Authors:Gaoqing Cao; Lianyi He Xu-Guang Huang First page: 051001 Abstract: Analogous to the quarkyonic matter at high baryon density in which the quark Fermi seas and the
baryonic excitations coexist, it is argued that a “quarksonic matter” phase appears at high isospin
density where the quark (antiquark) Fermi seas and the mesonic excitations coexist. We explore this
phase in detail in both large N c and asymptotically free limits. In the large N c limit, we sketch
a phase diagram for the quarksonic matter. In the asymptotically free limit, we study the pion
superfluidity and thermodynamics of the quarksonic matter by using both perturbative calculations
and an effective model. Citation: Chinese Physics C PubDate: 2017-05-08T23:00:00Z Issue No:Vol. 41, No. 5 (2017)

Authors:Jie Zhao; Liang-Jian Wen, Yi-Fang Wang Jun Cao First page: 053001 Abstract: In the past few decades, numerous searches have been made for the neutrinoless double-beta decay (0
ν ββ) process, aiming to establish whether neutrinos are their own antiparticles (Majorana
neutrinos), but no 0 ν ββ decay signal has yet been observed. A number of new experiments are
proposed but they ultimately suffer from a common problem: the sensitivity may not increase
indefinitely with the target mass. We have performed a detailed analysis of the physics potential by
using the Jiangmen Underground Neutrino Observatory (JUNO) to improve the sensitivity to 0 ν ββ up
to a few meV, a major step forward with respect to the experiments currently being planned. JUNO is
a 20 kton low-background liquid scintillator (LS) detector with ##IMG##
[http://ej.iop.org/images/1674-1137/41/5/053001/cpc20170502ieqn1.gif] energy resolution, now under
construction. It is feasible to build a balloon filled with enriched xenon gas (with 136 Xe up ... Citation: Chinese Physics C PubDate: 2017-05-08T23:00:00Z Issue No:Vol. 41, No. 5 (2017)

Authors:B. Sazdović First page: 053101 Abstract: We introduce the 2 D dimensional double space with the coordinates Z M = ( x μ , y μ ), whose
components are the coordinates of initial space x μ and its T-dual y μ . We shall show that in this
extended space the T-duality transformations can be realized simply by exchanging the places of some
coordinates x a , along which we want to perform T-duality, and the corresponding dual coordinates y
a . In such an approach it is evident that T-duality leads to the physically equivalent theory and
that a complete set of T-duality transformations forms a subgroup of the 2 D permutation group. So,
in double space we are able to represent the backgrounds of all T-dual theories in a unified manner. Citation: Chinese Physics C PubDate: 2017-05-08T23:00:00Z Issue No:Vol. 41, No. 5 (2017)

Authors:Chao Wang; Yujiang Bi, Hao Cai, Ying Chen, Ming Gong Zhaofeng Liu First page: 053102 Abstract: From the overlap lattice quark propagator calculated in the Landau gauge, we determine the quark
chiral condensate by fitting operator product expansion formulas to the lattice data. The quark
propagators are computed on domain wall fermion configurations generated by the RBC-UKQCD
Collaborations with N f = 2+1 flavors. Three ensembles with different light sea quark masses are
used at one lattice spacing 1/ a = 1.75(4) GeV. We obtain ##IMG##
[http://ej.iop.org/images/1674-1137/41/5/053102/cpc20170504ieqn1.gif] in the SU (2) chiral limit. Citation: Chinese Physics C PubDate: 2017-05-08T23:00:00Z Issue No:Vol. 41, No. 5 (2017)

Authors:Rong Wang; Xu-Rong Chen First page: 053103 Abstract: Determination of proton parton distribution functions is presented under the dynamical parton model
assumption by applying DGLAP equations with GLR-MQ-ZRS corrections. We provide two data sets,
referred to as IMParton16, which are from two different nonperturbative inputs. One is the naive
input of three valence quarks and the other is the input of three valence quarks with
flavor-asymmetric sea components. Basically, both data sets are compatible with the experimental
measurements at high scale ( Q 2 > 2 GeV 2 ). Furthermore, our analysis shows that the input with
flavor-asymmetric sea components better reproduces the structure functions at high Q 2 . Generally,
the parton distribution functions obtained, especially the gluon distribution function, are good
options for inputs to simulations of high energy scattering processes. The analysis is performed
under the fixed-flavor number scheme for n f = 3, 4, 5. Both da... Citation: Chinese Physics C PubDate: 2017-05-08T23:00:00Z Issue No:Vol. 41, No. 5 (2017)

