Observation and Mass Measurement of the BaryonΞb−

6533b833fe1ef96bd129c2b5

RESEARCH PRODUCT

Observation and Mass Measurement of the BaryonΞb−

T. Aaltonen A. Abulencia Helsinki I.n.s.t. Of Phys J. Adelman Illinois U Urbana Anthony Allen Affolder Chicago U Efi T. Akimoto Uc Santa Barbara Michael G. Albrow Tsukuba U S. Amerio Fermilab Dante E. Amidei Padua U A. Anastassov Michigan U K. Anikeev Rutgers U Piscataway A. Annovi Fermilab J. Antos Frascati M. Aoki Comenius U G. Apollinari Tsukuba U T. Arisawa Fermilab A. Artikov Waseda U William Joseph Ashmanskas Jinr Dubna A. Attal Fermilab Adam Aurisano Ifae Barcelona F. Azfar Texas A. M P. Azzi Bacchetta Oxford U Paolo Azzurri Padua U Nicola Bacchetta Pisa U W. Badgett Padua U Angela Barbaro Galtieri Fermilab V. E. Barnes Berkeley Lbl Bruce A. Barnett Purdue U S. Baroiant Johns Hopkins U V. Bartsch Davis Uc G. Bauer University C.o.l.l. London P. H. Beauchemin Lns Mit Franco Bedeschi Mcgill U S. Behari Pisa U Giorgio Bellettini Johns Hopkins U James Nugent Bellinger Pisa U A. Belloni Wisconsin U Madison Douglas P. Benjamin Lns Mit Andrew F. Beretvas Duke U Juerg Beringer Fermilab T. Berry Berkeley Lbl Anwar Ahmad Bhatti Liverpool U Morris Binkley Rockefeller U Dario Bisello Fermilab Ilija Bizjak Padua U Robert Eugene Blair University C.o.l.l. London Craig Alan Blocker Argonne Barry J. Blumenfeld Brandeis U Andrea Bocci Johns Hopkins U Arie Bodek Duke U Veronique Boisvert G. Bolla Rochester U A. Bolshov Purdue U D. Bortoletto Lns Mit J. Boudreau Purdue U A. Boveia Pittsburgh U Benjamin P. Brau Luca Brigliadori Uc Santa Barbara Carl Michael Bromberg Bologna U Erik Matthews Brubaker Michigan State U J. Budagov Chicago U Efi H. S. Budd Jinr Dubna Sarah Rebecca Budd Rochester U K. Burkett Illinois U Urbana Giovanni Busetto Fermilab P. Bussey Padua U A. Buzatu Glasgow U K. L. Byrum Mcgill U S. Cabrera Argonne M. Campanelli Duke U M. Campbell Geneva U Maria Florencia Canelli Michigan U A. Canepa Fermilab S. Carrillo Pennsylvania U Duncan L. Carlsmith Florida U R. Carosi Wisconsin U Madison S. Carron Pisa U Bruno Casal Mcgill U M. Casarsa Cantabria U Santander A. Castro Udine Infn Pierluigi Catastini Bologna U D. Cauz Pisa U Matteo Cavalli Sforza Udine Infn Alessandro Cerri Ifae Barcelona Lucio Cerrito Berkeley Lbl Sanghyeon Chang University C.o.l.l. London Y. C. Chen Kyungpook N.a.t.l. U Maxwell Benjamin Chertok Taiwan I.n.s.t. Phys Giorgio Chiarelli Davis Uc G. Chlachidze Pisa U F. Chlebana I. Cho Fermilab K. Cho D. Chokheli Kyungpook N.a.t.l. U J. P. Chou Jinr Dubna Georgios Choudalakis Harvard U S. H. Chuang Lns Mit K. Chung Rutgers U Piscataway W. H. Chung Carnegie Mellon U Yeon Sei Chung Wisconsin U Madison M. Cilijak Rochester U Catalin Irinel Ciobanu Pisa U M. A. Ciocci Illinois U Urbana A. Clark Pisa U D. Clark Geneva U Mircea Norocel Coca Brandeis U G. Compostella Duke U M. E. Convery Padua U John S. Conway Rockefeller U B. Cooper Davis Uc Katherine Copic University C.o.l.l. London M. Cordelli Michigan U G. Cortiana Frascati F. Crescioli Padua U C. Cuenca Almenar Pisa U J. Cuevas Davis Uc Ray L. Culbertson Cantabria U Santander J. C. Cully Fermilab S. Daronco Michigan U M. Datta Padua U Saverio D'auria Fermilab T. Davies William David Dagenhart Glasgow U P. De Barbaro Fermilab S. De Cecco Rochester U A. Deisher Rome U G. De Lentdecker Berkeley Lbl G. De Lorenzo Rochester U Mauro Dell'orso Ifae Barcelona F. Delli Paoli Pisa U Luc Demortier Padua U J. Deng Rockefeller U M. Deninno Duke U D. De Pedis Bologna U P. F. Derwent Rome U G. P. Di Giovanni Fermilab C. Dionisi Paris U Vi Vii Rome U Jay R. Dittmann Udine Infn M. D'onofrio Baylor U M.a.t.h. Dept Christian Doerr Ifae