Measurement of Ratios of Fragmentation Fractions for Bottom Hadrons in p anti-p Collisions at s**(1/2) = 1.96 TeV

Collaboration, Cdf; Aaltonen, T.; Adelman, J.; Akimoto, T.; Albrow, M. G.; Álvarez González, B.; Amerio, S.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Aoki, M.; Apollinari, G.; Apresyan, A.; Arisawa, T.; Artikov, A.; Ashmanskas, W.; Attal, A.; Aurisano, A.; Azfar, F.; Azzi Bacchetta, P.; Azzurri, P.; Bacchetta, N.; Badgett, W.; Barbaro Galtieri, A.; Barnes, V. E.; Barnett, B. A.; Baroiant, S.; Bartsch, V.; Bauer, G.; Beauchemin, P. H.; Bedeschi, F.; Bednar, P.; Behari, S.; Bellettini, G.; Bellinger, J.; Belloni, A.; Benjamin, D.; Beretvas, A.; Beringer, J.; Berry, T.; Bhatti, A.; Binkley, M.; Bisello, D.; Bizjak, I.; Blair, R. E.; Blocker, C.; Blumenfeld, B.; Bocci, A.; Bodek, A.; Boisvert, V.; Bolla, G.; Bolshov, A.; Bortoletto, D.; Boudreau, J.; Boveia, A.; Brau, B.; Bridgeman, A.; Brigliadori, L.; Bromberg, C.; Brubaker, E.; Budagov, J.; Budd, H. S.; Budd, S.; Burkett, K.; Busetto, G.; Bussey, P.; Buzatu, A.; Byrum, K. L.; Cabrera, S.; Campanelli, M.; Campbell, M.; Canelli, F.; Canepa, A.; Carlsmith, D.; Carosi, R.; Carrillo, S.; Carron, S.; Casal, B.; Casarsa, M.; Castro, Andrea; Catastini, P.; Cauz, D.; Cavalli Sforza, M.; Cerri, A.; Cerrito, L.; Chang, S. H.; Chen, Y. C.; Chertok, M.; Chiarelli, G.; Chlachidze, G.; Chlebana, F.; Cho, K.; Chokheli, D.; Chou, J. P.; Choudalakis, G.; Chuang, S. H.; Chung, K.; Chung, W. H.; Chung, Y. S.; Ciobanu, C. I.; Ciocci, M. A.; Clark, A.; Clark, D.; Compostella, G.; Convery, M. E.; Conway, J.; Cooper, B.; Copic, K.; Cordelli, M.; Cortiana, G.; Crescioli, F.; Cuenca Almenar, C.; Cuevas, J.; Culbertson, R.; Cully, J. C.; Dagenhart, D.; Datta, M.; Davies, T.; De Barbaro, P.; De Cecco, S.; Deisher, A.; De Lentdecker, G.; De Lorenzo, G.; Dell’Orso, M.; Demortier, L.; Deng, J.; Deninno, Maria Maddalena; De Pedis, D.; Derwent, P. F.; Di Giovanni, G. P.; Dionisi, C.; Di Ruzza, B.; Dittmann, J. R.; D’Onofrio, M.; Donati, S.; Dong, P.; Donini, J.; Dorigo, T.; Dube, S.; Efron, J.; Erbacher, R.; Errede, D.; Errede, S.; Eusebi, R.; Fang, H. C.; Farrington, S.; Fedorko, W. T.; Feild, R. G.; Feindt, M.; Fernandez, J. P.; Ferrazza, C.; Field, R.; Flanagan, G.; Forrest, R.; Forrester, S.; Franklin, M.; Freeman, J. C.; Furic, I.; Gallinaro, M.; Galyardt, J.; Garberson, F.; Garcia, J. E.; Garfinkel, A. F.; Genser, K.; Gerberich, H.; Gerdes, D.; Giagu, S.; Giakoumopolou, V.; Giannetti, P.; Gibson, K.; Gimmell, J. L.; Ginsburg, C. M.; Giokaris, N.; Giordani, M.; Giromini, P.; Giunta, M.; Glagolev, V.; Glenzinski, D.; Gold, M.; Goldschmidt, N.; Golossanov, A.; Gomez, G.; Gomez Ceballos, G.; Goncharov, M.; González, O.; Gorelov, I.; Goshaw, A. T.; Goulianos, K.; Gresele, A.; Grinstein, S.; Grosso