content_image/344677.jpg content_image/344684.jpg content_image/344685.jpg content_image/344686.jpg content_image/344687.jpg content_image/344682.jpg
over the whole x − y plane [24] 

The transverse angular momentum components are given by 

<img src='content_image/344677.jpg'>

<img src='content_image/344684.jpg'>

<img src='content_image/344685.jpg'>

<img src='content_image/344686.jpg'>

<img src='content_image/344687.jpg'>

In the z = 0 plane, we have J [M] x /P [M] z = 〈 y 〉 [M] and J [M] y /P [M] z = −〈 x 〉 $^{[M]}$. Thus, the transverse angular momentum can be obtained by measuring the position of wavepacket centroid [10]. In order to reveal the rotation characteristics, it is necessary for us to know the transverse angular momentum in any cross section. We first consider the model [W], the transverse angular momenta are given by 

<img src='content_image/344682.jpg'>

