Measurement of the total cross section from elastic scattering in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector

M. Aaboud Z. Barnovska 1 N. Berger 1 M. Delmastro 1 L. Di Ciaccio 1 S. Elles 1 K. Grevtsov 1 T. Hryn’ova 1 S. Jézéquel 1 I. Koletsou 1 R. Lafaye 1 J. Levêque 1 P. Mastrandea 1 G. Sauvage 1 E. Sauvan 1 O. Simard 1 T. Todorov 1 I. Wingerter-Seez 1 E. Yatsenko 1 D. Boumediene 2 E. Busato 2 D. Calvet 2 S. Calvet 2 A.R. Chomont 2 J. Donini 2 Ph. Gris 2 R. Madar 2 D. Pallin 2 S.M. Romano Saez 2 C. Santoni 2 D. Simon 2 F. Vazeille 2 S. Albrand 3 S. Berlendis 3 A. Bethani 3 C. Camincher 3 J. Collot 3 S. Crépé-Renaudin 3 P.A. Delsart 3 C. Gabaldon 3 M.H. Genest 3 P.O.J. Gradin 3 J.Y. Hostachy 3 F. Ledroit-Guillon 3 A. Lleres 3 A. Lucotte 3 F. Malek 3 E. Petit 3 J. Stark 3 B. Trocmé 3 M. Wu 3 G. Rahal 4 G. Aad 5 M. Alstaty 5 M. Barbero 5 A. Calandri 5 T.P. Calvet 5 Y. Coadou 5 C. Diaconu 5 F. Djama 5 V. Ellajosyula 5 L. Feligioni 5 A. Hadef 5 G.D. Hallewell 5 F. Hubaut 5 S.J. Kahn 5 E. B. F. G. Knoops 5 E. Le Guirriec 5 J. Liu 5 K. Liu 5 D. Madaffari 5 E. Monnier 5 S. Muanza 5 E. Nagy 5 P. Pralavorio 5 Y. Rodina 5 A. Rozanov 5 M. Talby 5 T. Theveneaux-Pelzer 5 R.E. Ticse Torres 5 S. Tisserant 5 J. Toth 5 F. Touchard 5 L. Vacavant 5 Chen Wang 5
Abstract : A measurement of the total $pp$ cross section at the LHC at $\sqrt{s}=8$ TeV is presented. An integrated luminosity of $500$ $\mu$b$^{-1}$ was accumulated in a special run with high-$\beta^{\star}$ beam optics to measure the differential elastic cross section as a function of the Mandelstam momentum transfer variable $t$. The measurement is performed with the ALFA sub-detector of ATLAS. Using a fit to the differential elastic cross section in the $-t$ range from $0.014$ GeV$^2$ to $0.1$ GeV$^2$ to extrapolate $t\rightarrow 0$, the total cross section, $\sigma_{\mathrm{tot}}(pp\rightarrow X)$, is measured via the optical theorem to be: $\sigma_{\mathrm{tot}}(pp\rightarrow X) = {96.07} \; \pm 0.18 \; ({{stat.}}) \pm 0.85 \; ({{exp.}}) \pm 0.31 \; ({extr.}) \; {mb} \;,$ where the first error is statistical, the second accounts for all experimental systematic uncertainties and the last is related to uncertainties in the extrapolation $t\rightarrow 0$. In addition, the slope of the exponential function describing the elastic cross section at small $t$ is determined to be $B = 19.74 \pm 0.05 \; ({{stat.}}) \pm 0.23 \; ({{syst.}}) \; {GeV}^{-2}$.
Type de document :
Article dans une revue
Physics Letters B, Elsevier, 2016, 761, pp.158-178. 〈10.1016/j.physletb.2016.08.020〉
Liste complète des métadonnées

http://hal.in2p3.fr/in2p3-01348535
Contributeur : Claudine Bombar <>
Soumis le : lundi 25 juillet 2016 - 10:22:04
Dernière modification le : mardi 24 juillet 2018 - 15:46:14

Lien texte intégral

Identifiants

Citation

M. Aaboud, Z. Barnovska, N. Berger, M. Delmastro, L. Di Ciaccio, et al.. Measurement of the total cross section from elastic scattering in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector. Physics Letters B, Elsevier, 2016, 761, pp.158-178. 〈10.1016/j.physletb.2016.08.020〉. 〈in2p3-01348535〉

Partager

Métriques

Consultations de la notice

110