Nuclear Physics B (Oct 2015)
Evidence for non-exponential elastic proton–proton differential cross-section at low |t| and s=8TeV by TOTEM
- G. Antchev,
- P. Aspell,
- I. Atanassov,
- V. Avati,
- J. Baechler,
- V. Berardi,
- M. Berretti,
- E. Bossini,
- U. Bottigli,
- M. Bozzo,
- P. Broulím,
- A. Buzzo,
- F.S. Cafagna,
- C.E. Campanella,
- M.G. Catanesi,
- M. Csanád,
- T. Csörgő,
- M. Deile,
- F. De Leonardis,
- A. D'Orazio,
- M. Doubek,
- K. Eggert,
- V. Eremin,
- F. Ferro,
- A. Fiergolski,
- F. Garcia,
- V. Georgiev,
- S. Giani,
- L. Grzanka,
- C. Guaragnella,
- J. Hammerbauer,
- J. Heino,
- A. Karev,
- J. Kašpar,
- J. Kopal,
- V. Kundrát,
- S. Lami,
- G. Latino,
- R. Lauhakangas,
- R. Linhart,
- E. Lippmaa,
- J. Lippmaa,
- M.V. Lokajíček,
- L. Losurdo,
- M. Lo Vetere,
- F. Lucas Rodríguez,
- M. Macrí,
- A. Mercadante,
- N. Minafra,
- S. Minutoli,
- T. Naaranoja,
- F. Nemes,
- H. Niewiadomski,
- E. Oliveri,
- F. Oljemark,
- R. Orava,
- M. Oriunno,
- K. Österberg,
- P. Palazzi,
- L. Paločko,
- V. Passaro,
- Z. Peroutka,
- V. Petruzzelli,
- T. Politi,
- J. Procházka,
- F. Prudenzano,
- M. Quinto,
- E. Radermacher,
- E. Radicioni,
- F. Ravotti,
- E. Robutti,
- L. Ropelewski,
- G. Ruggiero,
- H. Saarikko,
- A. Scribano,
- J. Smajek,
- W. Snoeys,
- T. Sodzawiczny,
- J. Sziklai,
- C. Taylor,
- N. Turini,
- V. Vacek,
- J. Welti,
- P. Wyszkowski,
- K. Zielinski
Affiliations
- G. Antchev
- P. Aspell
- CERN, Geneva, Switzerland
- I. Atanassov
- V. Avati
- AGH University of Science and Technology, Krakow, Poland
- J. Baechler
- CERN, Geneva, Switzerland
- V. Berardi
- Dipartimento Interateneo di Fisica di Bari, Bari, Italy
- M. Berretti
- CERN, Geneva, Switzerland
- E. Bossini
- Università degli Studi di Siena and Gruppo Collegato INFN di Siena, Siena, Italy
- U. Bottigli
- Università degli Studi di Siena and Gruppo Collegato INFN di Siena, Siena, Italy
- M. Bozzo
- INFN Sezione di Genova, Genova, Italy
- P. Broulím
- University of West Bohemia, Pilsen, Czech Republic
- A. Buzzo
- INFN Sezione di Genova, Genova, Italy
- F.S. Cafagna
- INFN Sezione di Bari, Bari, Italy
- C.E. Campanella
- Dipartimento di Ingegneria Elettrica e dell'Informazione – Politecnico di Bari, Bari, Italy
- M.G. Catanesi
- INFN Sezione di Bari, Bari, Italy
- M. Csanád
- Wigner Research Centre for Physics, RMKI, Budapest, Hungary
- T. Csörgő
- Wigner Research Centre for Physics, RMKI, Budapest, Hungary
- M. Deile
- CERN, Geneva, Switzerland
- F. De Leonardis
- Dipartimento di Ingegneria Elettrica e dell'Informazione – Politecnico di Bari, Bari, Italy
- A. D'Orazio
- Dipartimento di Ingegneria Elettrica e dell'Informazione – Politecnico di Bari, Bari, Italy
- M. Doubek
- Czech Technical University, Praha, Czech Republic
- K. Eggert
- Case Western Reserve University, Dept. of Physics, Cleveland, OH, USA
- V. Eremin
- F. Ferro
- INFN Sezione di Genova, Genova, Italy
- A. Fiergolski
- INFN Sezione di Bari, Bari, Italy
- F. Garcia
- Helsinki Institute of Physics, Helsinki, Finland
- V. Georgiev
- University of West Bohemia, Pilsen, Czech Republic
- S. Giani
- CERN, Geneva, Switzerland
- L. Grzanka
- AGH University of Science and Technology, Krakow, Poland
- C. Guaragnella
- Dipartimento di Ingegneria Elettrica e dell'Informazione – Politecnico di Bari, Bari, Italy
- J. Hammerbauer
- University of West Bohemia, Pilsen, Czech Republic
- J. Heino
- Helsinki Institute of Physics, Helsinki, Finland
- A. Karev
- CERN, Geneva, Switzerland
- J. Kašpar
- Institute of Physics of the Academy of Sciences of the Czech Republic, Praha, Czech Republic
- J. Kopal
- Institute of Physics of the Academy of Sciences of the Czech Republic, Praha, Czech Republic
- V. Kundrát
- Institute of Physics of the Academy of Sciences of the Czech Republic, Praha, Czech Republic
- S. Lami
- INFN Sezione di Pisa, Pisa, Italy
- G. Latino
- Università degli Studi di Siena and Gruppo Collegato INFN di Siena, Siena, Italy
- R. Lauhakangas
- Helsinki Institute of Physics, Helsinki, Finland
- R. Linhart
- University of West Bohemia, Pilsen, Czech Republic