Barcelona S. Donati Karlsruhe U Ekp P. Dong Pisa U J. Donini Ucla T. Dorigo S. Dube Padua U Jonathan Zvi Efron Rutgers U Piscataway Robin D. Erbacher Ohio State U D. Errede Davis Uc Steven Michael Errede Ricardo Eusebi Illinois U Urbana H. C. Fang Fermilab Sinead Marie Farrington Berkeley Lbl I. Fedorko Liverpool U W. T. Fedorko Pisa U R. G. Feild Chicago U Efi Michael Feindt Yale U J. P. Fernandez Karlsruhe U Ekp R. Field Ciemat Madrid G. Flanagan Florida U R. Forrest Purdue U S. Forrester M. Franklin Davis Uc J. C. Freeman Harvard U I. Furic Berkeley Lbl Michele Gallinaro Chicago U Efi J. Galyardt Rockefeller U J. E. Garcia Carnegie Mellon U F. Garberson Pisa U A. F. Garfinkel Uc Santa Barbara C. Gay Purdue U H. Gerberich Yale U David W. Gerdes Illinois U Urbana Stefano Giagu Michigan U P. Giannetti Rome U K. Gibson Pisa U Jennifer Lindsay Gimmell Pittsburgh U Camille M. Ginsburg Rochester U N. Giokaris Fermilab Mario Paolo Giordani Jinr Dubna P. Giromini Udine Infn M. Giunta Frascati Gavril A. Giurgiu Pisa U V. Glagolev Johns Hopkins U Douglas A. Glenzinski Jinr Dubna M. Gold Fermilab Nathan Joel Goldschmidt New Mexico U Joel Goldstein Florida U Alexander Golossanov Oxford U G. Gomez Fermilab G. Gomez Ceballos Cantabria U Santander Maxim T. Goncharov Lns Mit O. Gonzalez Texas A. M Igor V. Gorelov Ciemat Madrid Alfred T. Goshaw New Mexico U Konstantin Goulianos Duke U A. Gresele Rockefeller U Sebastian Grinstein Padua U C. Grosso Pilcher Harvard U Robert Craig Group Chicago U Efi Ulysses Grundler Fermilab Joao Pedro Barreiro Guimaraes Da Costa Illinois U Urbana Z. Gunay Unalan Harvard U Carl H. Haber Michigan State U K. Hahn Berkeley Lbl Stephen R. Hahn Lns Mit E. Halkiadakis Fermilab A. Hamilton Rutgers U Piscataway B. Y. Han Geneva U J. Y. Han R. Handler Rochester U F. Happacher Wisconsin U Madison K. Hara Frascati D. Hare Tsukuba U M. Hare Rutgers U Piscataway S. Harper Tufts U Robert Francis Harr Oxford U R. M. Harris Wayne State U M. Hartz Fermilab Kenichi Hatakeyama Pittsburgh U J. Hauser Rockefeller U Christopher Paul Hays Ucla M. Heck Oxford U A. Heijboer Karlsruhe U Ekp B. Heinemann Pennsylvania U Joel Heinrich Berkeley Lbl C. Henderson Pennsylvania U M. Herndon Lns Mit J. Heuser Wisconsin U Madison Dean Andrew Hidas Karlsruhe U Ekp Christopher S. Hill Duke U D. Hirschbuehl Uc Santa Barbara James Andrew Hocker Karlsruhe U Ekp A. Holloway Fermilab S. Hou Harvard U Michael A. Houlden Taiwan I.n.s.t. Phys S. C. Hsu Liverpool U Brian T. Huffman Uc San Diego R. E. Hughes Oxford U Ulrich Husemann Ohio State U J. Huston Yale U Joseph R. Incandela Michigan State U G. Introzzi Uc Santa Barbara M. Iori Pisa U A. Ivanov Rome U B. Iyutin Davis Uc Eric B. James Lns Mit D. Jang Fermilab Bodhitha Anjalike Jayatilaka Rutgers U Piscataway D. Jeans Duke U E. J. Jeon Rome U Sergo Jindariani Kyungpook N.a.t.l. U W. Johnson Florida U M. Jones Davis Uc K. K. Joo Purdue U S. Y. Jun Kyungpook N.a.t.l. U J. E. Jung Carnegie Mellon U Thomas R. Junk Kyungpook N.a.t.l. U Teruki Kamon Illinois U Urbana Paul E. Karchin Texas A. M Y. Kato Wayne State U Y. Kemp Osaka City U R. Kephart Karlsruhe U Ekp U. Kerzel Fermilab V. Khotilovich Karlsruhe U Ekp B. Kilminster Texas A. M D. H. Kim Ohio State U H. S. Kim J. E. Kim M. J. Kim Kyungpook N.a.t.l. U S. B. Kim Fermilab S. H. Kim Kyungpook N.a.t.l. U Young Kee Kim Tsukuba U N. Kimura Chicago U Efi Lawrence E. Kirsch Tsukuba U Sergey Klimenko Brandeis U Markus Klute Florida U Bruce Owen Knuteson Byeongrok Ko Lns Mit K. Kondo Duke U Dae Jung Kong Waseda U Jacobo Konigsberg Kyungpook N.a.t.l. U A. Korytov Ashutosh Vijay Kotwal Florida U Aafke Christine Kraan Duke U J. Kraus Pennsylvania U M. Kreps Illinois