Measurement of prompt charm meson production cross sections in p p̄ collisions at √s = 1.96 TeV

Physical Review Letters 91:24 (2003) 241804/7

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:

Differential cross sections dσ/dPT for prompt charm meson production in pp̄ collisions at √s=1.96 TeV were measured. The measured differential cross sections are higher than the theoretical predictions by about 100% at low pT and 50% at high pT. However, they are compatible within uncertainties. The models also underestimate Β meson productions at √s=1.8 TeV by similar factors [2,4,5].

Measurement of prompt charm meson production cross sections in pp collisions at square root s = 1.96 TeV.

Phys Rev Lett 91:24 (2003) 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, J-F 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, W-H 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, H-C 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, J Guimaraes 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, M Karagoz 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, A-S 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, S 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, CDF II Collaboration

Abstract:

We report on measurements of differential cross sections dsigma/dp(T) for prompt charm meson production in ppmacr; collisions at sqrt[s]=1.96 TeV using 5.8+/-0.3 pb(-1) of data from the CDF II detector at the Fermilab Tevatron. The data are collected with a new trigger that is sensitive to the long lifetime of hadrons containing heavy flavor. The charm meson cross sections are measured in the central rapidity region |y|K-pi(+), D(*+)-->D0pi(+), D+-->K-pi(+)pi(+), D(+)(s)-->phipi(+), and their charge conjugates. The measured cross sections are compared to theoretical calculations.

Observation of the Narrow State $X(3872)\to J/ψπ^{+}π^{-}$ in $\bar{p}p$ Collisions at $\sqrt{s}=1.96 \TeV$

ArXiv hep-ex/0312021 (2003)

Authors:

the CDFII Collaboration, D Acosta, T Affolder, MH Ahn, T Akimoto, MG Albrow, D Ambrose, S Amerio, D Amidei, A Anastassov, K Anikeev

Position Dependence of Charge Collection in Prototype Sensors for the CMS Pixel Detector

ArXiv physics/0312009 (2003)

Authors:

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

A 201 MHz RF cavity design with non-stressed pre-curved be windows for muon cooling channels

Proceedings of the IEEE Particle Accelerator Conference 2 (2003) 1243-1245

Authors:

D Li, A Ladran, J Staples, S Virostek, M Zisman, W Lau, S Yang, RA Rimmer

Abstract:

We present a 201-MHz RF cavity design for muon cooling channels with non-stressed and pre-curved Be foils to terminate the beam apertures. The Be foils are necessary to improve the cavity shunt impedance with large beam apertures needed for accommodating large transverse size muon beams. Be is a low-Z material with good electrical and thermal properties. It presents an almost transparent window to muon beams, but terminates the RF cavity electro-magnetically. Previous designs use pre-stressed flat Be foils in order to keep cavity from detuning resulting from RF heating on the window surface. Be foils are expensive, and difficult to make under pre-stress to accommodate thermal expansion. An alternative design is to use pre-curved and non-stressed Be foils where the buckling direction is known, and frequency shifts can be properly predicted. We will present mechanical simulations of the Be window designs.