Observation of a new χ(b) state in radiative transitions to Υ(1S) and Υ(2S) at ATLAS.

نویسندگان

G Aad

B Abbott

J Abdallah

A A Abdelalim

A Abdesselam

O Abdinov

B Abi

M Abolins

O S AbouZeid

H Abramowicz

H Abreu

E Acerbi

B S Acharya

L Adamczyk

D L Adams

T N Addy

J Adelman

M Aderholz

S Adomeit

P Adragna

T Adye

S Aefsky

J A Aguilar-Saavedra

M Aharrouche

S P Ahlen

F Ahles

A Ahmad

M Ahsan

G Aielli

T Akdogan

T P A Åkesson

G Akimoto

A V Akimov

A Akiyama

M S Alam

M A Alam

J Albert

S Albrand

M Aleksa

I N Aleksandrov

F Alessandria

C Alexa

G Alexander

G Alexandre

T Alexopoulos

M Alhroob

M Aliev

G Alimonti

J Alison

M Aliyev

B M M Allbrooke

P P Allport

S E Allwood-Spiers

J Almond

A Aloisio

R Alon

A Alonso

B Alvarez Gonzalez

M G Alviggi

K Amako

P Amaral

C Amelung

V V Ammosov

A Amorim

G Amorós

N Amram

C Anastopoulos

L S Ancu

N Andari

T Andeen

C F Anders

G Anders

K J Anderson

A Andreazza

V Andrei

M-L Andrieux

X S Anduaga

A Angerami

F Anghinolfi

A Anisenkov

N Anjos

A Annovi

A Antonaki

M Antonelli

A Antonov

J Antos

F Anulli

S Aoun

L Aperio Bella

R Apolle

G Arabidze

I Aracena

Y Arai

A T H Arce

S Arfaoui

J-F Arguin

E Arik

M Arik

A J Armbruster

O Arnaez

C Arnault

A Artamonov

G Artoni

D Arutinov

S Asai

R Asfandiyarov

S Ask

B Åsman

L Asquith

K Assamagan

A Astbury

A Astvatsatourov

B Aubert

E Auge

K Augsten

M Aurousseau

G Avolio

R Avramidou

D Axen

C Ay

G Azuelos

Y Azuma

M A Baak

G Baccaglioni

C Bacci

A M Bach

H Bachacou

K Bachas

M Backes

M Backhaus

E Badescu

P Bagnaia

S Bahinipati

Y Bai

D C Bailey

T Bain

J T Baines

O K Baker

M D Baker

S Baker

E Banas

P Banerjee

Sw Banerjee

D Banfi

A Bangert

V Bansal

H S Bansil

L Barak

S P Baranov

A Barashkou

A Barbaro Galtieri

T Barber

E L Barberio

D Barberis

M Barbero

D Y Bardin

T Barillari

M Barisonzi

T Barklow

N Barlow

B M Barnett

R M Barnett

A Baroncelli

G Barone

A J Barr

F Barreiro

J Barreiro Guimarães da Costa

P Barrillon

R Bartoldus

A E Barton

V Bartsch

R L Bates

L Batkova

J R Batley

A Battaglia

M Battistin

F Bauer

H S Bawa

S Beale

T Beau

P H Beauchemin

R Beccherle

P Bechtle

H P Beck

S Becker

M Beckingham

K H Becks

A J Beddall

A Beddall

S Bedikian

V A Bednyakov

C P Bee

M Begel

S Behar Harpaz

P K Behera

M Beimforde

C Belanger-Champagne

P J Bell

W H Bell

G Bella

L Bellagamba

F Bellina

M Bellomo

A Belloni

O Beloborodova

K Belotskiy

O Beltramello

S Ben Ami

O Benary

D Benchekroun

C Benchouk

M Bendel

N Benekos

Y Benhammou

E Benhar Noccioli

J A Benitez Garcia

D P Benjamin

M Benoit

J R Bensinger

K Benslama

S Bentvelsen

D Berge

E Bergeaas Kuutmann

N Berger

F Berghaus

E Berglund

J Beringer

P Bernat

R Bernhard

C Bernius

T Berry

C Bertella

A Bertin

F Bertinelli

F Bertolucci

M I Besana

N Besson

S Bethke

W Bhimji

R M Bianchi

M Bianco

O Biebel

S P Bieniek

K Bierwagen

J Biesiada

M Biglietti

H Bilokon

M Bindi

S Binet

A Bingul

C Bini

C Biscarat

U Bitenc

K M Black

R E Blair

J-B Blanchard

G Blanchot

T Blazek

C Blocker

J Blocki

A Blondel

W Blum

U Blumenschein

G J Bobbink

V B Bobrovnikov

S S Bocchetta

A Bocci

C R Boddy

M Boehler

J Boek

N Boelaert

J A Bogaerts

A Bogdanchikov

A Bogouch

C Bohm

V Boisvert

T Bold