U Urbana J. Kroll Karlsruhe U Ekp N. Krumnack Pennsylvania U Mark Charles Kruse Baylor U M.a.t.h. Dept Vyacheslav E. Krutelyov Duke U T. Kubo Uc Santa Barbara S. E. Kuhlmann Tsukuba U T. Kuhr Argonne N. P. Kulkarni Karlsruhe U Ekp Y. Kusakabe Wayne State U S. Kwang Waseda U Alvin Toivo Laasanen Chicago U Efi S. Lai Purdue U Stefano Lami Mcgill U S. Lammel Pisa U M. Lancaster Fermilab R. L. Lander University C.o.l.l. London K. Lannon Davis Uc A. Lath Ohio State U G. Latino Rutgers U Piscataway I. Lazzizzera Pisa U Thomas Joseph Lecompte Padua U J. Lee Argonne J. Lee Rochester U Y. J. 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Martin Johns Hopkins U M. Martinez Glasgow U R. Martinez Ballarin Ifae Barcelona T. Maruyama Ciemat Madrid P. Mastrandrea Tsukuba U Tatsuya Masubuchi Rome U H. Matsunaga M. E. Mattson Tsukuba U R. Mazini Wayne State U Paolo Mazzanti Mcgill U Kevin S. Mcfarland Bologna U Peter M. Mcintyre Rochester U R. Mcnulty Texas A. M A. Mehta P. Mehtala Liverpool U S. Menzemer Helsinki I.n.s.t. Of Phys A. Menzione Cantabria U Santander P. Merkel Pisa U Christina Mesropian Purdue U A. Messina Rockefeller U Ting Miao Michigan State U N. Miladinovic Fermilab J. Miles Brandeis U R. Miller Lns Mit C. Mills Michigan State U Michael Milnik Uc Santa Barbara A. Mitra Karlsruhe U Ekp Guenakh Mitselmakher Taiwan I.n.s.t. Phys A. Miyamoto Florida U S. Moed Tsukuba Kek N. Moggi Geneva U B. Mohr Bologna U C. S. Moon Ucla R. Moore Kyungpook N.a.t.l. U M. Morello Fermilab Pedro A. Movilla Fernandez Pisa U J. Mulmenstadt A. Mukherjee Berkeley Lbl T.h. Muller Fermilab R. Mumford Karlsruhe U Ekp P. Murat Johns Hopkins U M. Mussini Fermilab Jane Marie Nachtman Bologna U A. Nagano Fermilab Junji Naganoma Tsukuba U K. Nakamura Waseda U I. Nakano Tsukuba U Austin Napier Okayama U V. Necula Tufts U Christopher C. Neu Duke U Mark Stephen Neubauer Pennsylvania U Jason A. Nielsen Uc San Diego L. Nodulman Berkeley Lbl Olga Norniella Argonne E. Nurse Ifae Barcelona S. H. Oh University C.o.l.l. London Y. D. Oh Duke U I. Oksuzian Kyungpook N.a.t.l. U T. Okusawa Florida U Rudolf Oldeman Osaka City U Risto Orava Liverpool U K. Osterberg C. Pagliarone Helsinki I.n.s.t. Of Phys E. Palencia Pisa U Vaia Papadimitriou Cantabria U Santander A. Papaikonomou Fermilab A. A. Paramonov Karlsruhe U Ekp B. Parks Chicago U Efi Shabnaz Pashapour Alamdari Ohio State U J. Patrick Mcgill U G. Pauletta Fermilab M. Paulini Udine Infn Christoph M. E. Paus Carnegie Mellon U D. E. Pellett Lns Mit A. Penzo Davis Uc Thomas J. Phillips Udine Infn G. Piacentino Duke U Jonatan Piedra Pisa U L. Pinera Paris U Vi Vii K. Pitts Florida U Charles Plager Illinois U Urbana Lee Pondrom Ucla X. Portell Wisconsin U Madison O. Poukhov Ifae Barcelona N. Pounder Jinr Dubna F. Prakoshyn Oxford U A. Pronko Jinr Dubna James Proudfoot Fermilab F. Ptohos Argonne G. Punzi Frascati Jennifer M. Pursley Pisa U J. Rademacker Johns Hopkins U A. Rahaman Oxford U V. Ramakrishnan Pittsburgh U N. Ranjan Wisconsin U Madison I. Redondo Purdue U B. Reisert Ciemat Madrid V. Rekovic Fermilab Peter Renton New Mexico U Marco Rescigno Oxford U S. Richter Rome U F. Rimondi Karlsruhe U Ekp L. Ristori Bologna U A. Robson Pisa U T. Rodrigo Glasgow U E. Rogers Cantabria U Santander Simona Rolli Illinois U Urbana Robert M. Roser Tufts U M. Rossi Fermilab R. Rossin Udine Infn P. Roy Uc Santa Barbara A. Ruiz Mcgill U J. Russ Cantabria U Santander V. Rusu Carnegie Mellon U H. Saarikko Chicago U Efi Alexei Nikolayevich Safonov Helsinki I.n.s.t. Of Phys W. K. Sakumoto Texas A. M G. Salamanna Rochester U O. Salto Rome U L. Santi Ifae Barcelona S. Sarkar Udine Infn L. Sartori Rome U K. Sato Pisa U P. Savard