Study of the isospin symmetry breaking in the light quark sea of the nucleon from the Drell-Yan process

A. Baldit; C. Barrière; J. Castor; T. Chambon; A. Devaux; B. Espagnon; J. Fargeix; P. Force; G. Landaud; P. Saturnini; F. Vazeille; P. Sonderegger; M. C. Abreu; P. Bordalo; R. Ferreira; C. Lourenço; S. Ramos; S. Silva; J. Varela; C. Gerschel; D. Jouan; X. Tarrago; B. Chaurand; L. Kluberg; A. Romana; P. Gorodetzky; D. Lazic; R. Mazini; C. Racca; B. Alessandro; E. Chiavassa; G. Dellacasa; M. Gallio; P. Giubellino; P. Guaita; A. Marzari-Chiesa; M. Masera; M. Monteno; A. Musso; L. Ramello; L. Riccati; E. Scomparin; E. Vercellin; M. Bedjidian; D. Contardo; E. Descroix; O. Drapier; J. Y. Grossiord; A. Guichard; R. Haroutunian; F. Malek; R. Mandry; J. R. Pizzi

doi:10.1016/0370-2693(94)90884-2

Study of the isospin symmetry breaking in the light quark sea of the nucleon from the Drell-Yan process

A. Baldit
, C. Barrière
, J. Castor
, T. Chambon
, A. Devaux
, B. Espagnon
, J. Fargeix
, P. Force
, G. Landaud
, P. Saturnini
, F. Vazeille
, P. Sonderegger
, M. C. Abreu
, P. Bordalo
, R. Ferreira
, C. Lourenço
, S. Ramos
, S. Silva
, J. Varela
, C. Gerschel

D. Jouan, X. Tarrago, B. Chaurand, L. Kluberg, A. Romana, P. Gorodetzky, D. Lazic, R. Mazini, C. Racca, B. Alessandro, E. Chiavassa, G. Dellacasa, M. Gallio, P. Giubellino, P. Guaita, A. Marzari-Chiesa, M. Masera, M. Monteno, A. Musso, L. Ramello, L. Riccati, E. Scomparin, E. Vercellin, M. Bedjidian, D. Contardo, E. Descroix, O. Drapier, J. Y. Grossiord, A. Guichard, R. Haroutunian, F. Malek, R. Mandry, J. R. Pizzi

Research output: Contribution to journal › Article › peer-review

Abstract

The ratio of cross-sections for muon pair production through the Drell-Yan process in p - p and p - d reactions has been measured at y ≈ 0, with 450 GeVc incident protons. The asymmetry A_DY = δ^pp - δ^pn δ^pp+δ^pn amounts to -0.09 ± 0.02 ± 0.025. The ratio u d of the nucleon sea structure functions derived from this measurement amounts to 0.51 ± 0.04 ± 0.05 at x = 0.18 and suggests that isospin symmetry is broken in the light quark sea of the nucleon.

Original language	English
Pages (from-to)	244-250
Number of pages	7
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	332
Issue number	1-2
DOIs	https://doi.org/10.1016/0370-2693(94)90884-2
Publication status	Published - 14 Jul 1994
Externally published	Yes

Access to Document

10.1016/0370-2693(94)90884-2

Cite this

Baldit, A., Barrière, C., Castor, J., Chambon, T., Devaux, A., Espagnon, B., Fargeix, J., Force, P., Landaud, G., Saturnini, P., Vazeille, F., Sonderegger, P., Abreu, M. C., Bordalo, P., Ferreira, R., Lourenço, C., Ramos, S., Silva, S., Varela, J., ... Pizzi, J. R. (1994). Study of the isospin symmetry breaking in the light quark sea of the nucleon from the Drell-Yan process. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 332(1-2), 244-250. https://doi.org/10.1016/0370-2693(94)90884-2

@article{e8fde230eb714df8991549cda7e77c44,

title = "Study of the isospin symmetry breaking in the light quark sea of the nucleon from the Drell-Yan process",

abstract = "The ratio of cross-sections for muon pair production through the Drell-Yan process in p - p and p - d reactions has been measured at y ≈ 0, with 450 GeVc incident protons. The asymmetry ADY = δpp - δpn δpp+δpn amounts to -0.09 ± 0.02 ± 0.025. The ratio u d of the nucleon sea structure functions derived from this measurement amounts to 0.51 ± 0.04 ± 0.05 at x = 0.18 and suggests that isospin symmetry is broken in the light quark sea of the nucleon.",

author = "A. Baldit and C. Barri{\`e}re and J. Castor and T. Chambon and A. Devaux and B. Espagnon and J. Fargeix and P. Force and G. Landaud and P. Saturnini and F. Vazeille and P. Sonderegger and Abreu, \{M. C.\} and P. Bordalo and R. Ferreira and C. Louren{\c c}o and S. Ramos and S. Silva and J. Varela and C. Gerschel and D. Jouan and X. Tarrago and B. Chaurand and L. Kluberg and A. Romana and P. Gorodetzky and D. Lazic and R. Mazini and C. Racca and B. Alessandro and E. Chiavassa and G. Dellacasa and M. Gallio and P. Giubellino and P. Guaita and A. Marzari-Chiesa and M. Masera and M. Monteno and A. Musso and L. Ramello and L. Riccati and E. Scomparin and E. Vercellin and M. Bedjidian and D. Contardo and E. Descroix and O. Drapier and Grossiord, \{J. Y.\} and A. Guichard and R. Haroutunian and F. Malek and R. Mandry and Pizzi, \{J. R.\}",