Pilcher, C.; Group, R. C.; Grundler, U.; Guimaraes Da Costa, J.; Gunay Unalan, Z.; Haber, C.; Hahn, K.; Hahn, S. R.; Halkiadakis, E.; Hamilton, A.; Han, B. Y.; Han, J. Y.; Handler, R.; Happacher, F.; Hara, K.; Hare, D.; Hare, M.; Harper, S.; Harr, R. F.; Harris, R. M.; Hartz, M.; Hatakeyama, K.; Hauser, J.; Hays, C.; Heck, M.; Heijboer, A.; Heinemann, B.; Heinrich, J.; Henderson, C.; Herndon, M.; Heuser, J.; Hewamanage, S.; Hidas, D.; Hill, C. S.; Hirschbuehl, D.; Hocker, A.; Hou, S.; Houlden, M.; Hsu, S. C.; Huffman, B. T.; Hughes, R. E.; Husemann, U.; Huston, J.; Incandela, J.; Introzzi, G.; Iori, M.; Ivanov, A.; Iyutin, B.; James, E.; Jayatilaka, B.; Jeans, D.; Jeon, E. J.; Jindariani, S.; Johnson, W.; Jones, M.; Joo, K. K.; Jun, S. Y.; Jung, J. E.; Junk, T. R.; Kamon, T.; Kar, D.; Karchin, P. E.; Kato, Y.; Kephart, R.; Kerzel, U.; Khotilovich, V.; Kilminster, B.; Kim, D. H.; Kim, H. S.; Kim, J. E.; Kim, M. J.; Kim, S. B.; Kim, S. H.; Kim, Y. K.; Kimura, N.; Kirsch, L.; Klimenko, S.; Klute, M.; Knuteson, B.; B. R., Ko; Koay, S. A.; Kondo, K.; Kong, D. J.; Konigsberg, J.; Korytov, A.; Kotwal, A. V.; Kraus, J.; Kreps, M.; Kroll, J.; Krumnack, N.; Kruse, M.; Krutelyov, V.; Kubo, T.; Kuhlmann, S. E.; Kuhr, T.; Kulkarni, N. P.; Kusakabe, Y.; Kwang, S.; Laasanen, A. T.; Lai, S.; Lami, S.; Lammel, S.; Lancaster, M.; Lander, R. L.; Lannon, K.; Lath, A.; Latino, G.; Lazzizzera, I.; Lecompte, T.; Lee, J.; Lee, J.; Lee, Y. J.; Lee, S. W.; Lefèvre, R.; Leonardo, N.; Leone, S.; Levy, S.; Lewis, J. D.; Lin, C.; Lin, C. S.; Linacre, J.; Lindgren, M.; Lipeles, E.; Lister, A.; Litvintsev, D. O.; Liu, T.; Lockyer, N. S.; Loginov, A.; Loreti, M.; Lovas, L.; R. S., Lu; Lucchesi, D.; Lueck, J.; Luci, C.; Lujan, P.; Lukens, P.; Lungu, G.; Lyons, L.; Lys, J.; Lysak, R.; Lytken, E.; Mack, P.; Macqueen, D.; Madrak, R.; Maeshima, K.; Makhoul, K.; Maki, T.; Maksimovic, P.; Malde, S.; Malik, S.; Manca, G.; Manousakis, A.; Margaroli, F.; Marino, C.; Marino, C. P.; Martin, A.; Martin, M.; Martin, V.; Martínez, M.; Martínez Ballarín, R.; Maruyama, T.; Mastrandrea, P.; Masubuchi, T.; Mattson, M. E.; Mazzanti, P.; Mcfarland, K. S.; Mcintyre, P.; Mcnulty, R.; Mehta, A.; Mehtala, P.; Menzemer, S.; Menzione, A.; Merkel, P.; Mesropian, C.; Messina, A.; Miao, T.; Miladinovic, N.; Miles, J.; Miller, R.; Mills, C.; Milnik, M.; Mitra, A.; Mitselmakher, G.; Miyake, H.; Moed, S.; Moggi, Niccolo'; Moon, C. S.; Moore, R.; Morello, M.; Movilla Fernandez, P.; Mülmenstädt, J.; Mukherjee, A.; Muller, T. H.; Mumford, R.; Murat, P.; Mussini, Manuel; Nachtman, J.; Nagai, Y.; Nagano, A.; Naganoma, J.; Nakamura, K.; Nakano, I.; Napier, A.; Necula, V.; Neu, C.; Neubauer, M. S.; Nielsen, J.; Nodulman, L.; Norman, M.; Norniella, O.; Nurse, E.; S. H., Oh; Y. D., Oh; Oksuzian, I.; Okusawa, T.; Oldeman, R.; Orava, R.; Osterberg, K.; Pagan