Measurement of b-jet Shapes in Inclusive Jet Production 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.; Apollinari, G.; Apresyan, A.; Arisawa, T.; Artikov, A.; Ashmanskas, W.; Attal, A.; Aurisano, A.; Azfar, F.; Azzurri, P.; Badgett, W.; Barbaro Galtieri, A.; Barnes, V. E.; Barnett, B. A.; Bartsch, V.; Bauer, G.; Beauchemin, P. H.; Bedeschi, F.; Bednar, P.; Beecher, D.; Behari, S.; Bellettini, G.; Bellinger, J.; Benjamin, D.; Beretvas, A.; Beringer, J.; Bhatti, A.; Binkley, M.; Bisello, D.; Bizjak, I.; Blair, R. E.; Blocker, C.; Blumenfeld, B.; Bocci, A.; Bodek, A.; Boisvert, V.; Bolla, G.; 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.; Calancha, C.; 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.; Cavaliere, V.; 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.; Copic, K.; Cordelli, M.; Cortiana, G.; Cox, D. J.; 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 Lorenzo, G.; Dell’Orso, M.; Deluca, C.; Demortier, L.; Deng, J.; Deninno, MARIA MADDALENA; 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.; Elagin, A.; 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.; 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.; Gessler, A.; Giagu, S.; Giakoumopoulou, V.; Giannetti, P.; Gibson, K.; Gimmell, J. L.; Ginsburg, C. M.; Giokaris, N.; Giordani, M.; Giromini, P.; Giunta, M.; Giurgiu, G.; 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.; 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.; James, E.; Jayatilaka, B.; Jeon, E. J.; Jha, M. K.; 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.; Keung, J.; 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.; Knuteson, B.; B. R., Ko; Koay, S. A.; Kondo, K.; Kong, D. J.; Konigsberg, J.; Korytov, A.; Kotwal, A. V.; Kreps, M.; Kroll, J.; Krop, D.; Krumnack, N.; Kruse, M.; Krutelyov, V.; Kubo, T.; Kuhr, T.; Kulkarni, N. P.; Kurata, M.; Kusakabe, Y.; Kwang, S.; Laasanen, A. T.; Lami, S.; Lammel, S.; Lancaster, M.; Lander, R. L.; Lannon, K.; Lath, A.; Latino, G.; Lazzizzera, I.; Lecompte, T.; Lee, E.; Lee, S. W.; Leone, S.; Lewis, J. D.; Lin, C. S.; Linacre, J.; Lindgren, M.; Lipeles, E.; Lister, A.; Litvintsev, D. O.; Liu, C.; 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 Katsikakis, A.; Margaroli, F.; Marino, C.; Marino, C. P.; Martin, A.; 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.; Menzione, A.; Merkel, P.; Mesropian, C.; Miao, T.; Miladinovic, N.; Miller, R.; Mills, C.; Milnik, M.; Mitra, A.; Mitselmakher, G.; Miyake, H.; Moggi, Niccolo'; Moon, C. S.; Moore, R.; Morello, M. J.; Morlok, J.; 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.; Oakes, L.; S. H., Oh; Y. D., Oh; Oksuzian, I.; Okusawa, T.; 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.; Pianori, E.; Pinera, L.; Pitts, K.; Plager, C.; Pondrom, L.; Poukhov, O.; Pounder, N.; Prakoshyn, F.; Pronko, A.; Proudfoot, J.; Ptohos, F.; Pueschel, E.; 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.; Rodriguez, 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.; Saltó, O.; Santi, L.; Sarkar, S.; Sartori, L.; Sato, K.; Savoy Navarro, A.; Scheidle, T.; Schlabach, P.; Schmidt, A.; 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.; Shears, T.; Shepard, P. F.; Sherman, D.; Shimojima, M.; Shiraishi, S.; 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.; Soha, A.; Somalwar, S.; Sorin, V.; Spalding, J.; 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.; 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.; Totaro, P.; Tourneur, S.; Tu, Y.; Turini, N.; Ukegawa, F.; 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.; 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.78.072005

We present a measurement of the shapes of b-jets using 300 pb(-1) of data obtained with the upgraded Collider Detector at Fermilab (CDF II) in p(p)overbar collisions at center-of-mass energy root s=1.96 TeV. This measurement covers a wide transverse momentum range, from 52 to 300 GeV/c. Samples of heavy-flavor enhanced jets together with inclusive jets are used to extract the average shapes of b-jets. The b-jets are expected to be broader than inclusive jets. Moreover, b-jets containing a single b-quark are expected to be narrower than those containing a b(b)overbar pair from gluon splitting. The measured b-jet shapes are found to be significantly broader than expected from the PYTHIA and HERWIG Monte Carlo simulations. This effect may arise from an underestimation of the fraction of b-jets originating from gluon splitting in these simulations. The jet shape distributions provided in this paper could be compared to any full Monte Carlo simulation and could be used to further constrain the various parameters.

CDF Collaboration, T. Aaltonen, J. Adelman, T. Akimoto, M. G. Albrow, B. Álvarez González, et al. (2008). Measurement of b-jet Shapes in Inclusive Jet Production in p anti-p Collisions at s**(1/2) = 1.96 TeV. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 78(7), 1-17 [10.1103/PhysRevD.78.072005].

