Evidence for non-exponential elastic proton proton differential cross-section at low vertical bar t vertical bar and root s=8 TeV by TOTEM

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F15%3A00234984" target="_blank" >RIV/68407700:21220/15:00234984 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21220/15:00312558

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.nuclphysb.2015.08.010" target="_blank" >http://dx.doi.org/10.1016/j.nuclphysb.2015.08.010</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 vertical bar t vertical bar and root s=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 root s = 8 TeV based on a high-statistics data sample obtained with the beta* = 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 < vertical bar t vertical bar < 0.2 GeV2 with a significance greater than 7 sigma. 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 vertical bar t vertical bar and root s=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 root s = 8 TeV based on a high-statistics data sample obtained with the beta* = 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 < vertical bar t vertical bar < 0.2 GeV2 with a significance greater than 7 sigma. 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

BF - Elementární částice a fyzika vysokých energií

OECD FORD obor

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Projekt

<a href="/cs/project/LG13031" target="_blank" >LG13031: Spolupráce ČR s CERN</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

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

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Svazek periodika

899

Číslo periodika v rámci svazku

OCTOBER

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

20

Strana od-do

527-546

Kód UT WoS článku

000362604100027

EID výsledku v databázi Scopus

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