Griso, S.; Pagliarone, C.; Palencia, E.; Papadimitriou, V.; Papaikonomou, A.; Paramonov, A. A.; Parks, B.; Pashapour, S.; Patrick, J.; Pauletta, G.; Paulini, M.; Paus, C.; Pellett, D. E.; Penzo, A.; Phillips, T. J.; Piacentino, G.; Piedra, J.; Pinera, L.; Pitts, K.; Plager, C.; Pondrom, L.; Portell, X.; Poukhov, O.; Pounder, N.; Prakoshyn, F.; Pronko, A.; Proudfoot, J.; Ptohos, F.; Punzi, G.; Pursley, J.; Rademacker, J.; Rahaman, A.; Ramakrishnan, V.; Ranjan, N.; Redondo, I.; Reisert, B.; Rekovic, V.; Renton, P.; Rescigno, M.; Richter, S.; Rimondi, Franco; Ristori, L.; Robson, A.; Rodrigo, T.; Rogers, E.; Rolli, S.; Roser, R.; Rossi, M.; Rossin, R.; Roy, P.; Ruiz, A.; Russ, J.; Rusu, V.; Saarikko, H.; Safonov, A.; Sakumoto, W. K.; Salamanna, G.; Saltó, O.; Santi, L.; Sarkar, S.; Sartori, L.; Sato, K.; Savoy Navarro, A.; Scheidle, T.; Schlabach, P.; Schmidt, E. E.; Schmidt, M. A.; Schmidt, M. P.; Schmitt, M.; Schwarz, T.; Scodellaro, L.; Scott, A. L.; Scribano, A.; Scuri, F.; Sedov, A.; Seidel, S.; Seiya, Y.; Semenov, A.; Sexton Kennedy, L.; Sfyrla, A.; Shalhout, S. Z.; Shapiro, M. D.; Shears, T.; Shepard, P. F.; Sherman, D.; Shimojima, M.; Shochet, M.; Shon, Y.; Shreyber, I.; Sidoti, A.; Sinervo, P.; Sisakyan, A.; Slaughter, A. J.; Slaunwhite, J.; Sliwa, K.; Smith, J. R.; Snider, F. D.; Snihur, R.; Soderberg, M.; Soha, A.; Somalwar, S.; Sorin, V.; Spalding, J.; Spinella, F.; Spreitzer, T.; Squillacioti, P.; Stanitzki, M.; Denis, R. S. T.; Stelzer, B.; Stelzer Chilton, O.; Stentz, D.; Strologas, J.; Stuart, D.; Suh, J. S.; Sukhanov, A.; Sun, H.; Suslov, I.; Suzuki, T.; Taffard, A.; Takashima, R.; Takeuchi, Y.; Tanaka, R.; Tecchio, M.; Teng, P. K.; Terashi, K.; Thom, J.; Thompson, A. S.; Thompson, G. A.; Thomson, E.; Tipton, P.; Tiwari, V.; Tkaczyk, S.; Toback, D.; Tokar, S.; Tollefson, K.; Tomura, T.; Tonelli, D.; Torre, S.; Torretta, D.; Tourneur, S.; Trischuk, W.; Tu, Y.; Turini, N.; Ukegawa, F.; Uozumi, S.; Vallecorsa, S.; Van Remortel, N.; Varganov, A.; Vataga, E.; Vázquez, F.; Velev, G.; Vellidis, C.; Veszpremi, V.; Vidal, M.; Vidal, R.; Vila, I.; Vilar, R.; Vine, T.; Vogel, M.; Volobouev, I.; Volpi, G.; Würthwein, F.; Wagner, P.; Wagner, R. G.; Wagner, R. L.; Wagner Kuhr, J.; Wagner, W.; Wakisaka, T.; Wallny, R.; Wang, S. M.; Warburton, A.; Waters, D.; Weinberger, M.; W. C. Wester, Iii; Whitehouse, B.; Whiteson, D.; Wicklund, A. B.; Wicklund, E.; Williams, G.; Williams, H. H.; Wilson, P.; Winer, B. L.; Wittich, P.; Wolbers, S.; Wolfe, C.; Wright, T.; Wu, X.; Wynne, S. M.; Yagil, A.; Yamamoto, K.; Yamaoka, J.; Yamashita, T.; Yang, C.; Yang, U. K.; Yang, Y. C.; Yao, W. M.; Yeh, G. P.; Yoh, J.; Yorita, K.; Yoshida, T.; G. B., Yu; Yu, I.; S. S., Yu; Yun, J. C.; Zanello, L.; Zanetti, A.; Zaw, I.; Zhang, X.; Zheng, Y.; Zucchelli, Stefano