Authors:Cai-Dian Lü; Faisal Munir Qin Qin First page: 053106 Abstract: The extremely small branching ratio of the b → ssd̄ decay in the Standard Model makes it a suitable
channel to explore new-physics signals. We study this Δ S = 2 process in Randall-Sundrum models,
including the custodially protected and the bulk-Higgs Randall-Sundrum models. Exploring the
experimentally favored parameter spaces of these models suggests a possible enhancement of the decay
rate, compared to the Standard Model result, by at most two orders of magnitude. Citation: Chinese Physics C PubDate: 2017-05-08T23:00:00Z Issue No:Vol. 41, No. 5 (2017)

Authors:Jian Liu; Jinjuan Zhang, Chang Xu Zhongzhou Ren First page: 054101 Abstract: In this paper, the nuclear longitudinal form factors are systematically studied from the intrinsic
charge multipoles. For axially deformed nuclei, two different types of density profiles are used to
describe their charge distributions. For the same charge distributions expanded with different basis
functions, the corresponding longitudinal form factors are derived and compared with each other.
Results show the multipoles C λ of longitudinal form factors are independent of the basis functions
of charge distributions. Further numerical calculations of longitudinal form factors of 12 C
indicates that the C 0 multipole reflects the contributions of spherical components of all
nonorthogonal basis functions. For deformed nuclei, their charge RMS radii can also be determined
accurately by the C 0 measurement. The studies in this paper examine the model-independent
properties of electron scattering, which are useful for int... Citation: Chinese Physics C PubDate: 2017-05-08T23:00:00Z Issue No:Vol. 41, No. 5 (2017)

Authors:Amit Bindra; H. M. Mittal First page: 054102 Abstract: A systematic dependence of shape fluctuation energy product SFE * B (E2) ↑ and rotational energy
product ROTE * B (E2) ↑ on the valence nucleon product N p N n is carried out in the Z = 50 − 82, N
= 82 − 126 major shell space. For the shape transitional nuclei, the product SFE * B (E2) ↑ drops to
zero and becomes negative, indicating direct dependence on N p N n . A relative rise, on the other
hand, is observed in the product ROTE * B (E2) ↑ plotted against N p N n for all the nuclei in Z =
50 − 82 and N = 82 − 126. In the N > 104 region, large positive values of the product SFE * B (E2)↑
are observed for the Pt nucleus, which indicates sphericity. A systematic study of the product SFE *
B (E2) ↑ and ROTE * B (E2) ↑ with atomic number Z is al... Citation: Chinese Physics C PubDate: 2017-05-08T23:00:00Z Issue No:Vol. 41, No. 5 (2017)

Authors:Da-Li Zhang; Hong Lu, Huan-Yu Wang, Xin-Qiao Li, Yan-Bing Xu, Zheng-Hua An, Xiao-xia Yu, Hui Wang, Feng Shi, Ping Wang Xiao-Yun Zhao First page: 056101 Abstract: The silicon-strip tracker of the China Seismo-Electromagnetic Satellite (CSES) consists of two
double-sided silicon strip detectors (DSSDs) which provide incident particle tracking information. A
low-noise analog ASIC VA140 was used in this study for DSSD signal readout. A beam test on the DSSD
module was performed at the Beijing Test Beam Facility of the Beijing Electron Positron Collider
(BEPC) using a 400–800 MeV/ c proton beam. The pedestal analysis results, RMSE noise, gain
correction, and intensity distribution of incident particles of the DSSD module are presented. Citation: Chinese Physics C PubDate: 2017-05-08T23:00:00Z Issue No:Vol. 41, No. 5 (2017)

Authors:Xin Xia; Teng Li, Xing-Tao Huang Xue-Yao Zhang First page: 056202 Abstract: A fast physics analysis framework has been developed based on SNiPER to process the increasingly
large data sample collected by BESIII. In this framework, a reconstructed event data model with
SmartRef is designed to improve the speed of Input/Output operations, and necessary physics analysis
tools are migrated from BOSS to SNiPER. A real physics analysis e + e − → π + π − J/ψ is used to
test the new framework, and achieves a factor of 10.3 improvement in Input/Output speed compared to
BOSS. Further tests show that the improvement is mainly attributed to the new reconstructed event
data model and the lazy-loading functionality provided by SmartRef. Citation: Chinese Physics C PubDate: 2017-05-08T23:00:00Z Issue No:Vol. 41, No. 5 (2017)