year = "1994",

month = jul,

day = "14",

doi = "10.1016/0370-2693(94)90884-2",

language = "English",

volume = "332",

pages = "244--250",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier BV",

number = "1-2",

}

Baldit, A, Barrière, C, Castor, J, Chambon, T, Devaux, A, Espagnon, B, Fargeix, J, Force, P, Landaud, G, Saturnini, P, Vazeille, F, Sonderegger, P, Abreu, MC, Bordalo, P, Ferreira, R, Lourenço, C, Ramos, S, Silva, S, Varela, J, Gerschel, C, Jouan, D, Tarrago, X, Chaurand, B, Kluberg, L, Romana, A, Gorodetzky, P, Lazic, D, Mazini, R, Racca, C, Alessandro, B, Chiavassa, E, Dellacasa, G, Gallio, M, Giubellino, P, Guaita, P, Marzari-Chiesa, A, Masera, M, Monteno, M, Musso, A, Ramello, L, Riccati, L, Scomparin, E, Vercellin, E, Bedjidian, M, Contardo, D, Descroix, E, Drapier, O, Grossiord, JY, Guichard, A, Haroutunian, R, Malek, F, Mandry, R & Pizzi, JR 1994, 'Study of the isospin symmetry breaking in the light quark sea of the nucleon from the Drell-Yan process', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 332, no. 1-2, pp. 244-250. https://doi.org/10.1016/0370-2693(94)90884-2

TY - JOUR

T1 - Study of the isospin symmetry breaking in the light quark sea of the nucleon from the Drell-Yan process

AU - Baldit, A.

AU - Barrière, C.

AU - Castor, J.

AU - Chambon, T.

AU - Devaux, A.

AU - Espagnon, B.

AU - Fargeix, J.

AU - Force, P.

AU - Landaud, G.

AU - Saturnini, P.

AU - Vazeille, F.

AU - Sonderegger, P.

AU - Abreu, M. C.

AU - Bordalo, P.

AU - Ferreira, R.

AU - Lourenço, C.

AU - Ramos, S.

AU - Silva, S.

AU - Varela, J.

AU - Gerschel, C.

AU - Jouan, D.

AU - Tarrago, X.

AU - Chaurand, B.

AU - Kluberg, L.

AU - Romana, A.

AU - Gorodetzky, P.

AU - Lazic, D.

AU - Mazini, R.

AU - Racca, C.

AU - Alessandro, B.

AU - Chiavassa, E.

AU - Dellacasa, G.

AU - Gallio, M.

AU - Giubellino, P.

AU - Guaita, P.

AU - Marzari-Chiesa, A.

AU - Masera, M.

AU - Monteno, M.

AU - Musso, A.

AU - Ramello, L.

AU - Riccati, L.

AU - Scomparin, E.

AU - Vercellin, E.

AU - Bedjidian, M.

AU - Contardo, D.

AU - Descroix, E.

AU - Drapier, O.

AU - Grossiord, J. Y.

AU - Guichard, A.

AU - Haroutunian, R.

AU - Malek, F.

AU - Mandry, R.

AU - Pizzi, J. R.

PY - 1994/7/14

Y1 - 1994/7/14

N2 - The ratio of cross-sections for muon pair production through the Drell-Yan process in p - p and p - d reactions has been measured at y ≈ 0, with 450 GeVc incident protons. The asymmetry ADY = δpp - δpn δpp+δpn amounts to -0.09 ± 0.02 ± 0.025. The ratio u d of the nucleon sea structure functions derived from this measurement amounts to 0.51 ± 0.04 ± 0.05 at x = 0.18 and suggests that isospin symmetry is broken in the light quark sea of the nucleon.

AB - The ratio of cross-sections for muon pair production through the Drell-Yan process in p - p and p - d reactions has been measured at y ≈ 0, with 450 GeVc incident protons. The asymmetry ADY = δpp - δpn δpp+δpn amounts to -0.09 ± 0.02 ± 0.025. The ratio u d of the nucleon sea structure functions derived from this measurement amounts to 0.51 ± 0.04 ± 0.05 at x = 0.18 and suggests that isospin symmetry is broken in the light quark sea of the nucleon.

UR - https://www.scopus.com/pages/publications/0041361449

U2 - 10.1016/0370-2693(94)90884-2

DO - 10.1016/0370-2693(94)90884-2

M3 - Article

SN - 0370-2693

VL - 332

SP - 244

EP - 250

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-2

ER -

Study of the isospin symmetry breaking in the light quark sea of the nucleon from the Drell-Yan process

Abstract

Access to Document

Other files and links

Fingerprint

Cite this