doi:10.1103/PhysRevD.77.072003

This paper describes the first measurement of b-quark fragmentation fractions into bottom hadrons in Run II of the Tevatron Collider at Fermilab. The result is based on a 360pb-1 sample of data collected with the CDF II detector in pp̄ collisions at s=1.96TeV. Semileptonic decays of B̄0, B-, and B̄s0 mesons, as well as Λb0 baryons, are reconstructed. For an effective bottom hadron pT threshold of 7GeV/c, the fragmentation fractions are measured to be fu/fd=1.054±0.018(stat)-0.045+0.025(sys)±0. 058(B), fs/(fu+fd)=0.160±0.005(stat)-0.010+0.011(sys)-0.034+0.057(B), and fΛb/(fu+fd)=0.281±0.012(stat)-0.056+0.058(sys)-0.087+0.128(B), where the uncertainty B is due to uncertainties on measured branching ratios. The value of fs/(fu+fd) agrees within one standard deviation with previous CDF measurements and the world average of this quantity, which is dominated by LEP measurements. However, the ratio fΛb/(fu+fd) is approximately twice the value previously measured at LEP. The approximately 2σ discrepancy is examined in terms of kinematic differences between the two production environments

CDF Collaboration, T. Aaltonen, J. Adelman, T. Akimoto, M. G. Albrow, B. Álvarez González, et al. (2008). Measurement of Ratios of Fragmentation Fractions for Bottom Hadrons in p anti-p Collisions at s**(1/2) = 1.96 TeV. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 77(7), 1-31 [10.1103/PhysRevD.77.072003].

Measurement of Ratios of Fragmentation Fractions for Bottom Hadrons in p anti-p Collisions at s**(1/2) = 1.96 TeV