Fermilab A. Savoy Navarro Mcgill U T. Scheidle Paris U Vi Vii P. Schlabach Karlsruhe U Ekp Eugene E. Schmidt M. P. Schmidt Fermilab M. Schmitt Yale U T. Schwarz Northwestern U L. Scodellaro Davis Uc Adam Liddle Scott Cantabria U Santander A. Scribano Uc Santa Barbara F. Scuri A. Sedov Pisa U Sally Carol Seidel Purdue U Yoshihiro Seiya New Mexico U A. Semenov Osaka City U Elizabeth Sexton Kennedy Jinr Dubna A. Sfyrla Fermilab S. Z. Shalhout Geneva U M. D. Shapiro Wayne State U T. Shears Berkeley Lbl P. F. Shepard Liverpool U D. Sherman Pittsburgh U M. Shimojima Harvard U Melvyn J. Shochet Tsukuba U Y. Shon Chicago U Efi I. Shreyber Wisconsin U Madison A. Sidoti Geneva U Pekka K. Sinervo Pisa U A. Sisakyan Mcgill U A. Jean Slaughter Jinr Dubna J. Slaunwhite Fermilab K. Sliwa Ohio State U J. R. Smith Tufts U F. D. Snider Davis Uc R. Snihur Fermilab M. Soderberg Mcgill U A. Soha Michigan U Sunil V. Somalwar Davis Uc Maria Veronica Sorin Rutgers U Piscataway J. Spalding Michigan State U F. Spinella Fermilab T. Spreitzer Pisa U P. Squillacioti Mcgill U M. Stanitzki Pisa U A. Staveris Polykalas Yale U Richard Dante S.t. Denis Pisa U Bernd Stelzer Glasgow U Oliver Stelzer Chilton Ucla D. Stentz Oxford U John Strologas Northwestern U D. Stuart New Mexico U J. S. Suh Uc Santa Barbara A. Sukhanov Kyungpook N.a.t.l. U H. Sun Florida U I. Suslov Tufts U T. Suzuki Jinr Dubna Anyes Taffard Tsukuba U Ryuichi Takashima Illinois U Urbana Y. Takeuchi Okayama U R. Tanaka Tsukuba U M. Tecchio Okayama U P. K. Teng Michigan U Koji Terashi Taiwan I.n.s.t. Phys Julia Thom Rockefeller U Alan Stan Thompson Fermilab E. Thomson Glasgow U Paul Louis Tipton Pennsylvania U V. Tiwari Yale U S. Tkaczyk Carnegie Mellon U David A. Toback Fermilab S. Tokar Texas A. M K. Tollefson Comenius U Tomonobu Tomura Michigan State U Diego Tonelli Tsukuba U S. Torre Pisa U D. Torretta Frascati S. Tourneur Fermilab William Trischuk Paris U Vi Vii S. Tsuno Mcgill U Y. Tu Okayama U N. Turini Pennsylvania U Fumihiko Ukegawa Pisa U S. Uozumi S. Vallecorsa Tsukuba U N. Van Remortel Geneva U A. Varganov Helsinki I.n.s.t. Of Phys E. Vataga Michigan U Elsa Fabiola Vazquez Valencia New Mexico U G. Velev Florida U C. Vellidis Fermilab Gregory Francisco Veramendi Pisa U Viktor Veszpremi Illinois U Urbana Miguel Vidal Purdue U R. Vidal Ciemat Madrid Ivan Vila Fermilab Rocio Vilar T. Vine Cantabria U Santander M. Vogel University C.o.l.l. London I. Vollrath New Mexico U I. Volobouev Mcgill U G. Volpi Berkeley Lbl Frank K. Wuerthwein Pisa U P. Wagner Uc San Diego Robert G. Wagner Texas A. M R. L. Wagner Argonne J. Wagner Fermilab Wolfgang Wagner R. Wallny Karlsruhe U Ekp S. M. Wang Ucla Andreas T. Warburton Taiwan I.n.s.t. Phys David Waters Mcgill U M. Weinberger University C.o.l.l. London William Carl Wester Iii Texas A. M B. Whitehouse Fermilab Daniel O. Whiteson Tufts U Arthur Barry Wicklund Pennsylvania U Eric J. Wicklund Argonne G. Williams Fermilab H. H. Williams Mcgill U P. Wilson Pennsylvania U B. L. Winer Fermilab Peter Wittich Ohio State U Stephen A. Wolbers Carl E. Wolfe Fermilab T. Wright Chicago U Efi X. Wu Michigan U Sara Madge Violette Wynne Geneva U A. Yagil Liverpool U K. Yamamoto Uc San Diego J. Yamaoka Osaka City U T. Yamashita Rutgers U Piscataway C. Yang Okayama U Un Ki Yang Yale U Y. C. Yang Chicago U Efi W. M. Yao Kyungpook N.a.t.l. U Gong Ping Yeh Berkeley Lbl J. Yoh Kohei Yorita Fermilab T. Yoshida Chicago U Efi Geum Bong Yu Osaka City U I. Yu Rochester U Shin Shan Yu Kyungpook N.a.t.l. U Jae Chul Yun Lucia Zanello Fermilab Anna Maria Zanetti Rome U I. Zaw Udine Infn X. Zhang Harvard U J. Zhou Illinois U Urbana S. Zucchelli Rutgers U Piscataway Benedetto Di Ruzza

