorigo, V Drollinger, K Ebina, N Eddy, R Ely, R Erbacher, M Erdmann, D Errede, S Errede, R Eusebi, HC Fang, S Farrington, I Fedorko, RG Feild, M Feindt, JP Fernandez, C Ferretti, RD Field, I Fiori, G Flanagan, B Flaugher, LR Flores-Castillo, A Foland, S Forrester, GW Foster, M Franklin, H Frisch, Y Fujii, I Furic, A Gallas, M Gallinaro, J Galyardt, M Garcia-Sciveres, AF Garfinkel, C Gay, H Gerberich, E Gerchtein, DW Gerdes, S Giagu, P Giannetti, A Gibson, K Gibson, C Ginsburg, K Giolo, M Giordani, G Giurgiu, V Glagolev, D Glenzinski, M Gold, N Goldschmidt, D Goldstein, J Goldstein, G Gomez, G Gomez-Ceballos, M Goncharov, I Gorelov, AT Goshaw, Y Gotra, K Goulianos, A Gresele, G Grim, C Grosso-Pilcher, M Guenther, JG da Costa, C Haber, K Hahn, SR Hahn, E Halkiadakis, C Hall, R Handler, F Happacher, K Hara, M Hare, RF Harr, RM Harris, F Hartmann, K Hatakeyama, J Hauser, C Hays, E Heider, B Heinemann, J Heinrich, M Hennecke, M Herndon, C Hill, D Hirschbuehl, A Hocker, KD Hoffman, A Holloway, S Hou, MA Houlden, BT Huffman, RE Hughes, J Huston, K Ikado, J Incandela, G Introzzi, M Iori, Y Ishizawa, C Issever, A Ivanov, Y Iwata, B Iyutin, E James, D Jang, J Jarrell, D Jeans, H Jensen, M Jones, SY Jun, T Junk, T Kamon, J Kang, MK Unel, PE Karchin, S Kartal, Y Kato, Y Kemp, R Kephart, U Kerzel, D Khazins, V Khotilovich, B Kilminster, BJ Kim, DH Kim, HS Kim, JE Kim, MJ Kim, MS Kim, SB Kim, SH Kim, TH Kim, YK Kim, BT King, M Kirby, M Kirk, L Kirsch, S Klimenko, B Knuteson, H Kobayashi, P Koehn, K Kondo, J Konigsberg, K Kordas, A Korn, A Korytov, K Kotelnikov, AV Kotwal, A Kovalev, J Kraus, I Kravchenko, A Kreymer, J Kroll, M Kruse, V Krutelyov, SE Kuhlmann, N Kuznetsova, AT Laasanen, S Lai, S Lami, S Lammel, J Lancaster, M Lancaster, R Lander, K Lannon, A Lath, G Latino, R Lauhakangas, I Lazzizzera, Y Le, C Lecci, T LeCompte, J Lee, J Lee, SW Lee, N Leonardo, S Leone, JD Lewis, K Li, CS Lin, M Lindgren, TM Liss, DO Litvintsev, T Liu, Y Liu, NS Lockyer, A Loginov, J Loken, M Loreti, P Loverre, D Lucchesi, P Lukens, L Lyons, J Lys, D MacQueen, R Madrak, K Maeshima, P Maksimovic, L Malferrari, G Manca, R Marginean, A Martin, M Martin, V Martin, M Martinez, T Maruyama, H Matsunaga, M Mattson, P Mazzanti, KS McFarland, D McGivern, PM McIntyre, P McNamara, R McNulty, S Menzemer, A Menzione, P Merkel, C Mesropian, A Messina, A Meyer, T Miao, L Miller, R Miller, JS Miller, R Miquel, S Miscetti, M Mishina, G Mitselmakher, A Miyamoto, Y Miyazaki, N Moggi, R Moore, M Morello, T Moulik, A Mukherjee, M Mulhearn, T Muller, R Mumford, A Munar, P Murat, S Murgia, J Nachtman, S Nahn, I