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First measurement of the ratio of branching fractions B(Lambda(0)(b) -> Lambda(+)(c) mu(-) (nu)over-bar(mu))/B(Lambda(0)(b) -> Lambda(+)(c) pi(-))

Authors :
Aaltonen, T. Adelman, J. Akimoto, T. Albrow, M. G. and Alvarez Gonzalez, B. Amerio, S. Amidei, D. Anastassov, A. and Annovi, A. Antos, J. Apollinari, G. Apresyan, A. and Arisawa, T. Artikov, A. Ashmanskas, W. Attal, A. and Aurisano, A. Azfar, F. Azzurri, P. Badgett, W. and Barbaro-Galtieri, A. Barnes, V. E. Barnett, B. A. Bartsch, V. Bauer, G. Beauchemin, P. -H. Bedeschi, F. Beecher, D. and Behari, S. Bellettini, G. Bellinger, J. Benjamin, D. and Beretvas, A. Beringer, J. Bhatti, A. Binkley, M. and Bisello, D. Bizjak, I. Blair, R. E. Blocker, C. and Blumenfeld, B. Bocci, A. Bodek, A. Boisvert, V. Bolla, G. Bortoletto, D. Boudreau, J. Boveia, A. Brau, B. and Bridgeman, A. Brigliadori, L. Bromberg, C. Brubaker, E. and Budagov, J. Budd, H. S. Budd, S. Burke, S. Burkett, K. and Busetto, G. Bussey, P. Buzatu, A. Byrum, K. L. and Cabrera, S. Calancha, C. Campanelli, M. Campbell, M. and Canelli, F. Canepa, A. Carls, B. Carlsmith, D. Carosi, R. Carrillo, S. Carron, S. Casal, B. Casarsa, M. and Castro, A. Catastini, P. Cauz, D. Cavaliere, V. and Cavalli-Sforza, M. Cerri, A. Cerrito, L. Chang, S. H. and Chen, Y. C. Chertok, M. Chiarelli, G. Chlachidze, G. and Chlebana, F. Cho, K. Chokheli, D. Chou, J. P. and Choudalakis, G. Chuang, S. H. Chung, K. Chung, W. H. and Chung, Y. S. Chwalek, T. Ciobanu, C. I. Ciocci, M. A. and Clark, A. Clark, D. Compostella, G. Convery, M. E. and Conway, J. Cordelli, M. Cortiana, G. Cox, C. A. Cox, D. J. Crescioli, F. Almenar, C. Cuenca Cuevas, J. and Culbertson, R. Cully, J. C. Dagenhart, D. Datta, M. and Davies, T. de Barbaro, P. De Cecco, S. Deisher, A. De Lorenzo, G. Dell'Orso, M. Deluca, C. Demortier, L. Deng, J. Deninno, M. Derwent, P. F. di Giovanni, G. P. and Dionisi, C. Di Ruzza, B. Dittmann, J. R. D'Onofrio, M. and Donati, S. Dong, P. Donini, J. Dorigo, T. Dube, S. and Efron, J. Elagin, A. Erbacher, R. Errede, D. Errede, S. and Eusebi, R. Fang, H. C. Farrington, S. Fedorko, W. T. and Feild, R. G. Feindt, M. Fernandez, J. P. Ferrazza, C. and Field, R. Flanagan, G. Forrest, R. Frank, M. J. and Franklin, M. Freeman, J. C. Furic, I. Gallinaro, M. and Galyardt, J. Garberson, F. Garcia, J. E. Garfinkel, A. F. and Genser, K. Gerberich, H. Gerdes, D. Gessler, A. and Giagu, S. Giakoumopoulou, V. Giannetti, P. Gibson, K. and Gimmell, J. L. Ginsburg, C. M. Giokaris, N. Giordani, M. and Giromini, P. Giunta, M. Giurgiu, G. Glagolev, V. and Glenzinski, D. Gold, M. Goldschmidt, N. Golossanov, A. and