- E. Lippmaa
- National Institute of Chemical Physics and Biophysics NICPB, Tallinn, Estonia
- J. Lippmaa
- National Institute of Chemical Physics and Biophysics NICPB, Tallinn, Estonia
- M.V. Lokajíček
- Institute of Physics of the Academy of Sciences of the Czech Republic, Praha, Czech Republic
- L. Losurdo
- Università degli Studi di Siena and Gruppo Collegato INFN di Siena, Siena, Italy
- M. Lo Vetere
- Università degli Studi di Genova, Italy
- F. Lucas Rodríguez
- CERN, Geneva, Switzerland
- M. Macrí
- INFN Sezione di Genova, Genova, Italy
- A. Mercadante
- INFN Sezione di Bari, Bari, Italy
- N. Minafra
- CERN, Geneva, Switzerland
- S. Minutoli
- INFN Sezione di Genova, Genova, Italy
- T. Naaranoja
- Helsinki Institute of Physics, Helsinki, Finland
- F. Nemes
- Wigner Research Centre for Physics, RMKI, Budapest, Hungary
- H. Niewiadomski
- Case Western Reserve University, Dept. of Physics, Cleveland, OH, USA
- E. Oliveri
- CERN, Geneva, Switzerland
- F. Oljemark
- Helsinki Institute of Physics, Helsinki, Finland
- R. Orava
- Helsinki Institute of Physics, Helsinki, Finland
- M. Oriunno
- K. Österberg
- Helsinki Institute of Physics, Helsinki, Finland
- P. Palazzi
- CERN, Geneva, Switzerland
- L. Paločko
- University of West Bohemia, Pilsen, Czech Republic
- V. Passaro
- Dipartimento di Ingegneria Elettrica e dell'Informazione – Politecnico di Bari, Bari, Italy
- Z. Peroutka
- University of West Bohemia, Pilsen, Czech Republic
- V. Petruzzelli
- Dipartimento di Ingegneria Elettrica e dell'Informazione – Politecnico di Bari, Bari, Italy
- T. Politi
- Dipartimento di Ingegneria Elettrica e dell'Informazione – Politecnico di Bari, Bari, Italy
- J. Procházka
- Institute of Physics of the Academy of Sciences of the Czech Republic, Praha, Czech Republic
- F. Prudenzano
- Dipartimento di Ingegneria Elettrica e dell'Informazione – Politecnico di Bari, Bari, Italy
- M. Quinto
- INFN Sezione di Bari, Bari, Italy
- E. Radermacher
- CERN, Geneva, Switzerland
- E. Radicioni
- INFN Sezione di Bari, Bari, Italy
- F. Ravotti
- CERN, Geneva, Switzerland
- E. Robutti
- INFN Sezione di Genova, Genova, Italy
- L. Ropelewski
- CERN, Geneva, Switzerland
- G. Ruggiero
- CERN, Geneva, Switzerland
- H. Saarikko
- Helsinki Institute of Physics, Helsinki, Finland
- A. Scribano
- INFN Sezione di Pisa, Pisa, Italy
- J. Smajek
- CERN, Geneva, Switzerland
- W. Snoeys
- CERN, Geneva, Switzerland
- T. Sodzawiczny
- CERN, Geneva, Switzerland
- J. Sziklai
- Wigner Research Centre for Physics, RMKI, Budapest, Hungary
- C. Taylor
- Case Western Reserve University, Dept. of Physics, Cleveland, OH, USA
- N. Turini
- Università degli Studi di Siena and Gruppo Collegato INFN di Siena, Siena, Italy
- V. Vacek
- Czech Technical University, Praha, Czech Republic
- J. Welti
- Helsinki Institute of Physics, Helsinki, Finland
- P. Wyszkowski
- AGH University of Science and Technology, Krakow, Poland
- K. Zielinski
- AGH University of Science and Technology, Krakow, Poland
- DOI
- https://doi.org/10.1016/j.nuclphysb.2015.08.010
- Journal volume & issue
-
Vol. 899,
no. C
pp. 527 – 546
Abstract
The TOTEM experiment has made a precise measurement of the elastic proton–proton differential cross-section at the centre-of-mass energy s=8 TeV based on a high-statistics data sample obtained with the β⁎=90 m optics. Both the statistical and systematic uncertainties remain below 1%, except for the t-independent contribution from the overall normalisation. This unprecedented precision allows to exclude a purely exponential differential cross-section in the range of four-momentum transfer squared 0.027<|t|<0.2 GeV2 with a significance greater than 7 σ. Two extended parametrisations, with quadratic and cubic polynomials in the exponent, are shown to be well compatible with the data. Using them for the differential cross-section extrapolation to t=0, and further applying the optical theorem, yields total cross-section estimates of (101.5±2.1) mb and (101.9±2.1) mb, respectively, in agreement with previous TOTEM measurements.