CDF Collaboration;T. Aaltonen;J. Adelman;T. Akimoto;M. G. Albrow;B. Álvarez González;S. Amerio;D. Amidei;A. Anastassov;A. Annovi;J. Antos;M. Aoki;G. Apollinari;A. Apresyan;T. Arisawa;A. Artikov;W. Ashmanskas;A. Attal;A. Aurisano;F. Azfar;P. Azzi Bacchetta;P. Azzurri;N. Bacchetta;W. Badgett;A. Barbaro Galtieri;V. E. Barnes;B. A. Barnett;S. Baroiant;V. Bartsch;G. Bauer;P. H. Beauchemin;F. Bedeschi;P. Bednar;S. Behari;G. Bellettini;J. Bellinger;A. Belloni;D. Benjamin;A. Beretvas;J. Beringer;T. Berry;A. Bhatti;M. Binkley;D. Bisello;I. Bizjak;R. E. Blair;C. Blocker;B. Blumenfeld;A. Bocci;A. Bodek;V. Boisvert;G. Bolla;A. Bolshov;D. Bortoletto;J. Boudreau;A. Boveia;B. Brau;A. Bridgeman;L. Brigliadori;C. Bromberg;E. Brubaker;J. Budagov;H. S. Budd;S. Budd;K. Burkett;G. Busetto;P. Bussey;A. Buzatu;K. L. Byrum;S. Cabrera;M. Campanelli;M. Campbell;F. Canelli;A. Canepa;D. Carlsmith;R. Carosi;S. Carrillo;S. Carron;B. Casal;M. Casarsa;CASTRO, ANDREA;P. Catastini;D. Cauz;M. Cavalli Sforza;A. Cerri;L. Cerrito;S. H. Chang;Y. C. Chen;M. Chertok;G. Chiarelli;G. Chlachidze;F. Chlebana;K. Cho;D. Chokheli;J. P. Chou;G. Choudalakis;S. H. Chuang;K. Chung;W. H. Chung;Y. S. Chung;C. I. Ciobanu;M. A. Ciocci;A. Clark;D. Clark;G. Compostella;M. E. Convery;J. Conway;B. Cooper;K. Copic;M. Cordelli;G. Cortiana;F. Crescioli;C. Cuenca Almenar;J. Cuevas;R. Culbertson;J. C. Cully;D. Dagenhart;M. Datta;T. Davies;P. de Barbaro;S. De Cecco;A. Deisher;G. De Lentdecker;G. De Lorenzo;M. Dell’Orso;L. Demortier;J. Deng;DENINNO, MARIA MADDALENA;D. De Pedis;P. F. Derwent;G. P. Di Giovanni;C. Dionisi;B. Di Ruzza;J. R. Dittmann;M. D’Onofrio;S. Donati;P. Dong;J. Donini;T. Dorigo;S. Dube;J. Efron;R. Erbacher;D. Errede;S. Errede;R. Eusebi;H. C. Fang;S. Farrington;W. T. Fedorko;R. G. Feild;M. Feindt;J. P. Fernandez;C. Ferrazza;R. Field;G. Flanagan;R. Forrest;S. Forrester;M. Franklin;J. C. Freeman;I. Furic;M. Gallinaro;J. Galyardt;F. Garberson;J. E. Garcia;A. F. Garfinkel;K. Genser;H. Gerberich;D. Gerdes;S. Giagu;V. Giakoumopolou;P. Giannetti;K. Gibson;J. L. Gimmell;C. M. Ginsburg;N. Giokaris;M. Giordani;P. Giromini;M. Giunta;V. Glagolev;D. Glenzinski;M. Gold;N. Goldschmidt;A. Golossanov;G. Gomez;G. Gomez Ceballos;M. Goncharov;O. González;I. Gorelov;A. T. Goshaw;K. Goulianos;A. Gresele;S. Grinstein;C. Grosso Pilcher;R. C. Group;U. Grundler;J. Guimaraes da Costa;Z. Gunay Unalan;C. Haber;K. Hahn;S. R. Hahn;E. Halkiadakis;A. Hamilton;B. Y. Han;J. Y. Han;R. Handler;F. Happacher;K. Hara;D. Hare;M. Hare;S. Harper;R. F. Harr;R. M. Harris;M. Hartz;K. Hatakeyama;J. Hauser;C. Hays;M. Heck;A. Heijboer;B. Heinemann;J. Heinrich;C. Henderson;M. Herndon;J. Heuser;S. Hewamanage;D. Hidas;C. S. Hill;D. Hirschbuehl;A. Hocker;S. Hou;M. Houlden;S. C. Hsu;B. T. Huffman;R. E. Hughes;U. Husemann;J. Huston;J. Incandela;G. Introzzi;M. Iori;A. Ivanov;B. Iyutin;E. James;B. Jayatilaka;D. Jeans;E. J. Jeon;S. Jindariani;W. Johnson;M. Jones;K. K. Joo;S. Y. Jun;J. E. Jung;T. R. Junk;T. Kamon;D. Kar;P. E. Karchin;Y. Kato;R. Kephart;U. Kerzel;V. Khotilovich;B. Kilminster;D. H. Kim;H. S. Kim;J. E. Kim;M. J. Kim;S. B. Kim;S. H. Kim;Y. K. Kim;N. Kimura;L. Kirsch;S. Klimenko;M. Klute;B. Knuteson;B. R. Ko;S. A. Koay;K. Kondo;D. J. Kong;J. Konigsberg;A. Korytov;A. V. Kotwal;J. Kraus;M. Kreps;J. Kroll;N. Krumnack;M. Kruse;V. Krutelyov;T. Kubo;S. E. Kuhlmann;T. Kuhr;N. P. Kulkarni;Y. Kusakabe;S. Kwang;A. T. Laasanen;S. Lai;S. Lami;S. Lammel;M. Lancaster;R. L. Lander;K. Lannon;A. Lath;G. Latino;I. Lazzizzera;T. LeCompte;J. Lee;J. Lee;Y. J. Lee;S. W. Lee;R. Lefèvre;N. Leonardo;S. Leone;S. Levy;J. D. Lewis;C. Lin;C. S. Lin;J. Linacre;M. Lindgren;E. Lipeles;A. Lister;D. O. Litvintsev;T. Liu;N. S. Lockyer;A. Loginov;M. Loreti;L. Lovas;R. S. Lu;D. Lucchesi;J. Lueck;C. Luci;P. Lujan;P. Lukens;G. Lungu;L. Lyons;J. Lys;R. Lysak;E. Lytken;P. Mack;D. MacQueen;R. Madrak;K. Maeshima;K. Makhoul;T. Maki;P. Maksimovic;S. Malde;S. Malik;G. Manca;A. Manousakis;F. Margaroli;C. Marino;C. P. Marino;A. Martin;M. Martin;V. Martin;M. Martínez;R. Martínez