Abstract
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Austrian Federal Ministry of Science, Research and Economy
Austrian Science Fund
Belgian Fonds de la Recherche Scientifique
Fonds voor Wetenschappelijk Onderzoek
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Bulgarian Ministry of Education and Science
CERN
Chinese Academy of Sciences, Ministry of Science and Technology
National Natural Science Foundation of China
Colombian Funding Agency (COLCIENCIAS)
Croatian Ministry of Science, Education and Sport
Croatian Science Foundation
Research Promotion Foundation, Cyprus
Ministry of Education and Research
Estonian Research Council
European Regional Development Fund, Estonia
Academy of Finland
Finnish Ministry of Education and Culture
Helsinki Institute of Physics
Institut National de Physique Nucleaire et de Physique des Particules/CNRS
Commissariat a l'Energie Atomique et aux Energies Alternatives/CEA
Bundesministerium fur Bildung und Forschung
Deutsche Forschungsgemeinschaft
Helmholtz-Gemeinschaft Deutscher Forschungszentren, Germany
General Secretariat for Research and Technology, Greece
National Scientific Research Foundation
National Innovation Office; Hungary
Department of Atomic Energy and the Department of Science and Technology. India
Institute for Studies in Theoretical Physics and Mathematics, Iran
Science Foundation, Ireland
Istituto Nazionale di Fisica Nucleate, Italy
Ministry of Science. ICT and Future Planning
National Research Foundation (NRF), Republic of Korea
Lithuanian Academy of Sciences
Ministry'of Education, and University of Malaya (Malaysia)
CINVESTAV
CONACYT
SEP
UASLP-FAI
Ministry of Business; Innovation and Employment, New Zealand
Pakistan Atomic Energy Commission
Ministry of Science and Higher Education
National Science Centre, Poland
Fundacao para a Ciencia e a Tecnologia, Portugal
JINR, Dubna
Ministry of Education and Science of the Russian Federation
Federal Agency of Atomic Energy of the Russian Federation
Russian Academy of Sciences
Russian Foundation for Basic Research
Ministry'of Education, Science and Technological Development of Serbia
Secretaria de Estado de Investigacion, Desarrollo e Innovacion and Programa Consolider-Ingenio 2010, Spain
ETH Board
ETH Zurich
PSI
SNF
UniZH
Canton Zurich
SER
Ministry of Science and Technology, Taipei
Thailand Center of Excellence in Physics
Institute for the Promotion of Teaching Science and Technology of Thailand
Special Task Force for Activating Research
National Science and Technology Development Agency of Thailand
Scientific and Technical Research Council of Turkey
Turkish Atomic Energy Authority
National Academy of Sciences of Ukraine
State Fund for Fundamental Researches, Ukraine
Science and Technology Facilities Council, UK
US Department of Energy
US National Science Foundation
Marie-Curie program
European Research Council
EPLANET (European Union)
Leventis Foundation
A. P. Sloan Foundation
Alexander von Humboldt Foundation
Belgian Federal Science Policy Office
Fonds pour la Formation a la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium)
Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium)
Ministry of Education. Youth and Sports (MEYS) of the Czech Republic
Council of Science and Industrial Research, India
HOMING PLUS program of the Foundation for Polish Science
European Union, Regional Development Fund
Compagnia di San Paolo (Torino)
Consorzio per la Fisica (Trieste)
MIUR (Italy)
Thalis and Aristeia programs
EU-ESF
Greek NSRF
National Priorities Research Program by Qatar National Research Fund
Measurements of diffractive dissociation cross sections in pp collisions at root s = 7 TeV are presented in kinematic regions defined by the masses M-X and M-Y of the two final-state hadronic systems separated by the largest rapidity gap in the event. Differential cross sections are measured as a function of xi= M-X(2)/s in the region -5.5 < log(10)xi 10(X) < -2.5, for logio M-Y < 0.5, dominated by single dissociation (SD), and 0.5 < log(10)M(Y) < 1.1, dominated by double dissociation (DD), where M-x and M-y are given in GeV. The inclusive pp cross section is also measured as a function of the width of the central pseudorapidity gap Delta eta for Delta eta > 3, logio M-X > 1.1, and logioMy > 1.1, a region dominated by DD. The cross sections integrated over these regions are found to be, respectively, 2.99 0.02(staf)12392(sysf) mb, 1.18 +/- 0.02(stat) +/- 0.13(syst) mh, and 0.58 +/- 0.01(stat)(-0.11)(+0.13) (syst) mh, and are used to extract extrapolated total SD and DD cross sections. In addition, the inclusive differential cross section, d sigma/d Delta eta(F), for events with a pseudorapidity gap adjacent to the edge of the detector, is measured over Delta eta F = 8.4 units of pseudorapidity. The results are compared to those of other experiments and to theoretical predictions and found compatible with slowly 'rising diffractive cross sections as a function of center-of-mass energy.
