在π0衰变中搜索暗光子资源-CSDN文库

Open

Access

139 浏览量 2020-04-23 10:47:11 上传评论收藏 488KB PDF 举报

资源推荐

资源详情

资源评论

Physics Letters B 746 (2015) 178–185

Contents lists available at ScienceDirect

Physics Letters B

www.elsevier.com/locate/physletb

Search for the dark photon in π

decays

NA48/2 Collaboration

J.R. Batley,

G. Kalmus, C. Lazzeroni

2,3

, D.J. Munday, M.W. Slater

, S.A. Wotton

Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK

R. Arcidiacono

, G. Bocquet, N. Cabibbo

, A. Ceccucci, D. Cundy

, V. Falaleev, M. Fidecaro,

L. Gatignon, A. Gonidec, W. Kubischta, A. Norton

, A. Maier, M. Patel

, A. Peters

CERN, CH-1211 Genève 23, Switzerland

S. Balev

, P.L. Frabetti, E. Gersabeck

, E. Goudzovski

∗,2,3,10

, P. Hristov

, V. Kekelidze,

V. Kozhuharov

12,13

, L. Litov

, D. Madigozhin, N. Molokanova, I. Polenkevich,

Yu. Potrebenikov, S. Stoynev

, A. Zinchenko

Joint Institute for Nuclear Research, 141980 Dubna (MO), Russia

E. Monnier

, E. Swallow, R. Winston

The Enrico Fermi Institute, The University of Chicago, Chicago, IL 60126, USA

P. Rubin

, A. Walker

Department of Physics and Astronomy, University of Edinburgh, Edinburgh, EH9 3JZ, UK

W. Baldini, A. Cotta Ramusino, P. Dalpiaz, C. Damiani, M. Fiorini, A. Gianoli, M. Martini,

F. Petrucci, M. Savrié, M. Scarpa, H. Wahl

Dipartimento di Fisica e Scienze della Terra dell’Università e Sezione dell’INFN di Ferrara, I-44122 Ferrara, Italy

A. Bizzeti

, M. Lenti, M. Veltri

Sezione dell’INFN di Firenze, I-50019 Sesto Fiorentino, Italy

M. Calvetti, E. Celeghini, E. Iacopini, G. Ruggiero

Dipartimento di Fisica dell’Università e Sezione dell’INFN di Firenze, I-50019 Sesto Fiorentino, Italy

M. Behler, K. Eppard, K. Kleinknecht, P. Marouelli, L. Masetti, U. Moosbrugger,

C. Morales Morales

, B. Renk, M. Wache, R. Wanke, A. Winhart

Institut für Physik, Universität Mainz, D-55099 Mainz, Germany

D. Coward

, A. Dabrowski

, T. Fonseca Martin, M. Shieh, M. Szleper, M. Velasco,

M.D. Wood

Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208, USA

http://dx.doi.org/10.1016/j.physletb.2015.04.068

0370-2693/

SCOAP

NA48/2 Collaboration / Physics Letters B 746 (2015) 178–185 179

P. Cenci, M. Pepe, M.C. Petrucci

Sezione dell’INFN di Perugia, I-06100 Perugia, Italy

G. Anzivino, E. Imbergamo, A. Nappi

, M. Piccini, M. Raggi

, M. Valdata-Nappi

Dipartimento di Fisica dell’Università e Sezione dell’INFN di Perugia, I-06100 Perugia, Italy

C. Cerri, R. Fantechi

Sezione dell’INFN di Pisa, I-56100 Pisa, Italy

G. Collazuol

, L. DiLella, G. Lamanna

, I. Mannelli, A. Michetti

Scuola Normale Superiore e Sezione dell’INFN di Pisa, I-56100 Pisa, Italy

F. Costantini, N. Doble, L. Fiorini

, S. Giudici, G. Pierazzini

, M. Sozzi, S. Venditti

Dipartimento di Fisica dell’Università e Sezione dell’INFN di Pisa, I-56100 Pisa, Italy

B. Bloch-Devaux

, C. Cheshkov

, J.B. Chèze, M. De Beer, J. Derré, G. Marel, E. Mazzucato,

B. Peyaud, B. Vallage

DSM/IRFU – CEA Saclay, F-91191 Gif-sur-Yvette, France

M. Holder, M. Ziolkowski

Fachbereich Physik, Universität Siegen, D-57068 Siegen, Germany

C. Biino, N. Cartiglia, F. Marchetto

Sezione dell’INFN di Torino, I-10125 Torino, Italy

S. Bifani

, M. Clemencic

, S. Goy Lopez

Dipartimento di Fisica dell’Università e Sezione dell’INFN di Torino, I-10125 Torino, Italy