Ballarín;T. Maruyama;P. Mastrandrea;T. Masubuchi;M. E. Mattson;P. Mazzanti;K. S. McFarland;P. McIntyre;R. McNulty;A. Mehta;P. Mehtala;S. Menzemer;A. Menzione;P. Merkel;C. Mesropian;A. Messina;T. Miao;N. Miladinovic;J. Miles;R. Miller;C. Mills;M. Milnik;A. Mitra;G. Mitselmakher;H. Miyake;S. Moed;MOGGI, NICCOLO';C. S. Moon;R. Moore;M. Morello;P. Movilla Fernandez;J. Mülmenstädt;A. Mukherjee;T.h. Muller;R. Mumford;P. Murat;MUSSINI, MANUEL;J. Nachtman;Y. Nagai;A. Nagano;J. Naganoma;K. Nakamura;I. Nakano;A. Napier;V. Necula;C. Neu;M. S. Neubauer;J. Nielsen;L. Nodulman;M. Norman;O. Norniella;E. Nurse;S. H. Oh;Y. D. Oh;I. Oksuzian;T. Okusawa;R. Oldeman;R. Orava;K. Osterberg;S. Pagan Griso;C. Pagliarone;E. Palencia;V. Papadimitriou;A. Papaikonomou;A. A. Paramonov;B. Parks;S. Pashapour;J. Patrick;G. Pauletta;M. Paulini;C. Paus;D. E. Pellett;A. Penzo;T. J. Phillips;G. Piacentino;J. Piedra;L. Pinera;K. Pitts;C. Plager;L. Pondrom;X. Portell;O. Poukhov;N. Pounder;F. Prakoshyn;A. Pronko;J. Proudfoot;F. Ptohos;G. Punzi;J. Pursley;J. Rademacker;A. Rahaman;V. Ramakrishnan;N. Ranjan;I. Redondo;B. Reisert;V. Rekovic;P. Renton;M. Rescigno;S. Richter;RIMONDI, FRANCO;L. Ristori;A. Robson;T. Rodrigo;E. Rogers;S. Rolli;R. Roser;M. Rossi;R. Rossin;P. Roy;A. Ruiz;J. Russ;V. Rusu;H. Saarikko;A. Safonov;W. K. Sakumoto;G. Salamanna;O. Saltó;L. Santi;S. Sarkar;L. Sartori;K. Sato;A. Savoy Navarro;T. Scheidle;P. Schlabach;E. E. Schmidt;M. A. Schmidt;M. P. Schmidt;M. Schmitt;T. Schwarz;L. Scodellaro;A. L. Scott;A. Scribano;F. Scuri;A. Sedov;S. Seidel;Y. Seiya;A. Semenov;L. Sexton Kennedy;A. Sfyrla;S. Z. Shalhout;M. D. Shapiro;T. Shears;P. F. Shepard;D. Sherman;M. Shimojima;M. Shochet;Y. Shon;I. Shreyber;A. Sidoti;P. Sinervo;A. Sisakyan;A. J. Slaughter;J. Slaunwhite;K. Sliwa;J. R. Smith;F. D. Snider;R. Snihur;M. Soderberg;A. Soha;S. Somalwar;V. Sorin;J. Spalding;F. Spinella;T. Spreitzer;P. Squillacioti;M. Stanitzki;R. S.t. Denis;B. Stelzer;O. Stelzer Chilton;D. Stentz;J. Strologas;D. Stuart;J. S. Suh;A. Sukhanov;H. Sun;I. Suslov;T. Suzuki;A. Taffard;R. Takashima;Y. Takeuchi;R. Tanaka;M. Tecchio;P. K. Teng;K. Terashi;J. Thom;A. S. Thompson;G. A. Thompson;E. Thomson;P. Tipton;V. Tiwari;S. Tkaczyk;D. Toback;S. Tokar;K. Tollefson;T. Tomura;D. Tonelli;S. Torre;D. Torretta;S. Tourneur;W. Trischuk;Y. Tu;N. Turini;F. Ukegawa;S. Uozumi;S. Vallecorsa;N. van Remortel;A. Varganov;E. Vataga;F. Vázquez;G. Velev;C. Vellidis;V. Veszpremi;M. Vidal;R. Vidal;I. Vila;R. Vilar;T. Vine;M. Vogel;I. Volobouev;G. Volpi;F. Würthwein;P. Wagner;R. G. Wagner;R. L. Wagner;J. Wagner Kuhr;W. Wagner;T. Wakisaka;R. Wallny;S. M. Wang;A. Warburton;D. Waters;M. Weinberger;W. C. Wester, III;B. Whitehouse;D. Whiteson;A. B. Wicklund;E. Wicklund;G. Williams;H. H. Williams;P. Wilson;B. L. Winer;P. Wittich;S. Wolbers;C. Wolfe;T. Wright;X. Wu;S. M. Wynne;A. Yagil;K. Yamamoto;J. Yamaoka;T. Yamashita;C. Yang;U. K. Yang;Y. C. Yang;W. M. Yao;G. P. Yeh;J. Yoh;K. Yorita;T. Yoshida;G. B. Yu;I. Yu;S. S. Yu;J. C. Yun;L. Zanello;A. Zanetti;I. Zaw;X. Zhang;Y. Zheng;ZUCCHELLI, STEFANO