Yerevan Phys Inst, Yerevan 375036, Armenia
OeAW, Inst Hochenergiephys, Vienna, Austria
Natl Ctr Particle &High Energy Phys, Minsk, Byelarus
Univ Antwerp, B-2020 Antwerp, Belgium
Vrije Univ Brussel, Brussels, Belgium
Univ Libre Bruxelles, Brussels, Belgium
Univ Ghent, B-9000 Ghent, Belgium
Catholic Univ Louvain, Louvain La Neuve, Belgium
Univ Mons, B-7000 Mons, Belgium
Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil
Univ Estado Rio de Janeiro, BR-20550011 Rio De Janeiro, Brazil
Univ Estadual Paulista, Sao Paulo, Brazil
Univ Fed ABC, Sao Paulo, Brazil
Bulgarian Acad Sci, Inst Nucl Res &Nucl Energy, Sofia, Bulgaria
Univ Sofia, BU-1126 Sofia, Bulgaria
Inst High Energy Phys, Beijing 100039, Peoples R China
Peking Univ, State Key Lab Nucl Phys &Technol, Beijing 100871, Peoples R China
Univ Los Andes, Bogota, Colombia
Univ Split, Fac Elect Engn Mech Engn &Naval Architecture, Split, Croatia
Univ Split, Fac Sci, Split, Croatia
Rudjer Boskovic Inst, Zagreb, Croatia
Univ Cyprus, Nicosia, Cyprus
Charles Univ Prague, Prague, Czech Republic
Acad Sci Res &Technol Arab Republ Egypt, Egyptian Network High Energy Phys, Cairo, Egypt
NICPB, Tallinn, Estonia
Univ Helsinki, Dept Phys, Helsinki, Finland
Helsinki Inst Phys, Helsinki, Finland
Lappeenrunta Univ Technol, Lappeenranta, Finland
CEA Saclay, DSM IRFU, F-91191 Gif Sur Yvette, France
Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France
Univ Haute Alsace Mulhouse, Univ Strasbourg, Inst Pluridisciplinaire Hubert Curien, CNRS,IN2P3, Strasbourg, France
CNRS, Inst Natl Phys Nucl &Phys Particles, IN2P3, Ctr Calcul, Villeurbanne, France
Univ Lyon 1, Univ Lyon, CNRS, IN2P3,Inst Phys Nucl Lyon, F-69622 Villeurbanne, France
Tbilisi State Univ, Inst High Energy Phys &Informatiz, GE-380086 Tbilisi, Rep of Georgia
Rhein Westfal TH Aachen, Inst Phys 1, Aachen, Germany
Rhein Westfal TH Aachen, Inst Phys 3 A, Aachen, Germany
Rhein Westfal TH Aachen, Inst Phys 3 B, Aachen, Germany
DESY, Hamburg, Germany
Univ Hamburg, Hamburg, Germany
Univ Karlsruhe, Inst Expt Kernphys, Karlsruhe, Germany
NCSR Demokritos, INPP, Aghia Paraskevi, Greece
Univ Athens, Athens, Greece
Univ Ioannina, GR-45110 Ioannina, Greece
Wigner Res Ctr Phys, Budapest, Hungary
ATOMKI, Inst Nucl Res, Debrecen, Hungary
Univ Debrecen, Debrecen, Hungary
Natl Inst Sci Educ &Res, Bhubaneswar, Orissa, India
Panjab Univ, Chandigarh 160014, India
Univ Delhi, Delhi 110007, India
Saha Inst Nucl Phys, Kolkata, India
Bhabha Atom Res Ctr, Bombay 400085, Maharashtra, India
Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India
Inst Res Fundamental Sci IPM, Tehran, Iran
Univ Coll Dublin, Dublin 2, Ireland
Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy
Univ Bari, Bari, Italy
Politecn Bari, Bari, Italy
Ist Nazl Fis Nucl, Sez Bologna, I-40126 Bologna, Italy
Univ Bologna, Bologna, Italy
Ist Nazl Fis Nucl, Sez Catania, I-95129 Catania, Italy
Univ Catania, Catania, Italy
CSFNSM, Catania, Italy
Ist Nazl Fis Nucl, Sez Firenze, I-50125 Florence, Italy
Univ Florence, Florence, Italy
Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy
Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy
Univ Genoa, Genoa, Italy
Ist Nazl Fis Nucl, Sez Milano Bicocca, I-20133 Milan, Italy
Univ Milano Bicocca, Milan, Italy
Ist Nazl Fis Nucl, Sez Napoli, Rome, Italy
Univ Naples Federico II, Rome, Italy
Univ Basilicata, Rome, Italy
Univ G Marconi, Rome, Italy
Ist Nazl Fis Nucl, Sez Padova, I-38050 Trento, Italy
Univ Padua, Trento, Italy
Univ Trent, Trento, Italy
Ist Nazl Fis Nucl, Sez Pavia, I-27100 Pavia, Italy
Univ Pavia, I-27100 Pavia, Italy
Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy
Univ Perugia, I-06100 Perugia, Italy
Ist Nazl Fis Nucl, Sez Pisa, Pisa, Italy
Univ Pisa, Pisa, Italy
Scuola Normale Super Pisa, Pisa, Italy
Ist Nazl Fis Nucl, Sez Roma, Rome, Italy
Univ Rome, Rome, Italy
Ist Nazl Fis Nucl, Sez Torino, Novara, Italy
Univ Turin, Novara, Italy
Univ Piemonte Orientale, Novara, Italy
Ist Nazl Fis Nucl, Sez Trieste, Trieste, Italy
Univ Trieste, Trieste, Italy
Kangwon Natl Univ, Chunchon, South Korea
Kvungpook Natl Univ, Daegu, South Korea
Chonbuk Natl Univ, Jeonju, South Korea
Chonnam Natl Univ, Inst Universe &Elementary Particles, Kwangju, South Korea
Korea Univ, Seoul, South Korea
Univ Seoul, Seoul, South Korea
Sungkyunkwan Univ, Suwon, South Korea
Vilnius State Univ, Vilnius, Lithuania
Univ Malaya, Natl Ctr Particle Phys, Kuala Lumpur, Malaysia
IPN, Ctr Invest &Estudios Avanzados, Mexico City 07738, DF, Mexico
Univ Iberoamer, Mexico City, DF, Mexico
Benemerita Univ Autonoma Puebla, Puebla, Mexico
Univ Auton