V Boldea

N M Bolnet

M Bona

V G Bondarenko

M Bondioli

M Boonekamp

C N Booth

S Bordoni

C Borer

A Borisov

G Borissov

I Borjanovic

M Borri

S Borroni

V Bortolotto

K Bos

D Boscherini

M Bosman

H Boterenbrood

D Botterill

J Bouchami

J Boudreau

E V Bouhova-Thacker

D Boumediene

C Bourdarios

N Bousson

A Boveia

J Boyd

I R Boyko

N I Bozhko

I Bozovic-Jelisavcic

J Bracinik

A Braem

P Branchini

G W Brandenburg

A Brandt

G Brandt

O Brandt

U Bratzler

B Brau

J E Brau

H M Braun

B Brelier

J Bremer

R Brenner

S Bressler

D Britton

F M Brochu

I Brock

R Brock

T J Brodbeck

E Brodet

F Broggi

C Bromberg

J Bronner

G Brooijmans

W K Brooks

G Brown

H Brown

P A Bruckman de Renstrom

D Bruncko

R Bruneliere

S Brunet

A Bruni

G Bruni

M Bruschi

T Buanes

Q Buat

F Bucci

J Buchanan

N J Buchanan

P Buchholz

R M Buckingham

A G Buckley

S I Buda

I A Budagov

B Budick

V Büscher

L Bugge

O Bulekov

M Bunse

T Buran

H Burckhart

S Burdin

T Burgess

S Burke

E Busato

P Bussey

C P Buszello

F Butin

B Butler

J M Butler

C M Buttar

J M Butterworth

W Buttinger

S Cabrera Urbán

D Caforio

O Cakir

P Calafiura

G Calderini

P Calfayan

R Calkins

L P Caloba

R Caloi

D Calvet

S Calvet

R Camacho Toro

P Camarri

M Cambiaghi

D Cameron

L M Caminada

S Campana

M Campanelli

V Canale

F Canelli

A Canepa

J Cantero

L Capasso

M D M Capeans Garrido

I Caprini

M Caprini

D Capriotti

M Capua

R Caputo

C Caramarcu

R Cardarelli

T Carli

G Carlino

L Carminati

B Caron

S Caron

G D Carrillo Montoya

A A Carter

J R Carter

J Carvalho

D Casadei

M P Casado

M Cascella

C Caso

A M Castaneda Hernandez

E Castaneda-Miranda

V Castillo Gimenez

N F Castro

G Cataldi

F Cataneo

A Catinaccio

J R Catmore

A Cattai

G Cattani

S Caughron

D Cauz

P Cavalleri

D Cavalli

M Cavalli-Sforza

V Cavasinni

F Ceradini

A S Cerqueira

A Cerri

L Cerrito

F Cerutti

S A Cetin

F Cevenini

A Chafaq

D Chakraborty

K Chan

B Chapleau

J D Chapman

J W Chapman

E Chareyre

D G Charlton

V Chavda

C A Chavez Barajas

S Cheatham

S Chekanov

S V Chekulaev

G A Chelkov

M A Chelstowska

C Chen

H Chen

S Chen

T Chen

X Chen

S Cheng

A Cheplakov

V F Chepurnov

R Cherkaoui El Moursli

V Chernyatin

E Cheu

S L Cheung

L Chevalier

G Chiefari

L Chikovani

J T Childers

A Chilingarov

G Chiodini

A S Chisholm

M V Chizhov

G Choudalakis

S Chouridou

I A Christidi

A Christov

D Chromek-Burckhart

M L Chu

J Chudoba

G Ciapetti

K Ciba

A K Ciftci

R Ciftci

D Cinca

V Cindro

M D Ciobotaru

C Ciocca

A Ciocio

M Cirilli

M Citterio

M Ciubancan

A Clark

P J Clark

W Cleland

J C Clemens

B Clement

C Clement

R W Clifft

چکیده

The χ(b)(nP) quarkonium states are produced in proton-proton collisions at the Large Hadron Collider at sqrt[s] = 7 TeV and recorded by the ATLAS detector. Using a data sample corresponding to an integrated luminosity of 4.4 fb(-1), these states are reconstructed through their radiative decays to Υ(1S,2S) with Υ → μ+ μ-. In addition to the mass peaks corresponding to the decay modes χ(b)(1P,2P) → Υ(1S)γ, a new structure centered at a mass of 10.530 ± 0.005(stat) ± 0.009(syst) GeV is also observed, in both the Υ(1S)γ and Υ(2S)γ decay modes. This structure is interpreted as the χ(b)(3P) system.

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