2008

Abstract

This paper describes the first measurement of b-quark fragmentation fractions into bottom hadrons in Run II of the Tevatron Collider at Fermilab. The result is based on a 360pb-1 sample of data collected with the CDF II detector in pp̄ collisions at s=1.96TeV. Semileptonic decays of B̄0, B-, and B̄s0 mesons, as well as Λb0 baryons, are reconstructed. For an effective bottom hadron pT threshold of 7GeV/c, the fragmentation fractions are measured to be fu/fd=1.054±0.018(stat)-0.045+0.025(sys)±0. 058(B), fs/(fu+fd)=0.160±0.005(stat)-0.010+0.011(sys)-0.034+0.057(B), and fΛb/(fu+fd)=0.281±0.012(stat)-0.056+0.058(sys)-0.087+0.128(B), where the uncertainty B is due to uncertainties on measured branching ratios. The value of fs/(fu+fd) agrees within one standard deviation with previous CDF measurements and the world average of this quantity, which is dominated by LEP measurements. However, the ratio fΛb/(fu+fd) is approximately twice the value previously measured at LEP. The approximately 2σ discrepancy is examined in terms of kinematic differences between the two production environments

Scheda breve

Scheda completa

Scheda completa (DC)

	Anno
	
				2008
			
	Rivista
	
				PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY
			
	Codice DOI
	
				https://dx.doi.org/10.1103/PhysRevD.77.072003
			
	Citazione
	
				CDF Collaboration,  T. Aaltonen,  J. Adelman,  T. Akimoto,  M. G. Albrow,  B. Álvarez González, et al. (2008). Measurement of Ratios of Fragmentation Fractions for Bottom Hadrons in p anti-p Collisions at s**(1/2) = 1.96 TeV. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 77(7), 1-31 [10.1103/PhysRevD.77.072003].
			
	Tutti gli autori
	
						CDF Collaboration; T. Aaltonen; J. Adelman; T. Akimoto; M. G. Albrow; B. Álvarez González; S. Amerio; D. Amidei; A. Anastassov; A. Annovi; J. Antos; M...espandi
						
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/71806

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