Gomez, G. Gomez-Ceballos, G. Goncharov, M. Gonzalez, O. and Gorelov, I. Goshaw, A. T. Goulianos, K. Gresele, A. and Grinstein, S. Grosso-Pilcher, C. Group, R. C. Grundler, U. and da Costa, J. Guimaraes Gunay-Unalan, Z. Haber, C. Hahn, K. Hahn, S. R. Halkiadakis, E. Han, B. -Y. Han, J. Y. and Happacher, F. Hara, K. Hare, D. Hare, M. Harper, S. and Harr, R. F. Harris, R. M. Hartz, M. Hatakeyama, K. and Hays, C. Heck, M. Heijboer, A. Heinrich, J. Henderson, C. Herndon, M. Heuser, J. Hewamanage, S. Hidas, D. and Hill, C. S. Hirschbuehl, D. Hocker, A. Hou, S. Houlden, M. Hsu, S. -C. Huffman, B. T. Hughes, R. E. Husemann, U. and Hussein, M. Husemann, U. Huston, J. Incandela, J. and Introzzi, G. Iori, M. Ivanov, A. James, E. Jayatilaka, B. Jeon, E. J. Jha, M. K. Jindariani, S. Johnson, W. and Jones, M. Joo, K. K. Jun, S. Y. Jung, J. E. Junk, T. R. and Kamon, T. Kar, D. Karchin, P. E. Kato, Y. Kephart, R. Keung, J. Khotilovich, V. Kilminster, B. Kim, D. H. and Kim, H. S. Kim, H. W. Kim, J. E. Kim, M. J. Kim, S. B. Kim, S. H. Kim, Y. K. Kimura, N. Kirsch, L. and Klimenko, S. Knuteson, B. Ko, B. R. Kondo, K. Kong, D. J. Konigsberg, J. Korytov, A. Kotwal, A. V. Kreps, M. and Kroll, J. Krop, D. Krumnack, N. Kruse, M. Krutelyov, V. Kubo, T. Kuhr, T. Kulkarni, N. P. Kurata, M. and Kusakabe, Y. Kwang, S. Laasanen, A. T. Lami, S. Lammel, S. Lancaster, M. Lander, R. L. Lannon, K. Lath, A. and Latino, G. Lazzizzera, I. LeCompte, T. Lee, E. Lee, H. S. Lee, S. W. Leone, S. Lewis, J. D. Lin, C. -S. and Linacre, J. Lindgren, M. Lipeles, E. Lister, A. and Litvintsev, D. O. Liu, C. Liu, T. Lockyer, N. S. and Loginov, A. Loreti, M. Lovas, L. Lucchesi, D. Luci, C. and Lueck, J. Lujan, P. Lukens, P. Lungu, G. Lyons, L. and Lys, J. Lysak, R. MacQueen, D. Madrak, R. Maeshima, K. Makhoul, K. Maki, T. Maksimovic, P. Malde, S. and Malik, S. Manca, G. Manousakis-Katsikakis, A. Margaroli, F. and Marino, C. Marino, C. P. Martin, A. Martin, V. and Martinez, M. Martinez-Ballarin, R. Maruyama, T. Mastrandrea, P. Masubuchi, T. Mathis, M. Mattson, M. E. Mazzanti, P. and McFarland, K. S. McIntyre, P. McNulty, R. Mehta, A. and Mehtala, P. Menzione, A. Merkel, P. Mesropian, C. Miao, T. Miladinovic, N. Miller, R. Mills, C. Milnik, M. and Mitra, A. Mitselmakher, G. Miyake, H. Moggi, N. Moon, C. S. Moore, R. Morello, M. J. Morlok, J. Movilla Fernandez, P. Mulmenstadt, J. Mukherjee, A. Muller, Th. and Mumford, R. Murat, P. Mussini, M. Nachtman, J. Nagai, Y. and Nagano, A. Naganoma, J. Nakamura, K. Nakano, I. and Napier, A. Necula, V. Nett, J. Neu, C. Neubauer, M. S. and Neubauer, S. Nielsen, J. Nodulman, L. Norman, M. and