subject

Particle physics Physics Multidisciplinary Hadron Gaussian distribution Mass measurement General Physics and Astronomy ddc:500.2 .Lambda baryon 01 natural sciences High Energy Physics - Experiment Xi baryon Particle decay 0103 physical sciences [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Measurement theory Nuclear Experiment 010306 general physics Probability Physics Muon 010308 nuclear & particles physics Physics Hyperon Background fluctuation Baryon Crystallography 14.20.Mr 13.30.Eg 13.60.Rj High Energy Physics::Experiment Nucleon

description

We report the observation and measurement of the mass of the bottom, strange baryon $\Xi^-_b$ through the decay chain $\Xi^-_b \to J/\psi \Xi^-$, where $J/\psi \to \mu^+ \mu^-$, $\Xi^- \to \Lambda \pi^-$, and $\Lambda \to p \pi^-$. Evidence for observation is based on a signal whose probability of arising from the estimated background is 6.6 x 10^{-15}, or 7.7 Gaussian standard deviations. The $\Xi^-_b$ mass is measured to be $5792.9\pm 2.5$ (stat.) $\pm 1.7$ (syst.) MeV/$c^2$.

year	journal	country	edition	language
2007-07-04	Physical Review Letters

https://doi.org/10.1103/physrevlett.99.052002