Measurement of b-jet Shapes in Inclusive Jet Production 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;G. Apollinari;A. Apresyan;T. Arisawa;A. Artikov;W. Ashmanskas;A. Attal;A. Aurisano;F. Azfar;P. Azzurri;W. Badgett;A. Barbaro Galtieri;V. E. Barnes;B. A. Barnett;V. Bartsch;G. Bauer;P. H. Beauchemin;F. Bedeschi;P. Bednar;D. Beecher;S. Behari;G. Bellettini;J. Bellinger;D. Benjamin;A. Beretvas;J. Beringer;A. Bhatti;M. Binkley;D. Bisello;I. Bizjak;R. E. Blair;C. Blocker;B. Blumenfeld;A. Bocci;A. Bodek;V. Boisvert;G. Bolla;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;C. Calancha;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;V. Cavaliere;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;K. Copic;M. Cordelli;G. Cortiana;D. J. Cox;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 Lorenzo;M. Dell’Orso;C. Deluca;L. Demortier;J. Deng;DENINNO, MARIA MADDALENA;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;A. Elagin;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;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;A. Gessler;S. Giagu;V. Giakoumopoulou;P. Giannetti;K. Gibson;J. L. Gimmell;C. M. Ginsburg;N. Giokaris;M. Giordani;P. Giromini;M. Giunta;G. Giurgiu;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;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;E. James;B. Jayatilaka;E. J. Jeon;M. K. Jha;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;J. Keung;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;B. Knuteson;B. R. Ko;S. A. Koay;K. Kondo;D. J. Kong;J. Konigsberg;A. Korytov;A. V. Kotwal;M. Kreps;J. Kroll;D. Krop;N. Krumnack;M. Kruse;V. Krutelyov;T. Kubo;T. Kuhr;N. P. Kulkarni;M. Kurata;Y. Kusakabe;S. Kwang;A. T. Laasanen;S. Lami;S. Lammel;M. Lancaster;R. L. Lander;K. Lannon;A. Lath;G. Latino;I. Lazzizzera;T. LeCompte;E. Lee;S. W. Lee;S. Leone;J. D. Lewis;C. S. Lin;J. Linacre;M. Lindgren;E. Lipeles;A. Lister;D. O. Litvintsev;C. Liu;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 Katsikakis;F. Margaroli;C. Marino;C. P. Marino;A. 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;A. Menzione;P. Merkel;C. Mesropian;T. Miao;N. Miladinovic;R. Miller;C. Mills;M. Milnik;A. Mitra;G. Mitselmakher;H. Miyake;MOGGI, NICCOLO';C. S. Moon;R. Moore;M. J. Morello;J. Morlok;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;L. Oakes;S. H. Oh;Y. D. Oh;I. Oksuzian;T. Okusawa;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;E. Pianori;L. Pinera;K. Pitts;C. Plager;L. Pondrom;O. Poukhov;N. Pounder;F. Prakoshyn;A. Pronko;J. Proudfoot;F. Ptohos;E. Pueschel;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;T. Rodriguez;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;O. Saltó;L. Santi;S. Sarkar;L. Sartori;K. Sato;A. Savoy Navarro;T. Scheidle;P. Schlabach;A. Schmidt;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;T. Shears;P. F. Shepard;D. Sherman;M. Shimojima;S. Shiraishi;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;A. Soha;S. Somalwar;V. Sorin;J. Spalding;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;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;P. Totaro;S. Tourneur;Y. Tu;N. Turini;F. Ukegawa;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;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

We present a measurement of the shapes of b-jets using 300 pb(-1) of data obtained with the upgraded Collider Detector at Fermilab (CDF II) in p(p)overbar collisions at center-of-mass energy root s=1.96 TeV. This measurement covers a wide transverse momentum range, from 52 to 300 GeV/c. Samples of heavy-flavor enhanced jets together with inclusive jets are used to extract the average shapes of b-jets. The b-jets are expected to be broader than inclusive jets. Moreover, b-jets containing a single b-quark are expected to be narrower than those containing a b(b)overbar pair from gluon splitting. The measured b-jet shapes are found to be significantly broader than expected from the PYTHIA and HERWIG Monte Carlo simulations. This effect may arise from an underestimation of the fraction of b-jets originating from gluon splitting in these simulations. The jet shape distributions provided in this paper could be compared to any full Monte Carlo simulation and could be used to further constrain the various parameters.

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				2008
			
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				PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY
			
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				https://dx.doi.org/10.1103/PhysRevD.78.072005
			
	Citazione
	
				CDF Collaboration,  T. Aaltonen,  J. Adelman,  T. Akimoto,  M. G. Albrow,  B. Álvarez González, et al. (2008). Measurement of b-jet Shapes in Inclusive Jet Production in p anti-p Collisions at s**(1/2) = 1.96 TeV. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 78(7), 1-17 [10.1103/PhysRevD.78.072005].
			
	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; G...espandi
						
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/71769

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