Norniella, O. Nurse, E. Oakes, L. Oh, S. H. Oh, Y. D. and Oksuzian, I. Okusawa, T. Orava, R. Griso, S. Pagan and Palencia, E. Papadimitriou, V. Papaikonomou, A. Paramonov, A. A. Parks, B. Pashapour, S. Patrick, J. Pauletta, G. and Paulini, M. Paus, C. Peiffer, T. Pellett, D. E. and Penzo, A. Phillips, T. J. Piacentino, G. Pianori, E. and Pinera, L. Pitts, K. Plager, C. Pondrom, L. Poukhov, O. and Pounder, N. Prakoshyn, F. Pronko, A. Proudfoot, J. and Ptohos, F. Pueschel, E. Punzi, G. Pursley, J. and Rademacker, J. Rahaman, A. Ramakrishnan, V. Ranjan, N. and Redondo, I. Renton, P. Renz, M. Rescigno, M. Richter, S. and Rimondi, F. Ristori, L. Robson, A. Rodrigo, T. and Rodriguez, T. Rogers, E. Rolli, S. Roser, R. Rossi, M. and Rossin, R. Roy, P. Ruiz, A. Russ, J. Rusu, V. and Safonov, A. Sakumoto, W. K. Salto, O. Santi, L. Sarkar, S. Sartori, L. Sato, K. Savoy-Navarro, A. Schlabach, P. and Schmidt, A. Schmidt, E. E. Schmidt, M. A. Schmidt, M. P. and Schmitt, M. Schwarz, T. Scodellaro, L. Scribano, A. and Scuri, F. Sedov, A. Seidel, S. Seiya, Y. Semenov, A. and Sexton-Kennedy, L. Sforza, F. Sfyrla, A. Shalhout, S. Z. and Shears, T. Shepard, P. F. Shimojima, M. Shiraishi, S. and Shochet, M. Shon, Y. Shreyber, I. Sidoti, A. Sinervo, P. and Sisakyan, A. Slaughter, A. J. Slaunwhite, J. Sliwa, K. and Smith, J. R. Snider, F. D. Snihur, R. Soha, A. and Somalwar, S. Sorin, V. Spalding, J. Spreitzer, T. and Squillacioti, P. Stanitzki, M. Denis, R. St. Stelzer, B. and Stelzer-Chilton, O. Stentz, D. Strologas, J. Strycker, G. L. and Stuart, D. Suh, J. S. Sukhanov, A. Suslov, I. and Suzuki, T. Taffard, A. Takashima, R. Takeuchi, Y. and Tanaka, R. Tecchio, M. Teng, P. K. Terashi, K. Tesarek, R. J. Thom, J. Thompson, A. S. Thompson, G. A. Thomson, E. Tipton, P. Ttito-Guzman, P. Tkaczyk, S. Toback, D. and Tokar, S. Tollefson, K. Tomura, T. Tonelli, D. and Torre, S. Torretta, D. Totaro, P. Tourneur, S. Trovato, M. Tsai, S. -Y. Tu, Y. Turini, N. Ukegawa, F. and Vallecorsa, S. van Remortel, N. Varganov, A. Vataga, E. and Vazquez, F. Velev, G. Vellidis, C. Veszpremi, V. Vidal, M. Vidal, R. Vila, I. Vilar, R. Vine, T. Vogel, M. and Volobouev, I. Volpi, G. Wagner, P. Wagner, R. G. and Wagner, R. L. Wagner, W. Wagner-Kuhr, J. Wakisaka, T. and Wallny, R. Wang, S. M. Warburton, A. Waters, D. and Weinberger, M. Weinelt, J. Wester, III, W. C. Whitehouse, B. and Whiteson, D. Wicklund, A. B. Wicklund, E. Wilbur, S. and Williams, G. Williams, H. H. Wilson, P. Winer, B. L. and Wittich, P. Wolbers, S. Wolfe, C. Wright, T. Wu, X. and Wuerthwein, F. Wynne, S. M. Xie, S. Yagil, A. Yamamoto, K. Yamaoka, J. Yang, U. K. Yang, Y. C. Yao, W. M. and Yeh, G. P. Yoh, J. Yorita, K. Yoshida, T. Yu, G. B. and Yu, I. Yu, S. S. Yun, J. C. Zanello, L. Zanetti, A. and Zhang, X. Zheng, Y. Zucchelli, S. CDF Collaboration