H. Dibon, M. Jeitler, M. Markytan, I. Mikulec, G. Neuhofer, L. Widhalm

Österreichische Akademie der Wissenschaften, Institut für Hochenergiephysik, A-10560 Wien, Austria

a r t i c l e i n f o a b s t r a c t

Article history:

Received

3 April 2015

Received

in revised form 29 April 2015

Accepted

30 April 2015

Available

online 5 May 2015

Editor:

W.-D. Schlatter

A sample of 1.69 × 10

fully reconstructed π

→ γ e

−

decay candidates collected by the NA48/2

experiment at CERN in 2003–2004 is analyzed to search for the dark photon ( A



) production in the π

→

γ A



decay followed by the prompt A



→ e

−

decay. No signal is observed, and an exclusion region in

the plane of the dark photon mass m



and mixing parameter ε

is established. The obtained upper limits

on ε

are more stringent than the previous limits in the mass range 9MeV/c

< m



< 70 MeV/c

. The

NA48/2 sensitivity to the dark photon production in the K

→ π



decay is also evaluated.

(http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP

Corresponding author.

E-mail

address: eg@hep.ph.bham.ac.uk (E. Goudzovski).

Deceased.

Now at: School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT, UK.

Supported by a Royal Society University Research Fellowship (UF100308, UF0758946).

Funded by the UK Particle Physics and Astronomy Research Council, grant PPA/G/O/1999/00559.

Now at: Università degli Studi del Piemonte Orientale e Sezione dell’INFN di Torino, I-10125 Torino, Italy.

Now at: Istituto di Cosmogeoﬁsica del CNR di Torino, I-10133 Torino, Italy.

Now at: Dipartimento di Fisica e Scienze della Terra dell’Università e Sezione dell’INFN di Ferrara, I-44122 Ferrara, Italy.

Now at: Department of Physics, Imperial College, London, SW7 2BW, UK.

Now at: Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, D-69120 Heidelberg, Germany.

Supported by ERC Starting Grant 336581.

Now at: CERN, CH-1211 Genève 23, Switzerland.

Now at: Faculty of Physics, University of Soﬁa “St. Kl. Ohridski”, 1164 Soﬁa, Bulgaria, funded by the Bulgarian National Science Fund under contract DID02-22.

剩余7页未读，继续阅读

评论收藏

内容反馈

weixin_38577200

粉丝: 9
资源: 907

在π0衰变中搜索暗光子

搜索π0衰变中不可见的暗光子的产生

在Hyperon衰变中寻找暗光子

在→衰变中搜索重中微子

D的衰变中极化光子和电子的角分布

搜索违反衰变的轻子数

希格斯再次衰变为两个光子

辐射D的光子极化在现象学上衰减

通过J /ψ辐射衰变研究伪标量子介子的双光子衰变

在BESIII处搜索稀有衰变η'→π0π0π0π0

在Belle实验中搜索B-→μ-ν¯μ衰变

波美隆的基态及其衰变为轻介子和光子

晶格QCD + QED中的光子轻子衰变速率

通过WASA-at-COSY搜索在衰变中的违规行为→

搜索B→Y（4260）K，Y（4260）→J /ψπ+ π−衰变

搜索抑制的衰变B +→K + K +π-和B +→π+π+ K-

稀有衰减π0→e + e-：超出超前阶的校正

在OKA实验中研究衰落$$ K ^ {+} \ rightarrow \ pi ^ {+} \ pi ^ {-} \ pi ^ {+} \ gamma $$ K +→π+π-π+γ

J /ψ→π+π-衰减中违反G奇偶性的幅度

搜索最终状态的衰变

在MAMI处测量衰减η′→π0π0η

搜索稀有衰变D→h（h（'））e + e−

J-PARC KOTO实验中（g − 2）μ和K L→π0 +（不可见）异常的轻轨玻色子解释

搜索稀有衰变Λc+→pμ+ μ−

J /ψ→ηπ0ϕ和π0π0ϕ中的三角形奇点

η'衰变的分支分数的精确测量

用罕见的衰变和CP违反kaon探测具有10 TeV终止质量的SUSY

如何将B d 0→J /ψπη，K K $$ {\ overline {B}} _ d ^ 0 \应用于J / \ psi \ left（\ uppi \ eta，\ overline {K} K \ 右）$$衰减以提取有关πη散射的信息

轻弱耦合的轴向力：模型，约束和投影

最新资源