Author
Listed:
- T. Cai
(University of Rochester
York University)
- M. L. Moore
(University of Rochester
Stanford University)
- A. Olivier
(University of Rochester)
- S. Akhter
(AMU Campus)
- Z. Ahmad Dar
(AMU Campus
Department of Physics, William & Mary)
- V. Ansari
(AMU Campus)
- M. V. Ascencio
(Sección Física, Departamento de Ciencias, Pontificia Universidad Católica del Perú
Iowa State University)
- A. Bashyal
(Oregon State University
High Energy Physics/Center for Computational Excellence Department, Argonne National Laboratory)
- A. Bercellie
(University of Rochester)
- M. Betancourt
(Fermi National Accelerator Laboratory)
- A. Bodek
(University of Rochester)
- J. L. Bonilla
(Universidad de Guanajuato)
- A. Bravar
(University of Geneva)
- H. Budd
(University of Rochester)
- G. Caceres
(Centro Brasileiro de Pesquisas Físicas
University of California at Davis)
- M. F. Carneiro
(Oregon State University
Centro Brasileiro de Pesquisas Físicas
Brookhaven National Laboratory)
- G. A. Díaz
(University of Rochester)
- H. Motta
(Centro Brasileiro de Pesquisas Físicas)
- J. Felix
(Universidad de Guanajuato)
- L. Fields
(University of Notre Dame)
- A. Filkins
(Department of Physics, William & Mary)
- R. Fine
(University of Rochester
Los Alamos National Laboratory)
- A. M. Gago
(Sección Física, Departamento de Ciencias, Pontificia Universidad Católica del Perú)
- H. Gallagher
(Tufts University)
- S. M. Gilligan
(Oregon State University)
- R. Gran
(University of Minnesota – Duluth)
- E. Granados
(Universidad de Guanajuato)
- D. A. Harris
(York University
Fermi National Accelerator Laboratory)
- S. Henry
(University of Rochester)
- D. Jena
(Fermi National Accelerator Laboratory)
- S. Jena
(IISER Mohali)
- J. Kleykamp
(University of Rochester
University of Mississippi)
- A. Klustová
(Imperial College London)
- M. Kordosky
(Department of Physics, William & Mary)
- D. Last
(University of Pennsylvania)
- T. Le
(Tufts University)
- A. Lozano
(Centro Brasileiro de Pesquisas Físicas)
- X.-G. Lu
(University of Warwick
University of Oxford)
- E. Maher
(Massachusetts College of Liberal Arts)
- S. Manly
(University of Rochester)
- W. A. Mann
(Tufts University)
- C. Mauger
(University of Pennsylvania)
- K. S. McFarland
(University of Rochester)
- B. Messerly
(University of Pittsburgh
University of Minnesota)
- J. Miller
(Universidad Técnica Federico Santa María)
- O. Moreno
(Department of Physics, William & Mary
Universidad de Guanajuato)
- J. G. Morfín
(Fermi National Accelerator Laboratory)
- D. Naples
(University of Pittsburgh)
- J. K. Nelson
(Department of Physics, William & Mary)
- C. Nguyen
(University of Florida)
- V. Paolone
(University of Pittsburgh)
- G. N. Perdue
(University of Rochester
Fermi National Accelerator Laboratory)
- K.-J. Plows
(University of Oxford)
- M. A. Ramírez
(Universidad de Guanajuato
University of Pennsylvania)
- R. D. Ransome
(Rutgers, The State University of New Jersey)
- H. Ray
(University of Florida)
- D. Ruterbories
(University of Rochester)
- H. Schellman
(Oregon State University)
- C. J. Solano Salinas
(Universidad Nacional de Ingeniería)
- H. Su
(University of Pittsburgh)
- M. Sultana
(University of Rochester)
- V. S. Syrotenko
(Tufts University)
- E. Valencia
(Department of Physics, William & Mary
Universidad de Guanajuato)
- N. H. Vaughan
(Oregon State University)
- A. V. Waldron
(Imperial College London
Queen Mary University of London)
- M. O. Wascko
(Imperial College London)
- C. Wret
(University of Rochester)
- B. Yaeggy
(Universidad Técnica Federico Santa María
University of Cincinnati)
- L. Zazueta
(Department of Physics, William & Mary)
Abstract
Scattering of high energy particles from nucleons probes their structure, as was done in the experiments that established the non-zero size of the proton using electron beams1. The use of charged leptons as scattering probes enables measuring the distribution of electric charges, which is encoded in the vector form factors of the nucleon2. Scattering weakly interacting neutrinos gives the opportunity to measure both vector and axial vector form factors of the nucleon, providing an additional, complementary probe of their structure. The nucleon transition axial form factor, FA, can be measured from neutrino scattering from free nucleons, νμn → μ−p and $${\bar{\nu }}_{\mu }p\to {\mu }^{+}n$$ ν ¯ μ p → μ + n , as a function of the negative four-momentum transfer squared (Q2). Up to now, FA(Q2) has been extracted from the bound nucleons in neutrino–deuterium scattering3–9, which requires uncertain nuclear corrections10. Here we report the first high-statistics measurement, to our knowledge, of the $${\bar{\nu }}_{\mu }\,p\to {\mu }^{+}n$$ ν ¯ μ p → μ + n cross-section from the hydrogen atom, using the plastic scintillator target of the MINERvA11 experiment, extracting FA from free proton targets and measuring the nucleon axial charge radius, rA, to be 0.73 ± 0.17 fm. The antineutrino–hydrogen scattering presented here can access the axial form factor without the need for nuclear theory corrections, and enables direct comparisons with the increasingly precise lattice quantum chromodynamics computations12–15. Finally, the tools developed for this analysis and the result presented are substantial advancements in our capabilities to understand the nucleon structure in the weak sector, and also help the current and future neutrino oscillation experiments16–20 to better constrain neutrino interaction models.
Suggested Citation
T. Cai & M. L. Moore & A. Olivier & S. Akhter & Z. Ahmad Dar & V. Ansari & M. V. Ascencio & A. Bashyal & A. Bercellie & M. Betancourt & A. Bodek & J. L. Bonilla & A. Bravar & H. Budd & G. Caceres & M., 2023.
"Measurement of the axial vector form factor from antineutrino–proton scattering,"
Nature, Nature, vol. 614(7946), pages 48-53, February.
Handle:
RePEc:nat:nature:v:614:y:2023:i:7946:d:10.1038_s41586-022-05478-3
DOI: 10.1038/s41586-022-05478-3
Download full text from publisher
As the access to this document is restricted, you may want to search for a different version of it.
Corrections
All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:nature:v:614:y:2023:i:7946:d:10.1038_s41586-022-05478-3. See general information about how to correct material in RePEc.
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
We have no bibliographic references for this item. You can help adding them by using this form .
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .
Please note that corrections may take a couple of weeks to filter through
the various RePEc services.