Nakamura, I Nakano, A Napier, R Napora, V Necula, F Niell, J Nielsen, C Nelson, T Nelson, C Neu, MS Neubauer, C Newman-Holmes, AS Nicollerat, T Nigmanov, H Niu, L Nodulman, K Oesterberg, T Ogawa, S Oh, YD Oh, T Ohsugi, R Oishi, T Okusawa, R Oldeman, R Orava, W Orejudos, C Pagliarone, F Palmonari, R Paoletti, V Papadimitriou, D Partos, S Pashapour, J Patrick, G Pauletta, M Paulini, T Pauly, C Paus, D Pellett, A Penzo, TJ Phillips, G Piacentino, J Piedra, KT Pitts, A Pompos, L Pondrom, G Pope, O Poukhov, F Prakoshyn, T Pratt, A Pronko, J Proudfoot, F Ptohos, G Punzi, J Rademacker, A Rakitine, S Rappoccio, F Ratnikov, H Ray, A Reichold, V Rekovic, P Renton, M Rescigno, F Rimondi, K Rinnert, L Ristori, M Riveline, WJ Robertson, A Robson, T Rodrigo, S Rolli, L Rosenson, R Roser, R Rossin, C Rott, J Russ, A Ruiz, D Ryan, H Saarikko, A Safonov, R St Denis, WK Sakumoto, D Saltzberg, C Sanchez, A Sansoni, L Santi, S Sarkar, K Sato, P Savard, A Savoy-Navarro, P Schemitz, P Schlabach, EE Schmidt, MP Schmidt, M Schmitt, G Schofield, L Scodellaro, A Scribano, F Scuri, A Sedov, S Seidel, Y Seiya, F Semeria, L Sexton-Kennedy, I Sfiligoi, MD Shapiro, T Shears, PF Shepard, M Shimojima, M Shochet, Y Shon, A Sidoti, M Siket, A Sill, P Sinervo, A Sisakyan, A Skiba, AJ Slaughter, K Sliwa, JR Smith, FD Snider, R Snihur, SV Somalwar, J Spalding, M Spezziga, L Spiegel, F Spinella, M Spiropulu, H Stadie, B Stelzer, O Stelzer-Chilton, J Strologas, D Stuart, A Sukhanov, K Sumorok, H Sun, T Suzuki, A Taffard, SF Takach, H Takano, R Takashima, Y Takeuchi, K Takikawa, P Tamburello, M Tanaka, R Tanaka, B Tannenbaum, N Tanimoto, S Tapprogge, M Tecchio, PK Teng, K Terashi, RJ Tesarek, S Tether, J Thom, AS Thompson, E Thomson, R Thurman-Keup, P Tipton, V Tiwari, S Tkaczyk, D Toback, K Tollefson, D Tonelli, M Tönnesmann, S Torre, D Torretta, W Trischuk, J Tseng, R Tsuchiya, S Tsuno, D Tsybychev, N Turini, M Turner, F Ukegawa, T Unverhau, S Uozumi, D Usynin, L Vacavant, T Vaiciulis, A Varganov, E Vataga, SIII Vejcik, G Velev, G Veramendi, T Vickey, R Vidal, I Vila, R Vilar, I Volobouev, M von der Mey, RG Wagner, RL Wagner, W Wagner, N Wallace, T Walter, Z Wan, MJ Wang, SM Wang, B Ward, S Waschke, D Waters, T Watts, M Weber, W Wester, B Whitehouse, AB Wicklund, E Wicklund, T Wilkes, HH Williams, P Wilson, BL Winer, P Wittich, S Wolbers, M Wolter, M Worcester, S Worm, T Wright, X Wu, F Würthwein, A Wyatt, A Yagil, T Yamashita, K Yamamoto, UK Yang, W Yao, GP Yeh, K Yi, J Yoh, P Yoon, K Yorita, T Yoshida, I Yu, S Yu, Z Yu, JC Yun, L Zanello, A Zanetti, I Zaw, F Zetti, J Zhou, A Zsenei, S Zucchelli