Publication Year :
2009

Abstract

This article presents the first measurement of the ratio of branching fractions B(Lambda(0)(b) -> Lambda(+)(c) mu(-) (nu) over bar (mu))/B(Lambda(0)(b) -> Lambda(+)(c) pi(-)). Measurements in two control samples using the same technique B((B) over bar (0) -> D+ mu(-) (nu) over bar (mu))/B((B) over bar (0) -> D+ pi(-)) and B((B) over bar (0) -> D*(2010)(+) mu(-) (nu) over bar (mu))/B((B) over bar (0) -> D*(2010)(+) pi(-)) are also reported. The analysis uses data from an integrated luminosity of approximately 172 pb(-1) of p (p) over bar collisions at root s = 1: 96 TeV, collected with the CDF II detector at the Fermilab Tevatron. The relative branching fractions are measured to be B(Lambda(0)(b) -> Lambda(+)(c) mu(-) (nu) over bar (mu))/B(Lambda(0)(b) -> Lambda(+)(c) pi(-)) = 16.6 +/- 3.0(stat) +/- 1.0(syst) (+2.6)(-3.4) (PDG) +/- 0.3(EBR), B((B) over bar (0) -> D+ mu(-) (nu) over bar (mu))/B((B) over bar (0) -> D+ pi(-)) = 9.9 +/- 1.0(stat) +/- 0.6(syst) +/- 0.4(PDG) +/- 0.5(EBR), and B((B) over bar (0)-> D*(2010)(+) mu(-) (nu) over bar (mu))/B((B) over bar (0) -> D*(2010)(+) pi(-)) = 16.5 +/- 2.3(stat) +/- 0.6(syst) +/- 0.5(PDG) +/- 0.8(EBR). The uncertainties are from statistics (stat), internal systematics (syst), world averages of measurements published by the Particle Data Group or subsidiary measurements in this analysis (PDG), and unmeasured branching fractions estimated from theory (EBR), respectively. This article also presents measurements of the branching fractions of four new Lambda(0)(b) semileptonic decays: Lambda(0)(b) -> Lambda(c)(2595)(+) mu(-) (nu) over bar (mu), Lambda(0)(b) -> Lambda(c)(2625)(+) mu(-) (nu) over bar (mu), Lambda(0)(b) -> Sigma(c)(2425)(0) pi(+) mu(-) (nu) over bar (mu) , and Lambda(0)(b) -> Sigma(c)(2455)(++) pi(-) mu(-) (nu) over bar (mu), relative to the branching fraction of the Lambda(0)(b) -> Lambda(+)(c) mu(-) (nu) over bar (mu) decay. Finally, the transverse-momentum distribution of Lambda(0)(b) baryons produced in p (p) over bar collisions is measured and found to be significantly different from that of (B) over bar (0) mesons, which results in a modification in the production crosssection ratio sigma(Lambda b0)/sigma((B) over bar0) with respect to the CDF I measurement.

Details

Language :
English
Database :
OpenAIRE
Accession number :
edsair.od......2127..465e8e317b63ba093af114d9f24e8341

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