Evidence for non-exponential elastic proton-proton differential cross-section at low |t| and SQUARE ROOTs=8 TeV by TOTEM

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23220%2F15%3A43929194" target="_blank" >RIV/49777513:23220/15:43929194 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S0550321315002953" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0550321315002953</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.nuclphysb.2015.08.010" target="_blank" >10.1016/j.nuclphysb.2015.08.010</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Evidence for non-exponential elastic proton-proton differential cross-section at low |t| and SQUARE ROOTs=8 TeV by TOTEM

Popis výsledku v původním jazyce

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 ?*=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 ?. 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.

Název v anglickém jazyce

Evidence for non-exponential elastic proton-proton differential cross-section at low |t| and SQUARE ROOTs=8 TeV by TOTEM

Popis výsledku anglicky

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 ?*=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 ?. 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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

—

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Nuclear Physics B

ISSN

0550-3213

e-ISSN

—

Svazek periodika

2015

Číslo periodika v rámci svazku

899

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

20

Strana od-do

527-546

Kód UT WoS článku

000362604100027

EID výsledku v databázi Scopus

2-s2.0-84940177060